Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::xpressive::regex_constants::match_flag_type
// In header: <boost/xpressive/regex_constants.hpp> enum match_flag_type { match_default = = 0, match_not_bol = = 1 << 1, match_not_eol = = 1 << 2, match_not_bow = = 1 << 3, match_not_eow = = 1 << 4, match_any = = 1 << 7, match_not_null = = 1 << 8, match_continuous = = 1 << 10, match_partial = = 1 << 11, match_prev_avail = = 1 << 12, format_default = = 0, format_sed = = 1 << 13, format_perl = = 1 << 14, format_no_copy = = 1 << 15, format_first_only = = 1 << 16, format_literal = = 1 << 17, format_all = = 1 << 18 };
Flags used to customize the behavior of the regex algorithms
match_defaultSpecifies that matching of regular expressions proceeds without any modification of the normal rules used in ECMA-262, ECMAScript Language Specification, Chapter 15 part 10, RegExp (Regular Expression) Objects (FWD.1)
match_not_bolSpecifies that the expression "^" should not be matched against the sub-sequence [first,first).
match_not_eolSpecifies that the expression "\$" should not be matched against the sub-sequence [last,last).
match_not_bowSpecifies that the expression "\\b" should not be matched against the sub-sequence [first,first).
match_not_eowSpecifies that the expression "\\b" should not be matched against the sub-sequence [last,last).
match_anySpecifies that if more than one match is possible then any match is an acceptable result.
match_not_nullSpecifies that the expression can not be matched against an empty sequence.
match_continuousSpecifies that the expression must match a sub-sequence that begins at first.
match_partialSpecifies that if no match can be found, then it is acceptable to return a match [from, last) where from != last, if there exists some sequence of characters [from,to) of which [from,last) is a prefix, and which would result in a full match.
match_prev_availSpecifies that <ndash></ndash>first is a valid iterator position, when this flag is set then the flags match_not_bol and match_not_bow are ignored by the regular expression algorithms (RE.7) and iterators (RE.8).
format_defaultSpecifies that when a regular expression match is to be replaced by a new string, that the new string is constructed using the rules used by the ECMAScript replace function in ECMA-262, ECMAScript Language Specification, Chapter 15 part 5.4.11 String.prototype.replace. (FWD.1). In addition during search and replace operations then all non-overlapping occurrences of the regular expression are located and replaced, and sections of the input that did not match the expression, are copied unchanged to the output string.
format_sedSpecifies that when a regular expression match is to be replaced by a new string, that the new string is constructed using the rules used by the Unix sed utility in IEEE Std 1003.1-2001, Portable Operating SystemInterface (POSIX), Shells and Utilities.
format_perlSpecifies that when a regular expression match is to be replaced by a new string, that the new string is constructed using an implementation defined superset of the rules used by the ECMAScript replace function in ECMA-262, ECMAScript Language Specification, Chapter 15 part 5.4.11 String.prototype.replace (FWD.1).
format_no_copyWhen specified during a search and replace operation, then sections of the character container sequence being searched that do match the regular expression, are not copied to the output string.
format_first_onlyWhen specified during a search and replace operation, then only the first occurrence of the regular expression is replaced.
format_literalTreat the format string as a literal.
format_allSpecifies that all syntax extensions are enabled, including conditional (?ddexpression1:expression2) replacements.