A set of characters

Synopsis

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

class lut_chars;

Member Functions

Name

Description

find_if

find_if_not

lut_chars [constructor]

Constructor

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 the union of two character sets.

operator-

Return a new character set by subtracting

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 ) );

See Also

find_if , find_if_not , parse , token_rule .