Possibly Pythonic Tail Call Optimization (TCO/TRE)

Mark Lawrence breamoreboy at yahoo.co.uk
Wed Jul 15 02:14:33 CEST 2015


On 15/07/2015 00:40, Mark Lawrence wrote:
> 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.
>

And I've just stumbled across this https://github.com/baruchel/tco which 
was only put up two days ago.

-- 
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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