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Macro std::println

macro_rules! println {
    () => { ... };
    ($fmt:expr) => { ... };
    ($fmt:expr, $($arg:tt)*) => { ... };
}

Macro for printing 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).

Use the format! syntax to write data to the standard output. 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");

© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/macro.println.html