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version 2.103.0

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std.range.NullSink/nullSink - multiple declarations

Function nullSink

An OutputRange that discards the data it receives.

ref NullSink nullSink() pure nothrow @nogc @safe;

Example

import std.algorithm.iteration : map;
import std.algorithm.mutation : copy;
[4, 5, 6].map!(x => x * 2).copy(nullSink); // data is discarded

Example

import std.csv : csvNextToken;

string line = "a,b,c";

// ignore the first column
line.csvNextToken(nullSink, ',', '"');
line.popFront;

// look at the second column
Appender!string app;
line.csvNextToken(app, ',', '"');
writeln(app.data); // "b"

Struct NullSink

An OutputRange that discards the data it receives.

struct NullSink ;

Example

import std.algorithm.iteration : map;
import std.algorithm.mutation : copy;
[4, 5, 6].map!(x => x * 2).copy(nullSink); // data is discarded

Example

import std.csv : csvNextToken;

string line = "a,b,c";

// ignore the first column
line.csvNextToken(nullSink, ',', '"');
line.popFront;

// look at the second column
Appender!string app;
line.csvNextToken(app, ',', '"');
writeln(app.data); // "b"

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.