io_synesthesist

Macro writeln

Source 
macro_rules! writeln {
    ($text: expr) => { ... };
    ($text: expr, $len: expr) => { ... };
    ($text: expr, $len: expr, $out: expr) => { ... };
}
Expand description

The writeln macro writes to output the text with a breakline and returns the Some 0i32 or None according to success.