pub enum WordBoundary {
Unicode,
UnicodeNegate,
Ascii,
AsciiNegate,
}The high-level intermediate representation for a word-boundary assertion.
A matching word boundary assertion is always zero-length.
Match a Unicode-aware word boundary. That is, this matches a position
where the left adjacent character and right adjacent character
correspond to a word and non-word or a non-word and word character.
Match a Unicode-aware negation of a word boundary.
Match an ASCII-only word boundary. That is, this matches a position
where the left adjacent character and right adjacent character
correspond to a word and non-word or a non-word and word character.
Match an ASCII-only negation of a word boundary.
Returns true if and only if this word boundary assertion is negated.
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=.