Menu
Search

API Documentation

version 2.080.0

overview

View source code
Display the source code in std/range/package.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.

Function std.range.bitwise

Bitwise adapter over an integral type range. Consumes the range elements bit by bit, from the least significant bit to the most significant bit.

auto auto bitwise(R) (
  auto ref R range
)
if (isInputRange!R && isIntegral!(ElementType!R));

Parameters

NameDescription
R an integral input range to iterate over
range range to consume bit by by

Returns

A Bitwise input range with propagated forward, bidirectional and random access capabilities

Example

import std.algorithm.comparison : equal;
import std.format : format;

// 00000011 00001001
ubyte[] arr = [3, 9];
auto r = arr.bitwise;

// iterate through it as with any other range
writeln(format("%(%d%)", r)); // "1100000010010000"
assert(format("%(%d%)", r.retro).equal("1100000010010000".retro));

auto r2 = r[5 .. $];
// set a bit
r[2] = 1;
writeln(arr[0]); // 7
writeln(r[5]); // r2[0]

Example

You can use bitwise to implement an uniform bool generator 

import std.algorithm.comparison : equal;
import std.random : rndGen;

auto rb = rndGen.bitwise;
static assert(isInfinite!(typeof(rb)));

auto rb2 = rndGen.bitwise;
// Don't forget that structs are passed by value
assert(rb.take(10).equal(rb2.take(10)));

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.