Codectionary / Developer documentation / C++

C++ std::variant

C++ reference for c++ std::variant.

Syntax

#include <variant>
std::variant<int, std::string> value = "ready";

Examples

C++ std::variant example

A focused example you can adapt while practising.

#include <variant>
std::variant<int, std::string> value = "ready";

Best practices

  • Start with the smallest working example, then adapt it to your project.
  • Use the language’s standard library and idioms before introducing extra dependencies.

At a glance

Purpose
Systems and general-purpose software
File extension
.cpp · .hpp
Runs in
Compiled native applications
Usually used with
Compiler and standard library

Specifications & further reading

Related C++ documentation

C++ Vector & Map
std::vector is a resizable sequence container. std::map stores key-value pairs ordered by key. Both are available through standard-library headers.C++ std::array
C++ reference for c++ std::array.C++ std::vector
C++ reference for c++ std::vector.C++ std::map
C++ reference for c++ std::map.