Steven D'Aprano wrote: > There are bad programmers in every language, but RPL conditional > blocks aren't the cause of them. Once you learn how RPL works, if > statements work consistently and obviously (although maybe not to > programmers who don't get RP notation).
ACK. What made me anwswer wasn't RPL (after all I use an RPN calculator ;) ), but the statement that it were "more logic" than Python's "classic" infix logic. > In RPL, there are no expressions. RPL programs are constructed > from data and commands, not expressions. So you shouldn't think of > > <garbage can full> if <fetch out garbage> [else <don't>] > > as an expression. Think of it as a block, equivalent to the > Python: > > if garbage_can_full: > fetch > out > garbage > else: > don't > > except that you can write it as a single line. Newlines in RPL are > just another sort of whitespace, with no special significance. > > If the else clause is missing, then nothing is executed and > processing simply continues past the end of the block. That made it clear, thanks. Regards, Björn -- BOFH excuse #439: Hot Java has gone cold -- http://mail.python.org/mailman/listinfo/python-list
