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added examples of closures for str::find #45349

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merged 2 commits into from
Oct 19, 2017
Merged

added examples of closures for str::find #45349

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da7aab6
added examples of closures
pvdrz Oct 18, 2017
2a889eb
added non trivial examples of closures for str::find
pvdrz Oct 18, 2017
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4 changes: 3 additions & 1 deletion src/liballoc/str.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -959,13 +959,15 @@ impl str {
/// 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";
///
/// assert_eq!(s.find(char::is_whitespace), Some(5));
/// 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:
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