Macro std::println

1.0.0 · source · [−]
macro_rules! println {
    () => { ... };
    ($($arg:tt)*) => { ... };
}
Expand description

Prints to the standard output, with a newline.

On all platforms, the newline is the LINE FEED character (\n/U+000A) alone (no additional CARRIAGE RETURN (\r/U+000D)).

This macro uses the same syntax as format!, but writes to the standard output instead. See std::fmt for more information.

Use println! only for the primary output of your program. Use eprintln! instead to print error and progress messages.

Panics

Panics if writing to io::stdout fails.

Examples

println!(); // prints just a newline
println!("hello there!");
println!("format {} arguments", "some");
Run