Possibly Pythonic Tail Call Optimization (TCO/TRE)

Mark Lawrence breamoreboy at yahoo.co.uk
Wed Jul 15 01:40:14 CEST 2015


On 13/07/2015 23:46, Terry Reedy wrote:
>
> Optimizing specific tail calls is tricker.  For one thing, calls to a
> recursion-replacement function, such as recur, add a stack frame that
> must also be popped. A CPython bytecode manimpuation solution was given
> years ago as a recipe on the ActiveState Python Cookbook site.  MacroPy
> at pypi.python.org "provides a mechanism for user-defined functions
> (macros) to perform transformations on the abstract syntax tree(AST) of
> Python code at module import time".  Among many included examples, it
> has a tco decorator.
>

A direct link https://github.com/lihaoyi/macropy#tail-call-optimization 
for anybody who is interested.

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence



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