[PEAK] Rules clarification

[Sergey Schetinin]

I've noticed that "when" function accepts anything as it's second
parameter (not just tuples), what does this declaration would mean
then (maybe nothing and it should throw an exception?)

>>> from peak.rules import *
>>> @abstract
... def test(foo):
...     pass
...
>>> @when(test, int) # <--------- this is what I'm talking about
... def test_int(foo):
...     print foo
...

I'd think non tuples would be used to match the first argument, but
that's not true:

>>> test(0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "<stdin>", line 1, in test
  File "<stdin>", line 1, in test
  File "c:\python25\lib\site-packages\peak_rules-0.3-py2.5.egg\peak\rules\core.p
y", line 547, in callback
    return f(*args)
  File "c:\python25\lib\site-packages\peak_rules-0.3-py2.5.egg\peak\rules\core.p
y", line 214, in __call__
    raise self.__class__(*self.args+(args,kw))  # XXX
peak.rules.core.NoApplicableMethods: ((0,), {})
>>>




-- 
Best Regards,
Sergey Schetinin

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