std::io::Result

type Result<T> = Result<T, Error>;

A specialized Result`Result` type for I/O operations.

This type is broadly used across std::io`std::io` for any operation which may produce an error.

This typedef is generally used to avoid writing out io::Error directly and is otherwise a direct mapping to Result`Result`.

While usual Rust style is to import types directly, aliases of Result`Resultoften are not, to make it easier to distinguish between them.Resultis generally assumed to bestd::result::Result, and so users of this alias will generally useio::Resultinstead of shadowing the prelude's import ofstd::result::Result`.

Examples

A convenience function that bubbles an io::Result to its caller:

fn main() { use std::io; fn get_string() -> io::Result<String> { let mut buffer = String::new(); try!(io::stdin().read_line(&mut buffer)); Ok(buffer) } }

use std::io;

fn get_string() -> io::Result<String> {
    let mut buffer = String::new();

    try!(io::stdin().read_line(&mut buffer));

    Ok(buffer)
}