In article <7xhbxtjxtn....@ruckus.brouhaha.com>, Paul Rubin <http://phr...@nospam.invalid> wrote: >Simon Forman <sajmik...@gmail.com> writes: >> >> (I like Haskell's Maybe, but saying A is better than B doesn't imply >> that B is therefore terrible.) > >I wouldn't say Python's None is terrible, but the programming style in >which None is used as a marker for "absent value" is genuinely a >source of bugs, requiring care when used. Often it's easy to just >avoid it and all the bugs that come with it. > >Haskell's Maybe type, ML's Option type, and various similar constructs >in other recently designed languages all are responses to the >shortcomings of None-like constructs in older languages. I'm not >going purely by that one guy's blog post, though I do think that post >was pretty good.
AFAICT, in order for Maybe and Option to work, you need to have some kind of static typing system. Am I missing something? -- Aahz (a...@pythoncraft.com) <*> http://www.pythoncraft.com/ "as long as we like the same operating system, things are cool." --piranha -- http://mail.python.org/mailman/listinfo/python-list
