type Result<T> = Result<T, Error>;
A specialized Result
type for I/O operations.
This type is broadly used across 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
.
While usual Rust style is to import types directly, aliases of Result
often are not, to make it easier to distinguish between them. Result
is generally assumed to be std::result::Result
, and so users of this alias will generally use io::Result
instead of shadowing the prelude's import of std::result::Result
.
A convenience function that bubbles an io::Result
to its caller:
use std::io; fn get_string() -> io::Result<String> { let mut buffer = String::new(); io::stdin().read_line(&mut buffer)?; Ok(buffer) }
© 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/io/type.Result.html