The set of visible characters.

Synopsis

Defined in header <boost/url/grammar/vchars.hpp>

constexpr implementation-defined vchars;

Example

Character sets are used with rules and the functions find_if and find_if_not.

result< string_view > rv = parse( "JohnDoe", token_rule( vchars ) );

BNF

VCHAR       = 0x21-0x7E
            ; visible (printing) characters

Specification

See Also

find_if, find_if_not, parse, token_rule.

Convenience header <boost/url/grammar.hpp>