Practical C++20 Modules and the future of tooling around C++ Modules
summary
Shows concrete migration steps: replace includes with header units then convert to named module interfaces and finally split into module partitions; uses MSVC (post‑16.6 prerelease), VS Code and Python 3. Header units cut a demo compile from ~1.2s to ~0.1s, partitions speed rebuilds by building only changed partitions. Demonstrates applying header units to ImGui, and persisting compiler semantics as an IFC format to generate a Python ctypes FFI for SDL, IFCs are portable and will be open source.
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chapters (7)
- 0:00Introduction to C++ modules
- 1:32C++20 module types
- 7:03Header units migration
- 13:12Named module units
- 17:37Using module partitions
- 22:38Real-world project application
- 27:59Tooling and future outlook
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