Re: [boost] [concept_check.hpp] unreferenced formal parameter line 227

From: Simon Buchan (simon_at_[hidden])
Date: 2005-10-12 01:36:36

John D Lamb wrote:
> Kevin Wheatley wrote:
> 
>>Hi,
>>
>>I was wondering if anybody has thought about adding a #else to the #if
>>!defined(_ITERATOR) to ignore the unused variable warning in
>>AssignableConcept::const_constraints() you get when compiling on VC7.1
>>? (Or am I missing something subtle about the situation)
> 
> 
> In gcc you can suppress a warning like this by explicitly casting to void:
>   static_cast<void>( x );
> 
> Maybe the same method works in VC7 and gives cleaner compilation.
> 
That works fine everywhere. It's similar to (void)0, which is a popular 
way to say "do nothing".