Who's minister of propaganda this week?

Joshua Marshall jmarshal at mathworks.com
Wed Mar 14 18:49:08 CET 2001


Darren New <dnew at san.rr.com> wrote:
> Phlip wrote:
>> Ruby trumps Python in the simple matter of
>> closures (imagine my shock when I discovered Python didn't have them). 

> Can someone summarize the important difference between closures and object
> instances? Other than convenience, I mean, it would seem that something like

> class yadda:
>   def __init__(self, a, b):
>     self.a = a ; self.b = b
>   def __call__(self, x, y):
>     return (self.a + x * self.b * y)

> would seem to be quite a lot like a closure with a and b bound and x and y
> free?

Yup.  Object instances and closures are very similar.  Scoping issues
aside, you can think of closures as classless instances with only one
method.



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