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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