[XML-SIG] DOM Nodes: Identity test
Paul Prescod
paul@prescod.net
Wed, 24 Mar 1999 10:22:13 -0600
"Andrew M. Kuchling" wrote:
>
> I've been wondering about that myself. We don't want to
> overload __cmp__ to do this, because Python comparisions are usually
> done by value;
We could agree that the only by-value check that makes sense is the
identity check. This is the same as saying that the location of a node in
the tree is part of its value.
I note that the default "==" behaviour for new Python classes is to use
the identity so there are probably dozens of Python classes in the
standard distribution with this behaviour.
>>> class A:
... pass
...
>>> A()==A()
0
--
Paul Prescod - ISOGEN Consulting Engineer speaking for only himself
http://itrc.uwaterloo.ca/~papresco
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