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Porting Open3D to Python without writing a LoC

Porting Open3D to Python without writing a LoC

by fthiesen·Apr 24, 2026·2 points·0 comments
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AI Analysis

●●●BangerWizardryBig BrainZero to One

C++26 reflection cuts 25k binding lines to 71, 30× faster list ingestion than pybind11.

Strengths
  • •Compile-time reflection eliminates manual .def() boilerplate and trampoline classes entirely.
  • •30-35× faster on list-to-std::vector ingestion with verified benchmarks across 10K-1M points.
  • •Topological sort resolves dependencies automatically, nested types get qualified correctly.
Weaknesses
  • •Requires C++26 compiler support, limiting adoption to cutting-edge toolchains only.
  • •Niche audience—only matters if you're maintaining large C++ libraries with Python bindings.
Target Audience

C++ library maintainers, compiler engineers

Similar To

pybind11 · pybind11_mkdoc · cppyy

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