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Template std.meta.Filter
Filters an AliasSeq
using a template predicate. Returns an
AliasSeq
of the elements which satisfy the predicate.
template Filter(alias pred, TList...)
;
Example
import std .traits : isNarrowString, isUnsigned;
alias Types1 = AliasSeq!(string, wstring, dchar[], char[], dstring, int);
alias TL1 = Filter!(isNarrowString, Types1);
static assert(is(TL1 == AliasSeq!(string, wstring, char[])));
alias Types2 = AliasSeq!(int, byte, ubyte, dstring, dchar, uint, ulong);
alias TL2 = Filter!(isUnsigned, Types2);
static assert(is(TL2 == AliasSeq!(ubyte, uint, ulong)));
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