Macro std::eprint
macro_rules! eprint {
($($arg : tt) *) => { ... };
}Prints to the standard error.
Equivalent to the print! macro, except that output goes to io::stderr instead of io::stdout. See print! for example usage.
Use eprint! only for error and progress messages. Use print! instead for the primary output of your program.
Panics
Panics if writing to io::stderr fails.
Examples
eprint!("Error: Could not complete task");
© 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.eprint.html