One problem with trying to mix RPN with in-fix is that some operators, like - can be either a unary or binary operation in the in-fix notations, distinguished by context. In RPN you have lost that context.
is x y - - the same as -(x-y) or is it x-(-y) ? or is it waiting for another operator and be x ?? (-(-y)) or is it expecting a previous operand and is ?? - (x-y) (same with +) Typical RPN systems get around this by having unary - be a different symbol/key that binary - -- Richard Damon _______________________________________________ Python-ideas mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-ideas.python.org/ Message archived at https://mail.python.org/archives/list/[email protected]/message/LX5T33N6IU6IMDKXU4KQMA2RP6U627CG/ Code of Conduct: http://python.org/psf/codeofconduct/
