Menu
Search

API Documentation

version 2.108.1

overview

View source code
Display the source code in std/meta.d from which this page was generated on github.
Report a bug
If you spot a problem with this page, click here to create a Bugzilla issue.
Improve this page
Quickly fork, edit online, and submit a pull request for this page. Requires a signed-in GitHub account. This works well for small changes. If you'd like to make larger changes you may want to consider using local clone.

Alias std.meta.Repeat

Creates an AliasSeq which repeats items exactly n times.

alias Repeat(ulong n, items...) = AliasSeq!();

Example

alias ImInt0 = Repeat!(0, int);
static assert(is(ImInt0 == AliasSeq!()));

alias ImInt1 = Repeat!(1, immutable(int));
static assert(is(ImInt1 == AliasSeq!(immutable(int))));

alias Real3 = Repeat!(3, real);
static assert(is(Real3 == AliasSeq!(real, real, real)));

alias Real12 = Repeat!(4, Real3);
static assert(is(Real12 == AliasSeq!(real, real, real, real, real, real,
    real, real, real, real, real, real)));

alias Composite = AliasSeq!(uint, int);
alias Composite2 = Repeat!(2, Composite);
static assert(is(Composite2 == AliasSeq!(uint, int, uint, int)));

alias ImInt10 = Repeat!(10, int);
static assert(is(ImInt10 == AliasSeq!(int, int, int, int, int, int, int, int, int, int)));

alias Big = Repeat!(1_000_000, int);

Example

auto staticArray(T, size_t n)(Repeat!(n, T) elems)
{
    T[n] a = [elems];
    return a;
}

auto a = staticArray!(long, 3)(3, 1, 4);
assert(is(typeof(a) == long[3]));
writeln(a); // [3, 1, 4]

Authors

Walter Bright, David Nadlinger

License

Boost License 1.0.