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Return the union of two character sets.
Defined in header <boost/url/grammar/lut_chars.hpp>
friend 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 lut_chars alpha_chars( "ABCDEFGHIJKLMNOPQRSTUVWXYZ" "abcdefghijklmnopqrstuvwxyz"); constexpr lut_chars alnum_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>