std::eprint - Rust
Description: API documentation for the Rust `eprint` macro in crate `std`.
Keywords: rust, rustlang, rust-lang, eprint

# Macro std::eprint 1.19.0 [−] [src]

    macro_rules! eprint {
        ($($arg:tt)*) => { ... };
    }

Macro for printing 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.

# Help

## Keyboard Shortcuts

?
  Show this help dialog
S
  Focus the search field
⇤
  Move up in search results
⇥
  Move down in search results
⏎
  Go to active search result
+
  Collapse/expand all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)