![]() Uses the standard formatting rules to replace matches (those used by ECMAScript's replace method).**. ( match_not_bol and match_not_bow are ignored) One or more characters exist before the first one. Sub-sequences must begin at the first character to match. The expression must match a sub-sequence that begins at the first character. The escape sequence "\b" does not match as an end-of-word.Īny match is acceptable if more than one match is possible. The escape sequence "\b" does not match as a beginning-of-word. The last character is not considered an end of line ( "$" does not match). ![]() ![]() The first character is not considered a beginning of line ( "^" does not match). Used as a parameter to functions regex_match, regex_search and regex_replace and also as a parameter to the constructors of regex_iterator and regex_token_iterator. The regular expression follows one of these grammars.Īt most one of these six grammar flags can be set for the bitmask to have a valid value. Matching efficiency is preferred over efficiency constructing regex objects.Ĭharacter ranges, like "", are affected by locale. The match_results structure will not contain sub-expression matches. Sub-expressions are not considered to be marked. Regular expressions match without regard to case.
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