C++ 20 (2a) New Features - Generator Expressions

The video tutorial explains the concept of generators, which are functions that return a stream of values while maintaining their state. Generators are lazy, meaning they only produce values when requested. The tutorial delves into the implementation details of generators, including the use of promise and handle types, and the role of coroutines. It highlights the complexity involved in writing a generator from scratch and introduces the C Coral library as a tool to simplify the process. The library allows for higher-level abstractions and easier integration of generators into code, making them more production-ready.

Describe the role of the promise in a generator.

How does the C Coral library simplify the use of generators?