restinio/0.7-api/expected_8hpp_source.html

 /*
     restinio
 */

 /*!
     Adoption for std::expected (c++20).

     @since v.0.6.1
 */

 #pragma once

 #include <nonstd/expected.hpp>

 namespace restinio
 {
     template< typename T, typename E >
     using expected_t = nonstd::expected<T, E>;

     using nonstd::make_unexpected;

 } /* namespace restinio */
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, std::optional< Value_Type > >::type opt_value(const Parameter_Container &params, string_view_t key)
Gets the value of a parameter specified by key wrapped in std::optional<Value_Type> if parameter exis...
Definition: value_or.hpp:64