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Use if-let in std::result documentation

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This takes an opportunity to show yet-another-way of dealing with
Results and matching.
This commit is contained in:
Simonas Kazlauskas 2015-01-13 20:25:13 +02:00
parent 064c21efd2
commit 1217007c83
1 changed files with 4 additions and 6 deletions
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10
src/libcore/result.rs
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@ -178,13 +178,11 @@
//! fn write_info(info: &Info) -> Result<(), IoError> {
//! let mut file = File::open_mode(&Path::new("my_best_friends.txt"), Open, Write);
//! // Early return on error
//! match file.write_line(format!("name: {}", info.name).as_slice()) {
//! Ok(_) => (),
//! Err(e) => return Err(e)
//! if let Err(e) = file.write_line(format!("name: {}", info.name).as_slice()) {
//! return Err(e)
//! }
//! match file.write_line(format!("age: {}", info.age).as_slice()) {
//! Ok(_) => (),
//! Err(e) => return Err(e)
//! if let Err(e) = file.write_line(format!("age: {}", info.age).as_slice()) {
//! return Err(e)
//! }
//! return file.write_line(format!("rating: {}", info.rating).as_slice());
//! }