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 -- https://mail.python.org/mailman/listinfo/python-list
