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Function std.stdio.readf
Reads formatted data from stdin
using std
.
uint readf(alias format, A...)
(
auto ref A args
)
if (isSomeString!(typeof(format)));
uint readf(A...)
(
scope const(char)[] format,
auto ref A args
);
Parameters
Name | Description |
---|---|
format | The format string. When passed as a compile-time argument, the string will be statically checked against the argument types passed. |
args | Items to be read. |
Returns
Same as formattedRead
: The number of variables filled. If the input range r
ends early,
this number will be less than the number of variables provided.
Example
// test.d
void main()
{
import std .stdio;
foreach (_; 0 .. 3)
{
int a;
readf!" %d"(a);
writeln(++a);
}
}
% echo "1 2 3" | rdmd test.d 2 3 4
Authors
Walter Bright, Andrei Alexandrescu, Alex Rønne Petersen
License
Copyright © 1999-2022 by the D Language Foundation | Page generated by ddox.