"temporary" templates

[Stefan Koch]

On Monday, 2 December 2019 at 02:02:04 UTC, Suleyman wrote:
>
> Not to this extent though. What we're potentially discussing 
> here is functions which have a reusable body like a runnable 
> template. For example a CTFE function `bool isSame(alias A, 
> alias B) { return __traits(isSame, A, B); }` this is unlike any 
> regular function that we have today.

Interesting this is exactly the syntax I wanted to use ;)

Any ctfe function that has an alias parameter is a ctfe only 
function.
Using this you can give a function a default alias parameter if 
you want it to be compile time only.

it's a simple rule, and not confusing at all.