boost::urls::grammar::lut_chars

A set of characters

Synopsis

Declared in <boost/url/grammar/lut_chars.hpp>

class lut_chars;

Member Functions

Name	Description
`lut_chars` [constructor]	Constructors
`operator()`	Return true if ch is in the character set.
`operator~`	Return a new character set which is the complement of another character set.

Friends

|===

Name	Description
`operator-`	Return a new character set by subtracting
`operator+`	Return the union of two character sets.

Description

The characters defined by instances of this set are provided upon construction. The constexpr implementation allows these to become compile-time constants.

Example

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


constexpr lut_chars vowel_chars = "AEIOU" "aeiou";

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