Paul McGuire wrote:
> "Dasn" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
>>
>> Hi, there.
>>
>> 'lines' is a large list of strings each of which is seperated by '\t'
>> >>> lines = ['bla\tbla\tblah', 'bh\tb\tb', ... ]
>>
>> I wanna split each string into a list. For speed, using map() instead
>> of 'for' loop.
>
> Try this. Not sure how it stacks up for speed, though. (As others have
> suggested, if 'for' loop is giving you speed heartburn, use a list
> comprehension.)
>
> In this case, splitUsing is called only once, to create the embedded
> function tmp. tmp is the function that split will call once per list item,
> using whatever characters were specified in the call to splitUsing.
>
> -- Paul
>
>
>
> data = [
> "sldjflsdfj\tlsjdlj\tlkjsdlkfj",
> "lsdjflsjd\tlsjdlfdj\tlskjdflkj",
> "lskdjfl\tlskdjflj\tlskdlfkjsd",
> ]
>
> def splitUsing(chars):
> def tmp(s):
> return s.split(chars)
> return tmp
>
> for d in map(splitUsing('\t'), data):
> print d
And why is this better than
map(lambda t: t.split('\t'), data)
?
Georg
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