Trait core::str::pattern::Pattern
[−]
[src]
pub trait Pattern<'a>: Sized {
type Searcher: Searcher<'a>;
fn into_searcher(self, haystack: &'a str) -> Self::Searcher;
fn is_contained_in(self, haystack: &'a str) -> bool { ... }
fn is_prefix_of(self, haystack: &'a str) -> bool { ... }
fn is_suffix_of(self, haystack: &'a str) -> bool where Self::Searcher: ReverseSearcher<'a> { ... }
}
A string pattern.
A Pattern<'a>
`Pattern<'a>expresses that the implementing type can be used as a string pattern for searching in a
` expresses that the implementing type
can be used as a string pattern for searching in a &'a str
`&'a str`.
For example, both 'a'
`'a'and
` and "aa"
`"aa"are patterns that would match at index
` are patterns that
would match at index 1
`1in the string
` in the string "baaaab"
`"baaaab"`.
The trait itself acts as a builder for an associated
Searcher
`Searcher` type, which does the actual work of finding
occurrences of the pattern in a string.
Associated Types
Required Methods
fn into_searcher(self, haystack: &'a str) -> Self::Searcher
Constructs the associated searcher from
self
`selfand the
` and the haystack
`haystack` to search in.
Provided Methods
fn is_contained_in(self, haystack: &'a str) -> bool
Checks whether the pattern matches anywhere in the haystack
fn is_prefix_of(self, haystack: &'a str) -> bool
Checks whether the pattern matches at the front of the haystack
fn is_suffix_of(self, haystack: &'a str) -> bool where Self::Searcher: ReverseSearcher<'a>
Checks whether the pattern matches at the back of the haystack