# HG changeset patch
# User Jacob Carlborg <doob@me.com>
# Date 1277500069 -7200
# Node ID 32152d5fad4ba56526141d6caeca0a6f3849299d
# Parent  ae24aae69a3b618eedcd76843df4703748766a9b
nameOfFieldAt fails poorly if position >= tuple.length

diff -r ae24aae69a3b -r 32152d5fad4b orange/util/Reflection.d
--- a/orange/util/Reflection.d	Fri Jun 25 20:27:27 2010 +0200
+++ b/orange/util/Reflection.d	Fri Jun 25 23:07:49 2010 +0200
@@ -258,7 +258,7 @@
 }
 
 /**
- * Evaluates to a string containing the name of the field at given position in the type given type.
+ * Evaluates to a string containing the name of the field at given position in the given type.
  * 
  * Params:
  * 		T = the type of the class/struct
@@ -266,6 +266,8 @@
  */
 template nameOfFieldAt (T, size_t position)
 {
+    static assert (position < T.tupleof.length, format!(`The given position "`, position, `" is greater than the number of fields (`, T.tupleof.length, `) in the type "`, T, `"`));
+    
 	static if (T.tupleof[position].stringof.length > T.stringof.length + 3)
 		const nameOfFieldAt = T.tupleof[position].stringof[1 + T.stringof.length + 2 .. $];