Boost C++ Libraries

Determine if T can be treated like a string during conversions.

Synopsis

Defined in header <boost/json/conversion.hpp>

template<
    class T>
struct is_string_like

Description

Provides the member constant value that is equal to true, if T is convertible to string_view. Otherwise, value is equal to false.

Users can specialize the trait for their own types if they don't want them to be treated like strings. For example:

namespace boost {
namespace json {

template <>
struct is_string_like<your::string> : std::false_type
{ };

} // namespace boost
} // namespace json

Types satisfying the trait

string, string_view, std::string, std::string_view.

See Also

value_from, value_to

Convenience header <boost/json.hpp>