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Alias `std.meta.Stride`

Selects a subset of the argument list by stepping with fixed stepSize over the list. A negative stepSize starts iteration with the last list element.


						
				alias Stride(int stepSize, Args...)
				 = AliasSeq!();

Parameters

Name	Description
stepSize	Number of elements to increment on each iteration. Can't be `0`.
Args	Template arguments

Returns

A template argument list filtered by the selected stride.

Example

static assert(is(Stride!(1, short, int, long) == AliasSeq!(short, int, long)));
static assert(is(Stride!(2, short, int, long) == AliasSeq!(short, long)));
static assert(is(Stride!(-1, short, int, long) == AliasSeq!(long, int, short)));
static assert(is(Stride!(-2, short, int, long) == AliasSeq!(long, short)));

alias attribs = AliasSeq!(short, int, long, ushort, uint, ulong);
static assert(is(Stride!(3, attribs) == AliasSeq!(short, ushort)));
static assert(is(Stride!(3, attribs[1 .. $]) == AliasSeq!(int, uint)));
static assert(is(Stride!(-3, attribs) == AliasSeq!(ulong, long)));

Authors

Walter Bright, David Nadlinger

License

Boost License 1.0.