On Jul 13, 3:30 am, "Aaron S. Meurer" <[email protected]> wrote:
> think that powsimp() could benefit from this? When I rewrote it
> several weeks ago, I added a switch "combine" to control the two
> different combining methods (see the docstring for more info). So
> basically, you can do combine='exp' to only combine exponentials,
> combine='base' to only combine bases, and combine='all' (the default)
> to do both. I think we could probably use your function to do
> exp=True and base=True. Also, I think my dsolve hints function that I
or you could add the option 'power' which does both base and exp.
> Maybe you should also add a default_dict=True that takes in a
> dictionary of default options, incase there is a function that uses
> **kwargs instead of default arguments.
I hardly use these sorts of things so I would have to defer to those
with more experience.
> It would also allow default
> options to be False instead of True, though I don't know how much that
> would complicate the rules that you have outlined below.
You have the option in the switch manager of giving it a default of
False; maybe I am misunderstanding what you mean.
>
> On the two lines below, I assume you mean "if one or more switches
> have been set to True and none are set to False". It is a little
> ambiguous the way you have it.
Yes, I could have said "If all given switches are True then the rest
will be set to False and if all given are False then those that have
not been given will be set to True."
>
> > -if one or more switches have been set to True then set the rest
> > to False;
> > -if one or more switches have been set to False then set the rest
> > to True.
> > """
One thing I was thinking about along the lines of "explicit is better
than implicit" is that this becomes a little more implicit in terms of
what is on and what is off and a clear method of indicating switches
logic is important. e.g. in the docstring we might put something like:
Hint options:
- basic
- log
- mul
- multinomial
- power_exp
- power_base
F complex
F func
F trig
key:
(-) indicates options to select as being True or False and those that
are unselected will have the opposite sense (e.g. if log=True then
ONLY log will be True)
(F) indicates options that are off unless explicitly set to True (i.e.
expand(log=False) will only turn on the (-) hints, not the (F) hints.
Something like that...one issue that isn't resolved for me is how to
handle the (F) args: if you do expand(func=True) should that turn all
the (-) ones off? The way the routine works right now, those that are
not in the (F) set do not affect the (-) set. I guess to only use the
func expansion you would have to do: expand(default=off, func=True)
Open to ideas,
/c
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