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version 2.109.0

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Enum member std.meta.aliasSeqOf

Converts any foreach-iterable entity (e.g. an input range) to an alias sequence.

enum aliasSeqOf(alias iter) = Impl.init.tupleof;

Parameters

NameDescription
iter the entity to convert into an AliasSeq. It must be able to be able to be iterated over using a foreach-statement.

Returns

An AliasSeq containing the values produced by iterating over iter.

Example

import std.algorithm.iteration : map;
import std.algorithm.sorting : sort;
import std.string : capitalize;

struct S
{
    int a;
    int c;
    int b;
}

alias capMembers = aliasSeqOf!([__traits(allMembers, S)].sort().map!capitalize());
static assert(capMembers[0] == "A");
static assert(capMembers[1] == "B");
static assert(capMembers[2] == "C");

Example

static immutable REF = [0, 1, 2, 3];
foreach (I, V; aliasSeqOf!([0, 1, 2, 3]))
{
    static assert(V == I);
    static assert(V == REF[I]);
}

Authors

Walter Bright, David Nadlinger

License

Boost License 1.0.