I'm looking for a trait, say isCTExpression, that can check whether an alias parameter is an expression evaluable during compile-time? Have anybody written such a thing?

On Saturday, 23 August 2014 at 22:12:06 UTC, Nordlöw wrote:
> I'm looking for a trait, say isCTExpression, that can check

I just say

http://forum.dlang.org/thread/mailman.1953.1373509028.13711.digitalmars-d@puremagic.com

Is this still the preferred way to do it?

On Saturday, 23 August 2014 at 22:14:34 UTC, Nordlöw wrote:
> On Saturday, 23 August 2014 at 22:12:06 UTC, Nordlöw wrote:

As a complement I came up with

/** Check if the value of $(D expr) is known at compile-time.
    See also: http://forum.dlang.org/thread/owlwzvidwwpsrelpkbok@forum.dlang.org
*/
enum isCTEable(alias id) = __traits(compiles, { enum idAlias = id; });

unittest
{
    static assert(isCTEable!11);
    enum x = 11;
    static assert(isCTEable!x);
    auto y = 11;
    static assert(!isCTEable!y);
}