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Alias `std.meta.Filter`

Filters an AliasSeq using a template predicate. Returns an AliasSeq of the elements which satisfy the predicate.


						
				alias Filter(alias pred, args...)
				 = AliasSeq!();

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)));

Authors

Walter Bright, David Nadlinger

License

Boost License 1.0.