Implicit lists

Mark McEahern marklists at mceahern.com
Thu Jan 30 16:37:08 CET 2003


[Alex Martelli]
> for x in aslist(list):
>     whatever(x)
>
>
> How aslist is written is obviously quite secondary (at least,
> I _hope_ that's obvious...) -- all of its USES will be just as
> neat as the above example.

As a complement to what Alex wrote, I'd suggest writing unit tests that
document how you expect aslist to work with various types; e.g.,

import unittest

class test(unittest.TestCase):

  def test_stringlike(self):
    s = "foo"
    alist = [for x in aslist(s)]
    self.assertEquals(alist, [s])

...

etc.

// m

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