[PEP] matching and mismatching

[Mark McEahern]

[Luke Kenneth Casson]
> the idea: a function/operator similar to map and reduce _or_ a keyword
> similar to "in", such that:
> 
> for x in ([1,3,2,5,9] matching lambda x:x > 2):
> 	print x
> will output:
> 3
> 5
> 9

What's wrong with using list comprehensions?  E.g.,

>>> nums = range(1, 11)
>>> odds = [x for x in nums if x % 2]
>>> evens = [x for x in nums if not (x % 2)]
>>> nums
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> odds
[1, 3, 5, 7, 9]
>>> evens
[2, 4, 6, 8, 10]

Cheers,

// mark