Module nom::lib::std::str::pattern

🔬 This is a nightly-only experimental API. (pattern)

API not fully fleshed out and ready to be stabilized

The string Pattern API.

The Pattern API provides a generic mechanism for using different pattern types when searching through a string.

For more details, see the traits Pattern, Searcher, ReverseSearcher, and DoubleEndedSearcher.

Although this API is unstable, it is exposed via stable APIs on the str type.

Examples

Pattern is implemented in the stable API for &str, [char], slices of [char], and functions and closures implementing FnMut(char) -> bool.

let s = "Can you find a needle in a haystack?";

// &str pattern
assert_eq!(s.find("you"), Some(4));
// char pattern
assert_eq!(s.find('n'), Some(2));
// slice of chars pattern
assert_eq!(s.find(&['a', 'e', 'i', 'o', 'u'][..]), Some(1));
// closure pattern
assert_eq!(s.find(|c: char| c.is_ascii_punctuation()), Some(35));

Structs

CharPredicateSearcher	Experimental Associated type for <F as Pattern<'a>>::Searcher.
CharSearcher	Experimental Associated type for <char as Pattern<'a>>::Searcher.
CharSliceSearcher	Experimental Associated type for <&[char] as Pattern<'a>>::Searcher.
StrSearcher	Experimental Associated type for <&str as Pattern<'a>>::Searcher.

Enums

SearchStep

Experimental Result of calling Searcher::next() or ReverseSearcher::next_back().

Traits

DoubleEndedSearcher	Experimental A marker trait to express that a ReverseSearcher can be used for a DoubleEndedIterator implementation.
Pattern	Experimental A string pattern.
ReverseSearcher	Experimental A reverse searcher for a string pattern.
Searcher	Experimental A searcher for a string pattern.