On Saturday, 18 April 2015 at 21:11:28 UTC, HaraldZealot wrote:
On Saturday, 18 April 2015 at 20:42:09 UTC, Ali Çehreli wrote:
On 04/18/2015 01:30 PM, HaraldZealot wrote:
Is it possible iterate over enum (preferable in compile time)
or at
least check that particular value belong to enum?
EnumMembers:
http://dlang.org/phobos/std_traits.html#EnumMembers
It returns a "static tuple", meaning that a foreach over those
members will be a compile-time foreach. (No loop at all at
run-time, the body is unrolled for every member.)
Ali
Many thanks
If you want a dynamic version use
[EnumMembers!T]
or without enumerator aliases (enumerator value duplicate)
import std.traits: EnumMembers;
import std.algorithm: sort, uniq;
return [EnumMembers!T].sort().uniq;
I've turned this into enumMembers at
https://github.com/nordlow/justd/blob/master/traits_ex.d#L396
This prevents the foreach loop from being inlined. I've had
problems with compilation performance with nested
foreach-iterating over EnumMembers!T with 100s of elements.
