Updates:
Cc: [email protected] [email protected]
Comment #38 on issue 1337 by asmeurer: Refactor find() and replace()
http://code.google.com/p/sympy/issues/detail?id=1337
I agree that the documentation needs to be better. It should be clear on
the list of things in the replace docstring what they do, i.e., just
3.1. func -> func
obj.replace(lambda expr: ..., lambda expr: …)
doesn't make it clear exactly what it does (in particular, it isn't clear
that the first function is evaluated as a boolean). And the examples
should be referenced in a way that makes it clearer what example
corresponds to what combination.
I don't think all the combinations make sense. Like you can't just put a
type in an arbitrary place (you can only put a type where a type was), and
you can't put an expr where a type was (unless you had issue 2006). But
you should be able to do func -> expr (in fact, the given example doctest
for that would make more sense to do it that way).
find() needs a way better docstring, that actually explains what all the
options do and has doctests.
Ronan and/or Mateusz, do you want to work on this? Otherwise, it will be
postponed until after the release.
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