Declare an object inside or outside a loop?

Question

Is there any performance penalty for the following code snippet?

for (int i=0; i         


        

Answer 1

As someone who maintains more code than writes code.

Version 1 is much preferred - keeping scope as local as possible is essential for understanding. Its also easier to refactor this sort of code.

As discussed above - I doubt this would make any difference in efficiency. In fact I would argue that if the scope is more local a compiler may be able to do more with it!