Published at LXer:

A new Ruby 1.9.3 implementation has appeared in the form of Topaz, announced by its creator Alex Gaynor. Topaz's design goals were simplicity and performance and it was written on top of the RPython translation toolchain, building on the work of the PyPy developers. RPython is a restricted implementation of Python that was developed by the PyPy developers as a route to translating RPython programs into LLVM code. Topaz inherits a high performance garbage collector and "state of the art" just-in-time compiler from RPython, making for a fast Ruby implementation.

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