bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Stop using ok().expect() in Result docs

Browse source
This commit is contained in:
Florian Hartwig 2015-11-01 20:41:23 +01:00
parent f7a61678e3
commit 4168e026b4
1 changed files with 3 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/libcore/result.rs
View file

@ -117,16 +117,15 @@
//! warning (by default, controlled by the `unused_must_use` lint).
//!
//! You might instead, if you don't want to handle the error, simply
//! panic, by converting to an `Option` with `ok`, then asserting
//! success with `expect`. This will panic if the write fails, proving
//! a marginally useful message indicating why:
//! assert success with `expect`. This will panic if the
//! write fails, providing a marginally useful message indicating why:
//!
//! ```{.no_run}
//! use std::fs::File;
//! use std::io::prelude::*;
//!
//! let mut file = File::create("valuable_data.txt").unwrap();
//! file.write_all(b"important message").ok().expect("failed to write message");
//! file.write_all(b"important message").expect("failed to write message");
//! ```
//!
//! You might also simply assert success: