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Alias std.stdio.stdout
The standard output stream.
alias stdout
;
Returns
stdout as a File
.
Note
The returned File
wraps core
, and
is therefore thread global. Reassigning stdout
to a different
File
must be done in a single-threaded or locked context in
order to avoid race conditions.
All writing to stdout
automatically locks the file globally,
and will cause all other threads calling write
to wait until
the lock is released.
Example
void main()
{
stdout .writeln("Write a message to stdout.");
}
Example
void main()
{
import std .algorithm .iteration : filter, map, sum;
import std .format : format;
import std .range : iota, tee;
int len;
const r = 6 .iota
.filter!(a => a % 2) // 1 3 5
.map!(a => a * 2) // 2 6 10
.tee!(_ => stdout .writefln("len: %d", len++))
.sum;
writeln(r); // 18
}
Example
void main()
{
import std .algorithm .mutation : copy;
import std .algorithm .iteration : map;
import std .format : format;
import std .range : iota;
10 .iota
.map!(e => "N: %d" .format(e))
.copy(stdout .lockingTextWriter()); // the OutputRange
}
Authors
Walter Bright, Andrei Alexandrescu, Alex Rønne Petersen
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.