String.join revisited (URGENT for 1.6)

[Juergen A. Erhard]

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>>>>> "Martijn" == Martijn Faassen <m.faassen at vet.uu.nl> writes:

    Martijn> Greg Ewing <greg at cosc.canterbury.ac.nz> wrote:

    >> Indeed - there seem to be just as many subjective arguments
    >> in favour of any of the alternatives, so the safest thing
    >> to do is leave the darn thing alone!

    >> I know we're promised that string.join will still be there,
    >> but if ''.join exists, people will start using it, and it
    >> won't be long before it's unremovable. Too Many Ways To Do It...

    Martijn> Agreed. So keeping string.join() would seem to be the
    Martijn> best alternative, definitely (or possibly making this a
    Martijn> builtin, so you don't have to import to use it, making it
    Martijn> import-equivalent with the new .split()).

    Martijn> a = "foo bar baz"  
    Martijn> b = a.split(" ")
    Martijn> assert a == sjoin(b, " ")

    Martijn> versus:

    Martijn> a = "foo bar baz"
    Martijn> b = a.split(" ")
    Martijn> assert a == " ".join(b)

    Martijn> Perhaps we should've left 'split' alone too. :)

I'm in favor of giving the mythical Sequence type (which I *hope* will
be created when the types/classes split will be healed (yes, healed))
a `join' method.

It would seem (at least to me) to be the nicest (and cleanest) design
to be able to do:

   "some string".split().join()

Bye, J

PS: I don't like `sjoin', by the way... looks much too ugly for such a
beautiful language as Python.

- -- 
Jürgen A. Erhard      eMail: jae at ilk.de      phone: (GERMANY) 0721 27326
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