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Return the union of two character sets.
Defined in header <boost/url/grammar/lut_chars.hpp>
constexpr lut_chars operator+( lut_chars const& cs0, lut_chars const& cs1);
This function returns a new character set which contains all of the characters
in cs0
as well as all of
the characters in cs
.
This creates a character set which includes all letters and numbers
constexpr [link url.ref.boost__urls__grammar__lut_chars.lut_chars `lut_chars`] [link url.ref.boost__urls__grammar__alpha_chars `alpha_chars`]( "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz" ); constexpr [link url.ref.boost__urls__grammar__lut_chars.lut_chars `lut_chars`] [link url.ref.boost__urls__grammar__alnum_chars `alnum_chars`] = [link url.ref.boost__urls__grammar__alpha_chars `alpha_chars`] + "0123456789" ;
Constant.
The new character set.
Name |
Description |
---|---|
|
A character to join |
|
A character to join |
Convenience header <boost/url/grammar.hpp>