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Function `std.stdio.readf`

Reads formatted data from stdin using std.format.formattedRead.


						
				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

Boost License 1.0.