What We’ve Been Awaiting For? - How to Build a C++ Coroutine Type
summary
Shows how to build a concrete C++ coroutine type that actually downloads web pages using libcurl multi API, implements a tiny scheduler that tracks running vs blocked coroutine counts, and exposes promise-style combinators (all/any/race) plus retries and optional results. Code materializes lazy ranges to start all fetches, stores results in the promise frame, and resumes coroutines from the multi-handle loop; the demo fetches pages, extracts URLs with CTRE, downloads resources, and the system successfully joins and returns the vector of contents.
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chapters (16)
- 0:00Introduction
- 1:05JavaScript coroutines
- 5:06C++ coroutines motivation
- 8:03C++ coroutine basics
- 13:07Coroutine mechanics
- 22:26Suspension points
- 25:42Promise type
- 31:47Coroutine resumption
- 35:21Scheduler integration
- 41:40Lazy perform implementation
- 44:10libcurl async API
- 45:37Fetch function
- 47:29Promise composition
- 51:20Search engine demo
- 53:44Library overview
- 54:05Q&A
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