mysql::strconv::Is_out_str Concept Reference

True if Test is an Output String Wrapper, i.e., derived from Out_str_base. More...

#include <out_str.h>

Concept definition

template<class Test>
concept mysql::strconv::Is_out_str = 
    std::derived_from<Test, Out_str_base> &&  
    requires(Test test, std::size_t new_size) {
      { test.initial_capacity() } -> std::same_as<std::size_t>;
      { test.size() } -> std::same_as<std::size_t>;
      {
        test.resize(new_size)
        } -> mysql::meta::Is_either<void, mysql::utils::Return_status>;
      { test.data() } -> std::same_as<char *>;
      { test.udata() } -> std::same_as<unsigned char *>;
      { test.bdata() } -> std::same_as<std::byte *>;
      { Test::resize_policy } -> std::convertible_to<Resize_policy>;
    }

Detailed Description

True if Test is an Output String Wrapper, i.e., derived from Out_str_base.