1 files changed, 9 insertions, 2 deletions
diff --git a/include/gras/sbuffer.i b/include/gras/sbuffer.i
index b910588..69b4833 100644
--- a/include/gras/sbuffer.i
+++ b/include/gras/sbuffer.i
@@ -37,10 +37,17 @@
                 nitems=self.length,
                 readonly=readonly
             )
+    %}
 
-        def __len__(self): return self.length
+    size_t __len__(void)
+    {
+        return ($self)->length;
+    }
 
-    %}
+    bool __nonzero__(void)
+    {
+        return bool(*($self));
+    }
 }
 
 #endif /*INCLUDED_GRAS_SBUFFER_I*/