C++ -- a valid idea?

[Florian Weimer]

* Alexis Wilke:

> Code which use an int will go very fast:
>
>    for(int i = 0; i < max; i++) ...
>
> If you transform the variable i with an iterator from the standard 
> library:
>
>    for(interator it = v.begin(); it < max; it++) ...
>
> The it++ expression is in many cases slow.

In such cases, you should specify attribute warn_unused_result for the
postfix operator.

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