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This is an older version of Boost and was released in 2024. The current version is 1.92.0.

grammar::vchars

grammar::vchars

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.

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

BNF

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

Specification

B.1. Core Rules (rfc5234)

See Also

find_if, find_if_not, parse, token_rule.

Convenience header <boost/url/grammar.hpp>