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Message: [QUOTE="Dave Brueck, post: 1767987"] I disagree - there's a clear distinction between solving the problem and e.g. validating inputs to the problem solver, and having such checks as a statement is a good way to implement that distinction. That's why 'assert' as a statement makes sense to me too - it and validate are sort of "out of band" with getting the actual work done, but useful nonetheless. Whether or not a validate keyword is a good idea should be judged independently of your opinion of whether or not 'print' is a wart. It's definitely not "obvious library stuff" IMO - if nothing else, making you import a library just to validate parameters is goofy. It would be semi-tolerable (though less than ideal) as a builtin. -Dave [/QUOTE]