solved errors

12 files changed, 2386 insertions, 133 deletions

diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch1-checkpoint.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch1-checkpoint.ipynb
new file mode 100755
index 00000000..a9c91080
--- /dev/null
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch1-checkpoint.ipynb
@@ -0,0 +1,261 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:2af50dca95bb8940069ca1eefad39c58f8f97bbf13a194cd9fff16b4f6521b4f"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter One : Naming"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.1 Page no : 2 \n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "strL = 0  # Not recommended\n",
+      "stringLength = 0 # Recommended"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "Example 2 Page no : 3\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcFruit:\n",
+      "    def print_(self):\n",
+      "        pass\n",
+      "\n",
+      "class EmcApple(EmcFruit):\n",
+      "    def print_(self):\n",
+      "        pass\n",
+      "\n",
+      "fp = EmcApple()\n",
+      "print fp "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "<__main__.EmcApple instance at 0x9d29c8c>\n"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.3 Page no : 4\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class Point:\n",
+      "    def __init__(self,a,b):\n",
+      "        self.x = a\n",
+      "        self.y = b\n",
+      "    def x1(self,a):\n",
+      "        self.x = a\n",
+      "\n",
+      "p = Point(0,0) # a point in a 2-dimensional space\n",
+      "p.x1(1); # set X-coordinate\n",
+      "print  p.x  # prints X-coordinate, \"1\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.4 page no : 4\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "def check_assign(a,i,t):\n",
+      "    if (i < len(a)):\n",
+      "        a[i] = t;"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.5 Page no : 6\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class String:\n",
+      "    pass\n",
+      "\n",
+      "class DynamicArray:\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.6 page no : 6\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "a = 'aaa' \n",
+      "s1 = 'xyz'\n",
+      "s = 'abc' # Emc::String s;\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.8 page no : 7\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#s1 = EmcString() # Belongs to the Emc Class Library\n",
+      "#s2 = OtherString() # Belongs to the Other Class Library"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.9 Page no : 8\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "#import RWCstring #include \"RWCstring.h\" /* Recommended */\n",
+      "#from rw import cstring #include \"rw/cstring.h\" /* Sometimes needed */"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 1.10 page no : 9\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "i__j = 11;\n",
+      "_K = 22;\n",
+      "_m = 33;\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch10-checkpoint.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch10-checkpoint.ipynb
new file mode 100755
index 00000000..6292c70e
--- /dev/null
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch10-checkpoint.ipynb
@@ -0,0 +1,490 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:70f9ab632bffbd9fecc3bdcee575cac266cb09d4df74fddec4e595d028f134df"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h1> Chapter Ten : Object-oriented programming </h1>"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>Example 10.1 page no :105"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "s = \"hello\"  # length() == 5\n",
+      "print s\n",
+      "print len(s)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "hello\n",
+        "5"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.2 page no : 106"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "s = \"Hello\"\n",
+      "\n",
+      "s = s.lower()\n",
+      "print s"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "hello"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3> example 10.3 page no :107"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcCollection:\n",
+      "   \n",
+      "    def insert(self,t):\n",
+      "        pass\n",
+      "    \n",
+      "    def operator(self, coll):\n",
+      "        pass\n",
+      "\n",
+      "class EmcArrayCollection(EmcCollection):\n",
+      "    initialSize = 10\n",
+      "\n",
+      "    def __init__(self,maxsize):\n",
+      "        pass\n",
+      "\n",
+      "\"\"\"\n",
+      "class InvalidCollectionType(EmcException):\n",
+      "    \n",
+      "    def __init__(self,i):\n",
+      "        pass\n",
+      "        \"\"\"\n",
+      "\n",
+      "class EmcCollectionFactory:\n",
+      "    def __init__(self):\n",
+      "        pass\n",
+      "\n",
+      "    def create(self,type):\n",
+      "        pass\n",
+      "\n",
+      "    def createArray(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>example 10.4 page no :109"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "class EmcCollectionFactory:\n",
+      "    def __init__(self):\n",
+      "        pass\n",
+      "\n",
+      "    def create(self,type):\n",
+      "        pass\n",
+      "\n",
+      "    def createArray(self):\n",
+      "        pass\n",
+      "\n",
+      "factory = EmcCollectionFactory()\n",
+      "collection = factory.create(\"Array\")\n",
+      "collection.insert(42); # EmcArrayCollection<int>::insert() is called\n",
+      "print collection"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "None\n"
+       ]
+      }
+     ],
+     "prompt_number": 32
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>example 10.5 page no : 111"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcCollection:\n",
+      "    def __del__(self):\n",
+      "        pass\n",
+      "\n",
+      "class EmcArrayCollection( EmcCollection):\n",
+      "    def __del__(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>example 10.6 page no :112"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcLogged:\n",
+      "    def writeClassName(self,o):\n",
+      "        pass\n",
+      "\n",
+      "    def writeValue(self,o):\n",
+      "        pass\n",
+      "\n",
+      "    def logMessage(self,message):\n",
+      "        pass\n",
+      "\n",
+      "    def __del__(self):\n",
+      "        pass\n",
+      "\n",
+      "class EmcLoggedCollection(EmcCollection):\n",
+      "\n",
+      "    def writeValue(self,o):\n",
+      "        pass\n",
+      "\n",
+      "    def __del__(self):\n",
+      "        pass        "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.7 Page no :  117"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "\n",
+      "class EmcIntStack:\n",
+      "    def empty(self):\n",
+      "        pass\n",
+      "\n",
+      "    def full(self):\n",
+      "        pass\n",
+      "        \n",
+      "    def top(self):\n",
+      "        pass\n",
+      "        \n",
+      "    def push(self,i):\n",
+      "        pass\n",
+      "    \n",
+      "    def pop(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.8 Page no : 117"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def makeString(stack):\n",
+      "    returnValue = ''\n",
+      "    copy = stack\n",
+      "    while (not copy.empty()):\n",
+      "        # loop condition makes precondition valid\n",
+      "        print copy.pop() # Precondition: ! copy.empty()\n",
+      "        returnValue += copy.pop\n",
+      "\n",
+      "    return returnValue;"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.9 page no : 118"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcString:\n",
+      "    def cStr(self):\n",
+      "        pass\n",
+      "        # cStr() returns 0-terminated string\n",
+      "\n",
+      "    def length(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.10 page no : 119"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcCollection:\n",
+      "    def __del__(self):\n",
+      "        pass\n",
+      "\n",
+      "    def insert(self,T):\n",
+      "        pass\n",
+      "\n",
+      "    def clear(self):\n",
+      "        pass\n",
+      "\n",
+      "    def remove(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.11 page no : 120"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class EmcCollectionFactory:\n",
+      "    def __init__(self):\n",
+      "        pass\n",
+      "\n",
+      "    def create(self,type):\n",
+      "        pass\n",
+      "\n",
+      "    def createArray(self):\n",
+      "        pass\n",
+      "    \n",
+      "factrory = EmcCollectionFactory()\n",
+      "collection = factory.create(\"Array\");\n",
+      "if (not collection.isFull()):\n",
+      "    collection.insert(42);"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 36
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.12 page no : 121"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "def insertObject(c,element):\n",
+      "  \n",
+      "    if (not c.isFull()):\n",
+      "        c.insert(element)\n",
+      "        return True\n",
+      "    return False"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 12
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.13 Page no :  121"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "def insert(T):\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 13
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.14 page no : 123"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcCollection:\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 14
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 10.15 page no : 124"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcCollection:\n",
+      "    def templateRequirements(self):\n",
+      "        pass\n",
+      "\n",
+      "    def templateRequirements(self):\n",
+      "       \n",
+      "        t1 = T1()\n",
+      "      \n",
+      "        t2 =t1\n",
+      "\n",
+      "        t2 = t1;\n",
+      "        # Assignable\n",
+      "        b = (t2 == t1); # EqualityComparable"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 15
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch12-checkpoint.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch12-checkpoint.ipynb
new file mode 100755
index 00000000..c8f2cfb1
--- /dev/null
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch12-checkpoint.ipynb
@@ -0,0 +1,355 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:3fda869111a137bc83ae4b79f3c57ac84f247031c3e08ac7d6dfb9bb168b3105"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h1>Chapter  Twelve : Error handling"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.1 page no : 135"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import socket\n",
+      "import sys\n",
+      "import os\n",
+      "sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM,0)\n",
+      "\n",
+      "if(sock < 0):\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.2 page no : 136"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcException:\n",
+      "    def operator(self,n):\n",
+      "        pass\n",
+      "\n",
+      "class EmcSystemException( EmcException):\n",
+      "    def __init__(self,m):\n",
+      "        pass\n",
+      "    \n",
+      "    def emcSocket(self,family,t,protocol):\n",
+      "        # create socket\n",
+      "        socketfd = socket(family, t, protocol);\n",
+      "        if (socketfd < 0): # check status value\n",
+      "            raise EmcSystemException(\"emcSocket\");\n",
+      "        return socketfd;"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.3 page no :  139"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def __init__(self,cp):\n",
+      "    self.lengthM = len(cp)\n",
+      "    self.cpM = cp"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 13
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.5 page no : 141"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcLog:\n",
+      "    def __init__(self,filename):\n",
+      "        pass\n",
+      "\n",
+      "    def message(self,EmcString):\n",
+      "        pass\n",
+      "\n",
+      "    def __del__(self):\n",
+      "        if uncaught_exception():\n",
+      "            self.flush()\n",
+      "            \n",
+      "    def flush(self):\n",
+      "        if ( not uncaught_exception()):\n",
+      "            raise EmcSystemException(\"EmcLog::flush()\")"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.6 page no : 142"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcException:\n",
+      "    def __init__(self,m):\n",
+      "        maxSizeM = 100\n",
+      "        actualLength = len(m);\n",
+      "        self.lengthM = min(maxSizeM,actualLength);\n",
+      "        self.messageM = message"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.7"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def f():\n",
+      "    ip = 1\n",
+      "    g(ip)\n",
+      "\n",
+      "\n",
+      "def g(i):\n",
+      "    raise Exception(i)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.8 page no :  146"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def f():\n",
+      "    ip = 1\n",
+      "    g(ip)\n",
+      "\n",
+      "def g(i):\n",
+      "    raise Exception(i)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.9 page no :146"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "def f():\n",
+      "    ip = 1\n",
+      "    g(ip)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.10 page no : 148"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcStack:\n",
+      "    defaultSizeM = 100\n",
+      "    def __init__(self,size = 100):\n",
+      "        pass\n",
+      "\n",
+      "    def __del__(self):\n",
+      "        pass\n",
+      "\n",
+      "    def operator(self,s):\n",
+      "        pass\n",
+      "\n",
+      "    def empty(self):\n",
+      "        pass\n",
+      "        \n",
+      "    def top(self):\n",
+      "        pass\n",
+      "\n",
+      "    def push(self,i):\n",
+      "        pass\n",
+      "    \n",
+      "    def pop(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.12 page no :  151"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcException:\n",
+      "    def __init__(self,m):\n",
+      "        pass\n",
+      "      \n",
+      "    def operator(self,o,EmcException):\n",
+      "        pass\n",
+      "\n",
+      "    def printOn(self,o):   \n",
+      "        print self.messageM;"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.13 page no : 153"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "try:\n",
+      "    socketfd = emcSocket(AF_UNIX, SOCK_STREAM, 0);\n",
+      "except Exception,e:\n",
+      "    print e"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "name 'emcSocket' is not defined"
+       ]
+      }
+     ],
+     "prompt_number": 11
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 12.14 page no :  155"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def at(s,pos):\n",
+      "    if (pos > len(s)):\n",
+      "        raise Exception;"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 12
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch13-checkpoint.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch13-checkpoint.ipynb
new file mode 100755
index 00000000..8bf2f3f0
--- /dev/null
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch13-checkpoint.ipynb
@@ -0,0 +1,350 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:121cbe714f8e854e8d9ce1fe8dcdc370535cc7140b2f83bdae09063602e644f9"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h1> Chapter Thirteen :  Parts of C++ to avoid"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.1 page no :  159"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "s = 'abc' #raw_input()\n",
+      "print s"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "abc"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.2 page no : 160"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class DangerousString:\n",
+      "    def __init__(self,cp):\n",
+      "        pass\n",
+      "    \n",
+      "    def char(self):\n",
+      "        pass\n",
+      "\n",
+      "hello = \"Hello World!\";\n",
+      "print hello # Works perfectly\n",
+      "print \"%s\"%hello"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Hello World!\n",
+        "Hello World!"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.3 page no : 160"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "class EmcString:\n",
+      "    def __init__(self,cp):\n",
+      "        pass\n",
+      "\n",
+      "\n",
+      "s = \"Hello World!\";\n",
+      "print s "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Hello World!"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.4  page no :161"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "SIZE = 1024;\n",
+      "print SIZE"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1024"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.5 page no : 162"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class X:\n",
+      "    class Color:\n",
+      "        green = 1\n",
+      "        yellow = 2\n",
+      "        red = 3"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.6 page no :  162"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class X:\n",
+      "    maxBuf = 1024\n",
+      "    class Color:\n",
+      "        green = 1\n",
+      "        yellow = 2\n",
+      "        red = 3"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.7 page no : 162"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "def SQUARE(x):\n",
+      "    return x*x\n",
+      "\n",
+      "i = SQUARE(3 + 4); \n",
+      "print i"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "49"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.8 page no :  163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "def square(x):\n",
+      "    return x * x;\n",
+      "c = 2;\n",
+      "d = square(c)\n",
+      "print d"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.9 page no : 163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\"\"\"\n",
+      "def SQUARE(x):\n",
+      "    return x*x\n",
+      "i = SQUARE(\"hello\");\n",
+      "print i\n",
+      "\"\"\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 10,
+       "text": [
+        "'\\ndef SQUARE(x):\\n    return x*x\\ni = SQUARE(\"hello\");\\nprint i\\n'"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.10 page no : 163"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "#define Velocity int\n",
+      "#typedef int Velocity;\n",
+      "# Not recommended"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 11,
+       "text": [
+        "'\\nEXAMPLE 13.10 page no : 163\\nHow to define synonyms for a type\\nNote : Python doesnot have synonyms for type as we do not have to explicitely \\ndeclare variables.\\n'"
+       ]
+      }
+     ],
+     "prompt_number": 11
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 13.11 page no : 164"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def printFruits(fruits,size):\n",
+      "    for i in range(size):\n",
+      "        print fruits[i] "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 12
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch15-checkpoint.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch15-checkpoint.ipynb
new file mode 100755
index 00000000..62a8a475
--- /dev/null
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch15-checkpoint.ipynb
@@ -0,0 +1,611 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:24f5f3b754e3fd6e8afab7bcb99e41e817ec5bce9faae498ba9fb75dd53f93ff"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h1> Chapter Fifteen : Portability"
+     ]
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.1 page no : 172"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "c = -100;\n",
+      "if (c < 0):\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.2 page no : 173"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "class BasicAttrType:\n",
+      "    counterGauge = 0x1000\n",
+      "    counterPeg = 0x2000\n",
+      "    conterAcc = 0x3000\n",
+      "    \n",
+      "\n",
+      "\n",
+      "t = BasicAttrType.counterGauge\n",
+      "print t"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "4096"
+       ]
+      }
+     ],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.3 page no : 173"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "a = ''\n",
+      "print a"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": []
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>example 15.5 page no : 174"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "result = 1234 * 567\n",
+      "print result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "699678"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>Example 15.6 page no : 175"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "import math # python has only one way to importing file.\n",
+      "from math import *"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>exmaple 15.7 page no : 176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      " \n",
+      "#   import inc.MyFile\n",
+      "#   import inc.MyFile\n",
+      "\n",
+      "#   import gui.xinterface"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 6,
+       "text": [
+        "'\\nexmaple 15.7 page no : 176\\nDirectory names in include directives\\nNote : python has . operator to import a file from directory\\n'"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.8 page no : 176"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "import math\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.9 page no : 178"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "class PersonRecord:\n",
+      "    ageM = ''\n",
+      "    phoneNumberM = 0\n",
+      "    nameM = ''"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.10 page no :  178"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "def stepAndConvert(a,n):\n",
+      "    b = a + str(n) # step n chars ahead\n",
+      "    return b # NO: Dangerous cast of const char* to int*\n",
+      "\n",
+      "\n",
+      "data = \"abcdefghijklmnop\"\n",
+      "anInt = 3;\n",
+      "i = stepAndConvert(data, anInt)\n",
+      "print i"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "abcdefghijklmnop3"
+       ]
+      }
+     ],
+     "prompt_number": 9
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.11 page  no :  179"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "INT_MIN = -2147483648\n",
+      "INT_MAX = 2147483647\n",
+      "UINT_MAX = 4294967295\n",
+      "i = 42\n",
+      "ui  = 2222222242;\n",
+      "j = i - ui;\n",
+      "print j"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-2222222200"
+       ]
+      }
+     ],
+     "prompt_number": 10
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.12 page no : 180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "zero = 0;\n",
+      "one = 1;\n",
+      "minusOne = zero - one;\n",
+      "print minusOne\n",
+      "result = one + minusOne;\n",
+      "print result"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "-1\n",
+        "0"
+       ]
+      }
+     ],
+     "prompt_number": 11
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.13 page no :  180"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "#pid1 = fork(); # NO: should use pid_t\n",
+      "\n",
+      "#pid2 = fork();"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.14 page no : 181"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "famousClimber = \"Edmund Hillary\"; # Uses Emc as prefix\n",
+      "print famousClimber"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Edmund Hillary"
+       ]
+      }
+     ],
+     "prompt_number": 13
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.15 page no : 183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcArray:\n",
+      "    def __init__(self,size):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 14
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.16 page no :  183"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "\n",
+      "false = 0;\n",
+      "true = 1;"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 15
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.17 page no : 184"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\"\"\"\n",
+      "i = 0;\n",
+      "for i in range(last()):\n",
+      "    pass\n",
+      "\n",
+      "for i in range(first()):\n",
+      "    pass\n",
+      "    \"\"\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 5,
+       "text": [
+        "'\\ni = 0;\\nfor i in range(last()):\\n    pass\\n\\nfor i in range(first()):\\n    pass\\n    '"
+       ]
+      }
+     ],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.18 page no : 185"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "def emcMax(a,  b):\n",
+      "    if a>b:\n",
+      "        return a\n",
+      "    return b\n",
+      "\n",
+      "def foo(i,j):\n",
+      "    m = emcMax(i, j); # usage of emcMax\n",
+      "\n",
+      "q = 0 # usage of class EmcQueue<int> and\n",
+      "s = 0 # EmcQueue<int>:s default constructor"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.19 page no : 186"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "class EmcQueue:\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.20 page no : 187"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "class DangerousString:\n",
+      "    def __init__(self,cp):\n",
+      "        pass\n",
+      "\n",
+      "    def char(self):\n",
+      "        pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>example 15.22 page no : 189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "def main(self):\n",
+      "    return 0"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.23"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [
+      "\n",
+      "\n",
+      "func(f1(), f2(), f3()) # f1 may be evaluated before f2 and f3,\n",
+      "# but don't depend on it!"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "<h3>EXAMPLE 15.24 page no : 189"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "a = [0,0,0]\n",
+      "i = 0\n",
+      "a[i] = i;\n",
+      "i += 1\n",
+      "print i \n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "1"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "code",
+     "collapsed": true,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch2-checkpoint.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch2-checkpoint.ipynb
new file mode 100755
index 00000000..a2d1bd52
--- /dev/null
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/.ipynb_checkpoints/ch2-checkpoint.ipynb
@@ -0,0 +1,249 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:025b4c65298f5bb6d48b99d717b6d0fce940f5a97ad7eb75ea5897c4c9595891"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter : Two :  Organizing the code"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.1 Page no : 12\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "#import EmcArray # EmcArray.py\n",
+      "#import iostream # The rest of the EmcArray.cc file "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.2 page no : 13\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "\n",
+      "class X :\n",
+      "    def __init__(self):\n",
+      "        pass    #self.aM = A()\n",
+      "    \n",
+      "    def returnA(self):\n",
+      "        pass    #return self.aM\n",
+      "        \n",
+      "    def withAParameter(self,a):\n",
+      "        pass    #self.aM = a"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 2
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.3 page no :14\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "class Y :\n",
+      "    def __init__(self):\n",
+      "        pass    #self.bM = B()\n",
+      "    \n",
+      "    def returnBPtr(self):\n",
+      "        pass    #return self.aM\n",
+      "        \n",
+      "    def withAParameter(self,b):\n",
+      "        pass    #self.bM = a\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.4 page no : 15\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "def module_exists(module_name):\n",
+      "    try:\n",
+      "        __import__(module_name)\n",
+      "    except ImportError:\n",
+      "        return False\n",
+      "    else:\n",
+      "        return True"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.5 page no : 15\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "def cStr(cpM):\n",
+      "    return cpM\n"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 5
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.6 page no : 17\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "\n",
+      "def max_(x,y):\n",
+      "    if x > y:\n",
+      "        return x\n",
+      "    return y\n",
+      "\n",
+      "def function(i,j):\n",
+      "    m = max_(i,j) # must instantiate max(int,int)\n",
+      "    print m\n",
+      "\n",
+      "function(5,10)    \n",
+      "    "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "10\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.7 page no : 17\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcQueue:\n",
+      "    def __init__(self):\n",
+      "        pass\n",
+      "     \n",
+      "    def insert(self,t):\n",
+      "        pass\n",
+      "\n",
+      "q = EmcQueue()\n",
+      "q.insert(42);"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 3,
+     "metadata": {},
+     "source": [
+      "EXAMPLE 2.8 page no : 18\n"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "\n",
+      "class EmcQueue:\n",
+      "    pass"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [],
+     "prompt_number": 8
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch1.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch1.ipynb
index 834bacf2..a9c91080 100755
--- a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch1.ipynb
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch1.ipynb
@@ -194,25 +194,13 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "\n",
-      "s1 = EmcString() # Belongs to the Emc Class Library\n",
-      "s2 = OtherString() # Belongs to the Other Class Library"
+      "#s1 = EmcString() # Belongs to the Emc Class Library\n",
+      "#s2 = OtherString() # Belongs to the Other Class Library"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "NameError",
-       "evalue": "name 'EmcString' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[1;32m<ipython-input-7-16beeed526dd>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m      4\u001b[0m \u001b[0mNote\u001b[0m \u001b[1;33m:\u001b[0m \u001b[0mthis\u001b[0m \u001b[0mwill\u001b[0m \u001b[0mgive\u001b[0m \u001b[0merror\u001b[0m \u001b[0mbecause\u001b[0m \u001b[0mfile\u001b[0m \u001b[0mdoesn\u001b[0m\u001b[0;31m'\u001b[0m\u001b[0mt\u001b[0m \u001b[0mhave\u001b[0m \u001b[1;32mclass\u001b[0m \u001b[0mEmcString\u001b[0m \u001b[1;32mand\u001b[0m \u001b[0mOtherString\u001b[0m\u001b[1;33m.\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m      5\u001b[0m '''\n\u001b[1;32m----> 6\u001b[1;33m \u001b[0ms1\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mEmcString\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;31m# Belongs to the Emc Class Library\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m      7\u001b[0m \u001b[0ms2\u001b[0m \u001b[1;33m=\u001b[0m \u001b[0mOtherString\u001b[0m\u001b[1;33m(\u001b[0m\u001b[1;33m)\u001b[0m \u001b[1;31m# Belongs to the Other Class Library\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
-        "\u001b[1;31mNameError\u001b[0m: name 'EmcString' is not defined"
-       ]
-      }
-     ],
-     "prompt_number": 7
+     "outputs": [],
+     "prompt_number": 4
     },
     {
      "cell_type": "heading",
@@ -227,24 +215,13 @@
      "collapsed": false,
      "input": [
       "\n",
-      "import RWCstring #include \"RWCstring.h\" /* Recommended */\n",
-      "from rw import cstring #include \"rw/cstring.h\" /* Sometimes needed */"
+      "#import RWCstring #include \"RWCstring.h\" /* Recommended */\n",
+      "#from rw import cstring #include \"rw/cstring.h\" /* Sometimes needed */"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "ImportError",
-       "evalue": "No module named RWCstring",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mImportError\u001b[0m                               Traceback (most recent call last)",
-        "\u001b[1;32m<ipython-input-8-4593d91551b4>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m      5\u001b[0m \u001b[0mNote\u001b[0m \u001b[1;33m:\u001b[0m \u001b[0mthis\u001b[0m \u001b[0mwould\u001b[0m \u001b[0mgive\u001b[0m \u001b[0merror\u001b[0m \u001b[0mbecause\u001b[0m \u001b[0mwe\u001b[0m \u001b[0mdont\u001b[0m \u001b[0mhave\u001b[0m \u001b[0mpackages\u001b[0m \u001b[0mwritten\u001b[0m \u001b[0mhere\u001b[0m\u001b[1;33m.\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m      6\u001b[0m '''\n\u001b[1;32m----> 7\u001b[1;33m \u001b[1;32mimport\u001b[0m \u001b[0mRWCstring\u001b[0m \u001b[1;31m#include \"RWCstring.h\" /* Recommended */\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m      8\u001b[0m \u001b[1;32mfrom\u001b[0m \u001b[0mrw\u001b[0m \u001b[1;32mimport\u001b[0m \u001b[0mcstring\u001b[0m \u001b[1;31m#include \"rw/cstring.h\" /* Sometimes needed */\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
-        "\u001b[1;31mImportError\u001b[0m: No module named RWCstring"
-       ]
-      }
-     ],
-     "prompt_number": 8
+     "outputs": [],
+     "prompt_number": 5
     },
     {
      "cell_type": "heading",
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch10.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch10.ipynb
index 52781089..6292c70e 100755
--- a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch10.ipynb
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch10.ipynb
@@ -103,11 +103,12 @@
       "    def __init__(self,maxsize):\n",
       "        pass\n",
       "\n",
-      "\n",
+      "\"\"\"\n",
       "class InvalidCollectionType(EmcException):\n",
       "    \n",
       "    def __init__(self,i):\n",
       "        pass\n",
+      "        \"\"\"\n",
       "\n",
       "class EmcCollectionFactory:\n",
       "    def __init__(self):\n",
@@ -121,19 +122,8 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "NameError",
-       "evalue": "name 'EmcException' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-3-5d8a499d2644>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m     22\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     23\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 24\u001b[0;31m \u001b[0;32mclass\u001b[0m \u001b[0mInvalidCollectionType\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mEmcException\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     25\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     26\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0m__init__\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0mi\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mNameError\u001b[0m: name 'EmcException' is not defined"
-       ]
-      }
-     ],
-     "prompt_number": 3
+     "outputs": [],
+     "prompt_number": 2
     },
     {
      "cell_type": "markdown",
@@ -146,10 +136,18 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "class EmcCollectionFactory:\n",
+      "    def __init__(self):\n",
+      "        pass\n",
+      "\n",
+      "    def create(self,type):\n",
+      "        pass\n",
       "\n",
+      "    def createArray(self):\n",
+      "        pass\n",
       "\n",
       "factory = EmcCollectionFactory()\n",
-      "collection = factory.create(ArrayId)\n",
+      "collection = factory.create(\"Array\")\n",
       "collection.insert(42); # EmcArrayCollection<int>::insert() is called\n",
       "print collection"
      ],
@@ -157,17 +155,14 @@
      "metadata": {},
      "outputs": [
       {
-       "ename": "NameError",
-       "evalue": "name 'EmcCollectionFactory' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-4-9ee6096719fb>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      5\u001b[0m '''\n\u001b[1;32m      6\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 7\u001b[0;31m \u001b[0mfactory\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mEmcCollectionFactory\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      8\u001b[0m \u001b[0mcollection\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfactory\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcreate\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mArrayId\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      9\u001b[0m \u001b[0mcollection\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0minsert\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m42\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m \u001b[0;31m# EmcArrayCollection<int>::insert() is called\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mNameError\u001b[0m: name 'EmcCollectionFactory' is not defined"
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "None\n"
        ]
       }
      ],
-     "prompt_number": 4
+     "prompt_number": 32
     },
     {
      "cell_type": "markdown",
@@ -364,27 +359,25 @@
      "collapsed": false,
      "input": [
       "\n",
+      "class EmcCollectionFactory:\n",
+      "    def __init__(self):\n",
+      "        pass\n",
       "\n",
+      "    def create(self,type):\n",
+      "        pass\n",
+      "\n",
+      "    def createArray(self):\n",
+      "        pass\n",
+      "    \n",
       "factrory = EmcCollectionFactory()\n",
-      "collection = factory.create(ArrayId);\n",
+      "collection = factory.create(\"Array\");\n",
       "if (not collection.isFull()):\n",
       "    collection.insert(42);"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "NameError",
-       "evalue": "name 'EmcCollectionFactory' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-11-0508dec5ea10>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      5\u001b[0m '''\n\u001b[1;32m      6\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 7\u001b[0;31m \u001b[0mfactrory\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mEmcCollectionFactory\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      8\u001b[0m \u001b[0mcollection\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfactory\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcreate\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mArrayId\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      9\u001b[0m \u001b[0;32mif\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0;32mnot\u001b[0m \u001b[0mcollection\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0misFull\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mNameError\u001b[0m: name 'EmcCollectionFactory' is not defined"
-       ]
-      }
-     ],
-     "prompt_number": 11
+     "outputs": [],
+     "prompt_number": 36
     },
     {
      "cell_type": "markdown",
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch12.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch12.ipynb
index a4d7907e..c8f2cfb1 100755
--- a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch12.ipynb
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch12.ipynb
@@ -26,26 +26,18 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "import socket\n",
+      "import sys\n",
+      "import os\n",
+      "sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM,0)\n",
       "\n",
-      "socketfd = socket(AF_UNIX, SOCK_STREAM, 0);\n",
-      "if(socketfd < 0):\n",
+      "if(sock < 0):\n",
       "    pass"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "NameError",
-       "evalue": "name 'socket' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-1-7161141a3c7c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m     10\u001b[0m \u001b[0;34m//\u001b[0m \u001b[0mcreate\u001b[0m \u001b[0msocket\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     11\u001b[0m '''\n\u001b[0;32m---> 12\u001b[0;31m \u001b[0msocketfd\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0msocket\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mAF_UNIX\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mSOCK_STREAM\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m0\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     13\u001b[0m \u001b[0;32mif\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0msocketfd\u001b[0m \u001b[0;34m<\u001b[0m \u001b[0;36m0\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     14\u001b[0m     \u001b[0;32mpass\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mNameError\u001b[0m: name 'socket' is not defined"
-       ]
-      }
-     ],
-     "prompt_number": 1
+     "outputs": [],
+     "prompt_number": 7
     },
     {
      "cell_type": "markdown",
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch13.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch13.ipynb
index a23bdf0e..8bf2f3f0 100755
--- a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch13.ipynb
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch13.ipynb
@@ -262,24 +262,22 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "\n",
+      "\"\"\"\n",
       "def SQUARE(x):\n",
       "    return x*x\n",
       "i = SQUARE(\"hello\");\n",
-      "print i"
+      "print i\n",
+      "\"\"\""
      ],
      "language": "python",
      "metadata": {},
      "outputs": [
       {
-       "ename": "TypeError",
-       "evalue": "can't multiply sequence by non-int of type 'str'",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-10-df398cb9cbc0>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      6\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mSQUARE\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      7\u001b[0m     \u001b[0;32mreturn\u001b[0m \u001b[0mx\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 8\u001b[0;31m \u001b[0mi\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mSQUARE\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"hello\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      9\u001b[0m \u001b[0;32mprint\u001b[0m \u001b[0mi\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;32m/home/jay/<ipython-input-10-df398cb9cbc0>\u001b[0m in \u001b[0;36mSQUARE\u001b[0;34m(x)\u001b[0m\n\u001b[1;32m      5\u001b[0m '''\n\u001b[1;32m      6\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mSQUARE\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 7\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mx\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      8\u001b[0m \u001b[0mi\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mSQUARE\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"hello\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      9\u001b[0m \u001b[0;32mprint\u001b[0m \u001b[0mi\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mTypeError\u001b[0m: can't multiply sequence by non-int of type 'str'"
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 10,
+       "text": [
+        "'\\ndef SQUARE(x):\\n    return x*x\\ni = SQUARE(\"hello\");\\nprint i\\n'"
        ]
       }
      ],
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch15.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch15.ipynb
index 32ad5666..62a8a475 100755
--- a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch15.ipynb
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch15.ipynb
@@ -336,25 +336,14 @@
      "collapsed": false,
      "input": [
       "\n",
-      "pid1 = fork(); # NO: should use pid_t\n",
+      "#pid1 = fork(); # NO: should use pid_t\n",
       "\n",
-      "pid2 = fork();"
+      "#pid2 = fork();"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "NameError",
-       "evalue": "name 'fork' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-12-ef16c6a16507>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      4\u001b[0m \u001b[0mNote\u001b[0m \u001b[0;34m:\u001b[0m \u001b[0mIt\u001b[0m \u001b[0mwould\u001b[0m \u001b[0mshoot\u001b[0m \u001b[0merror\u001b[0m \u001b[0mbecause\u001b[0m \u001b[0mfork\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;32mis\u001b[0m \u001b[0;32mnot\u001b[0m \u001b[0mdefined\u001b[0m \u001b[0mhere\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      5\u001b[0m '''\n\u001b[0;32m----> 6\u001b[0;31m \u001b[0mpid1\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfork\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m \u001b[0;31m# NO: should use pid_t\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      7\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      8\u001b[0m \u001b[0mpid2\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfork\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m;\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mNameError\u001b[0m: name 'fork' is not defined"
-       ]
-      }
-     ],
-     "prompt_number": 12
+     "outputs": [],
+     "prompt_number": 2
     },
     {
      "cell_type": "markdown",
@@ -439,29 +428,28 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "\n",
+      "\"\"\"\n",
       "i = 0;\n",
       "for i in range(last()):\n",
       "    pass\n",
       "\n",
       "for i in range(first()):\n",
-      "    pass"
+      "    pass\n",
+      "    \"\"\""
      ],
      "language": "python",
      "metadata": {},
      "outputs": [
       {
-       "ename": "NameError",
-       "evalue": "name 'last' is not defined",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-        "\u001b[0;32m/home/jay/<ipython-input-16-119935826b55>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      5\u001b[0m '''\n\u001b[1;32m      6\u001b[0m \u001b[0mi\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;36m0\u001b[0m\u001b[0;34m;\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 7\u001b[0;31m \u001b[0;32mfor\u001b[0m \u001b[0mi\u001b[0m \u001b[0;32min\u001b[0m \u001b[0mrange\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mlast\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      8\u001b[0m     \u001b[0;32mpass\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      9\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
-        "\u001b[0;31mNameError\u001b[0m: name 'last' is not defined"
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 5,
+       "text": [
+        "'\\ni = 0;\\nfor i in range(last()):\\n    pass\\n\\nfor i in range(first()):\\n    pass\\n    '"
        ]
       }
      ],
-     "prompt_number": 16
+     "prompt_number": 5
     },
     {
      "cell_type": "markdown",
diff --git a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch2.ipynb b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch2.ipynb
index 8660012f..a2d1bd52 100755
--- a/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch2.ipynb
+++ b/C++_in_Action_-_Industrial-Strength_Programming_Techniques/ch2.ipynb
@@ -29,24 +29,13 @@
      "collapsed": false,
      "input": [
       "\n",
-      "import EmcArray # EmcArray.py\n",
-      "import iostream # The rest of the EmcArray.cc file "
+      "#import EmcArray # EmcArray.py\n",
+      "#import iostream # The rest of the EmcArray.cc file "
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "ename": "ImportError",
-       "evalue": "No module named EmcArray",
-       "output_type": "pyerr",
-       "traceback": [
-        "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m\n\u001b[1;31mImportError\u001b[0m                               Traceback (most recent call last)",
-        "\u001b[1;32m<ipython-input-1-b23807a66872>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m()\u001b[0m\n\u001b[0;32m      4\u001b[0m \u001b[0mNote\u001b[0m \u001b[1;33m:\u001b[0m \u001b[0mwould\u001b[0m \u001b[0mgive\u001b[0m \u001b[0merror\u001b[0m \u001b[0mbecause\u001b[0m \u001b[0mwe\u001b[0m \u001b[0mdont\u001b[0m \u001b[0mhave\u001b[0m \u001b[0mEmcArray\u001b[0m \u001b[1;32mand\u001b[0m \u001b[0miostream\u001b[0m \u001b[0mpackages\u001b[0m\u001b[1;33m.\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0;32m      5\u001b[0m '''\n\u001b[1;32m----> 6\u001b[1;33m \u001b[1;32mimport\u001b[0m \u001b[0mEmcArray\u001b[0m \u001b[1;31m# EmcArray.py\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m\u001b[0;32m      7\u001b[0m \u001b[1;32mimport\u001b[0m \u001b[0miostream\u001b[0m \u001b[1;31m# The rest of the EmcArray.cc file\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n",
-        "\u001b[1;31mImportError\u001b[0m: No module named EmcArray"
-       ]
-      }
-     ],
-     "prompt_number": 1
+     "outputs": [],
+     "prompt_number": 2
     },
     {
      "cell_type": "heading",