Proxy: Next Generation Polymorphism

on YouTube ↗30m

" summary

Proxy is an open-source header-only C++20 library that replaces inheritance with pointer-based polymorphic wrappers, using GC-like pointer-based lifetime management without a garbage collector. It offers make_proxy / make_proxy_shared, proxy view and weak proxy semantics, and a tiny fmt integration header. Benchmarks claim up to 300% faster on MSVC for small objects versus virtual functions and mixed results on ARM and Apple compilers. The library is deployed in Windows production since 2022 and lives at github.com/microsoft/proxy.

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" chapters (10)

1. 0:00Proxy library intro
2. 3:17Motivation for next-gen polymorphism
3. 6:10Library overview
4. 10:10Benchmarking performance
5. 13:02Core Proxy concepts
6. 18:03Proxy types defined
7. 22:03Creating Proxy objects
8. 24:17Dispatch prototypes and macros
9. 27:09Proxy 4 features
10. 28:57Live demo

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