restinio/0.6-api/variant_8hpp_source.html

 /*
     restinio
 */

 /*!
     Adoption for std::variant (c++17).

     @since v.0.4.8
 */

 #pragma once

 #if defined(RESTINIO_EXTERNAL_VARIANT_LITE)
     #include <nonstd/variant.hpp>
 #else
     #include "third_party/variant-lite/variant.hpp"
 #endif

 namespace restinio
 {
     template< typename... Types >
     using variant_t = nonstd::variant< Types... >;

     using nonstd::holds_alternative;
     using nonstd::get;
     using nonstd::get_if;
     using nonstd::visit;

 } /* namespace restinio */
nonstd
Definition: expected.hpp:132

nonstd::variants::variant::variant_ALIGN_AS
typedef variant_ALIGN_AS(max_type) align_as_type

restinio::opt_value
std::enable_if< std::is_same< Parameter_Container, query_string_params_t >::value||std::is_same< Parameter_Container, router::route_params_t >::value, optional_t< Value_Type > >::type opt_value(const Parameter_Container &params, string_view_t key)
Gets the value of a parameter specified by key wrapped in optional_t<Value_Type> if parameter exists ...
Definition: value_or.hpp:64