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Rollup merge of #45349 - christianpoveda:closures_str_find, r=steveklabnik

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added examples of closures for str::find

This is an attempt to fix https://github.com/rust-lang/rust/issues/45327

r? @steveklabnik
This commit is contained in:
kennytm 2017-10-19 23:13:28 +08:00
commit 207dab5773
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1 changed files with 3 additions and 1 deletions
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src/liballoc/str.rs
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@ -959,13 +959,15 @@ impl str {
/// assert_eq!(s.find("Léopard"), Some(13)); /// assert_eq!(s.find("Léopard"), Some(13));
/// ``` /// ```
/// ///
/// More complex patterns with closures: /// More complex patterns using point-free style and closures:
/// ///
/// ``` /// ```
/// let s = "Löwe 老虎 Léopard"; /// let s = "Löwe 老虎 Léopard";
/// ///
/// assert_eq!(s.find(char::is_whitespace), Some(5)); /// assert_eq!(s.find(char::is_whitespace), Some(5));
/// assert_eq!(s.find(char::is_lowercase), Some(1)); /// assert_eq!(s.find(char::is_lowercase), Some(1));
/// assert_eq!(s.find(|c: char| c.is_whitespace() || c.is_lowercase()), Some(1));
/// assert_eq!(s.find(|c: char| (c < 'o') && (c > 'a')), Some(4));
/// ``` /// ```
/// ///
/// Not finding the pattern: /// Not finding the pattern: