:relfileprefix: ../../../
[#7F239D42C987DE59FAE02E25A61D94E4E29B9D41]

= Function ref



== Synopsis

Declared in header `</boost/url/grammar/charset.hpp#L197[boost/url/grammar/charset.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
template<class CharSet>
constexpr
enable_if<is_charset<CharSet>::value && !std::is_same<CharSet, detail::charset_ref<CharSet>>::value, charset_ref<CharSet>>::type
ref(const CharSet& cs) noexcept;
----