• =?UTF-8?B?Ik5vcmRsw7Z3Ig==?= (3/3) Aug 23 2014 I'm looking for a trait, say isCTExpression, that can check
• =?UTF-8?B?Ik5vcmRsw7Z3Ig==?= (4/5) Aug 23 2014 I just say
• =?UTF-8?B?Ik5vcmRsw7Z3Ig==?= (16/17) Aug 23 2014 As a complement I came up with

=?UTF-8?B?Ik5vcmRsw7Z3Ig==?= <per.nordlow gmail.com> writes:

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?

=?UTF-8?B?Ik5vcmRsw7Z3Ig==?= <per.nordlow gmail.com> writes:

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?

=?UTF-8?B?Ik5vcmRsw7Z3Ig==?= <per.nordlow gmail.com> writes:

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);
}