Futures and Promises

Versions

[{“Name”:“C++11”,“GroupName”:null},{“Name”:“c++11”,“GroupName”:null},{“Name”:“C++14”,“GroupName”:null},{“Name”:“c++14”,“GroupName”:null},{“Name”:“C++17”,“GroupName”:null},{“Name”:“c++17”,“GroupName”:null}]

Introduction

Promises and Futures are used to ferry a single object from one thread to another.

A std::promise object is set by the thread which generates the result.

A std::future object can be used to retrieve a value, to test to see if a value is available, or to halt execution until the value is available.