useless brainstorming

state.py

"""
Just some brainstorming. I don't really have a good repo for this.

So I've been thinking about state. The total state of an application
consists of the code, the data, and that's about it. There's external
state too. But everything, I dunno... should be *managed*, I guess. At
one level, that's the job of an OS. On the other hand, we're talking
potentially many machines.

This sounds like something plan9 would have already solved. That's OK.


>>> s = State()
>>> s.add_change(s.current_state.__setitem__, "test", "bar")
>>> s.current_state['test']
'bar'
>>> s.add_change(s.current_state.__delitem__, "test")
>>> repr(s.current_state.get("test"))
'None'
>>> len(s.changes)
2

Well this seems pretty useless now.

"""


def _main():
    import doctest
    doctest.testmod()


class State(object):
    def __init__(self):
        self.current_state = {}
        self.changes = []

    def add_change(self, f, *args):
        self.changes.append((f, args))
        f(*args)


if __name__ == "__main__": _main()