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version 2.109.1

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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 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.