Display the source code in std/range/package.d from which this page was generated on github.

If you spot a problem with this page, click here to create a Bugzilla issue.

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.

`std.range.Indexed/indexed` - multiple declarations

Function indexed

This struct takes two ranges, source and indices, and creates a view of source as if its elements were reordered according to indices. indices may include only a subset of the elements of source and may also repeat elements.


						
				Indexed!(Source,Indices) indexed(Source, Indices)
				(
				

				  Source source,
				

				  Indices indices
				

				);

Source must be a random access range. The returned range will be bidirectional or random-access if Indices is bidirectional or random-access, respectively.

Example

import std.algorithm.comparison : equal;
auto source = [1, 2, 3, 4, 5];
auto indices = [4, 3, 1, 2, 0, 4];
auto ind = indexed(source, indices);
assert(equal(ind, [5, 4, 2, 3, 1, 5]));
assert(equal(retro(ind), [5, 1, 3, 2, 4, 5]));

Struct Indexed


						
				struct Indexed(Source, Indices)
				

				  
				

				if (isRandomAccessRange!Source && isInputRange!Indices && is(typeof(Source.init[ElementType!Indices.init])));

Source must be a random access range. The returned range will be bidirectional or random-access if Indices is bidirectional or random-access, respectively.

Properties

Name	Type	Description
`back`[get, set]	`auto`	Range primitives
`front`[get, set]	`auto`	Range primitives
`indices`[get]	`Indices`	Returns the indices range.
`length`[get]	`size_t`	Range primitives
`save`[get]	`typeof(this)`	Range primitives
`source`[get]	`Source`	Returns the source range.

Methods

Name	Description
`moveAt`	Range primitives
`moveBack`	Range primitives
`moveFront`	Range primitives
`opIndex`	Range primitives
`opIndexAssign`	Range primitives
`opSlice`	Range primitives
`physicalIndex`	Returns the physical index into the source range corresponding to a given logical index. This is useful, for example, when indexing an `Indexed` without adding another layer of indirection.
`popBack`	Range primitives
`popFront`	Range primitives

Example

import std.algorithm.comparison : equal;
auto source = [1, 2, 3, 4, 5];
auto indices = [4, 3, 1, 2, 0, 4];
auto ind = indexed(source, indices);
assert(equal(ind, [5, 4, 2, 3, 1, 5]));
assert(equal(retro(ind), [5, 1, 3, 2, 4, 5]));

Authors

Andrei Alexandrescu, David Simcha, Jonathan M Davis, and Jack Stouffer. Credit for some of the ideas in building this module goes to Leonardo Maffi.

License

Boost License 1.0.

API Documentation

std.range.Indexed/indexed - multiple declarations

Function indexed

Example

Struct Indexed

Properties

Methods

Example

Authors

License

`std.range.Indexed/indexed` - multiple declarations