Compile time function execution...

[Ary Manzana]

BCS escribió:
> Ary Manzana wrote:
>> A question: is there anyway the compiler can tell the user if a 
>> certain function can be executed at compile time? Those six rules may 
>> be hard to memorize and while coding sensitive code it would be great 
>> to ask the compiler "Is the function I'm writing can be executed at 
>> compile time?". Otherwise it's just a guess.
> 
> int[foo()] should do it, I think, or temp!(foo()).
> 
> Both hack, but...

It would be nice to have something like this in phobos:

-------------------------------------------------
import ... ?

int square(int i) { return i * i; }

static assert (isCompileTimeExecution(square());
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so that if the function is changed you can still assert that or know 
that you've lost it.