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| author | Guillaume Gomez <guillaume.gomez@huawei.com> | 2022-09-25 23:58:33 +0200 |
|---|---|---|
| committer | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2022-09-26 12:37:41 +0200 |
| commit | 475aeab79e7d9b0fcdc4fef7bc13e98772d24a94 (patch) | |
| tree | ab127f03351c872f2285eecfb57a5897179759ea | |
| parent | f5193a9fcc73dc09e41a90c5a2c97fc9acc16032 (diff) | |
| download | rust-475aeab79e7d9b0fcdc4fef7bc13e98772d24a94.tar.gz rust-475aeab79e7d9b0fcdc4fef7bc13e98772d24a94.zip | |
Improve code example for Option::unwrap_or_default
| -rw-r--r-- | library/core/src/option.rs | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/library/core/src/option.rs b/library/core/src/option.rs index ed7703befcf..4a93df4591b 100644 --- a/library/core/src/option.rs +++ b/library/core/src/option.rs @@ -834,20 +834,12 @@ impl<T> Option<T> { /// /// # Examples /// - /// Converts a string to an integer, turning poorly-formed strings - /// into 0 (the default value for integers). [`parse`] converts - /// a string to any other type that implements [`FromStr`], returning - /// [`None`] on error. - /// /// ``` - /// let good_year_from_input = "1909"; - /// let bad_year_from_input = "190blarg"; - /// // Result::ok() converts a Result<T> to an Option<T> - /// let good_year = good_year_from_input.parse().ok().unwrap_or_default(); - /// let bad_year = bad_year_from_input.parse().ok().unwrap_or_default(); + /// let x: Option<u32> = None; + /// let y: Option<u32> = Some(12); /// - /// assert_eq!(1909, good_year); - /// assert_eq!(0, bad_year); + /// assert_eq!(x.unwrap_or_default(), 0); + /// assert_eq!(y.unwrap_or_default(), 12); /// ``` /// /// [default value]: Default::default |
