On Apr 21, 2006, at 8:36 AM, Greg Ewing wrote: > Guido van Rossum wrote: >> If I have some utterly dynamic >> code that comes up with a list of a million ints, and then I pass >> that >> as an argument to a function that requests the argument type is >> list[int], > > you wrap it in something that checks elements for intness > as you access them. [...]
I think it's important for code to fail early if type constraints aren't satisifed. The approach you suggest (wrapping the object) would cause a function with a badly typed argument to blow up part-way through executing, possibly at a position far-distant from the place where the type constraint was violated, and possibly after various side-effects have already taken place. -Edward _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
