...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
The set of hexadecimal digits.
Defined in header <boost/url/grammar/hexdig_chars.hpp>
constexpr implementation-defined hexdig_chars;
Character sets are used with rules and the functions find_if
and find_if_not
.
result< string_view > rv = parse( "8086FC19", token_rule( hexdig_chars ) );
HEXDIG = DIGIT / "A" / "B" / "C" / "D" / "E" / "F" / "a" / "b" / "c" / "d" / "e" / "f"
The RFCs are inconsistent on the case sensitivity of hexadecimal digits. Existing uses suggest case-insensitivity is a de-facto standard.
find_if
,
find_if_not
,
hexdig_value
, parse
, token_rule
.
Convenience header <boost/url/grammar.hpp>