Re: [boost] [static_if] Is there interest in a `static if` emulation library?

Subject: Re: [boost] [static_if] Is there interest in a `static if` emulation library?
From: Robert Ramey (ramey_at_[hidden])
Date: 2014-08-31 22:52:12

Sorry for being dense, but why is this different than the following:

lcaminiti wrote
> template< typename T >
> void assign ( T& x, T const& y ) {
>     x = y;
>     if(boost::has_equal_to&lt;T&gt;::value){
>             assert(x == y);
>             std::cout << "asserted for: " << typeid(T).name() <<
> std::endl;
>     }
>     else {
>             std::cout << "cannot assert for: " << typeid(T).name() <<
> std::endl;
>     }
> }

since the condition is known at compile time, can't the optimizer be counted
on to
compile only the corresponding code?  Why doesn't this give the same effect
as
the proposal?

Robert Ramey

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