boost::urls::grammar::is_charset
Alias for std::true_type
if T satisfies CharSet.
Synopsis
Declared in <boost/url/grammar/charset.hpp>
template<class T>
using is_charset = /* implementation-defined */::is_charset<T>;
Description
This metafunction determines if the type T
meets these requirements of CharSet:
-
An instance of
T
is invocable with this equivalent function signature:
bool T::operator()( char ) const noexcept;
Template Parameters
Name | Description |
---|---|
T |
the type to check. |
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