Aahz wrote:
Not quite. One critical difference between dbm and dicts
is the need to remember to "save" changes by setting the
key's valud again.
Could you give an example of this? I'm not sure I
understand what you're saying.
Well, you're more likely to hit this by wrapping dbm with shelve (because
it's a little more obvious when you're using pickle directly), but
consider this:
d = anydbm.open(DB_NAME, "c")
x = MyClass()
d['foo'] = x
x.bar = 123
Your dbm does NOT have the change to x.bar recorded, you must do this
again:
d['foo'] = x
With a dict, you have Python's reference semantics.
Ah, that makes sense...fallout of the "dbm only does string
keys/values". It try to adhere to the "only use strings", so I'm
more cognizant of when I martial complex data-types in or out of
those strings. But I can see where it could bite a person.
Thanks,
-tkc
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