Comment #17 on issue 1798 by ronan.l...@gmail.com: Refactoring Basic
http://code.google.com/p/sympy/issues/detail?id=1798
However, if we take seriously the idea that "Basic doesn't do math" I
think the
following methods should be moved to Expr as well:
__lt__, __gt__, __le__, __ge__ => currently these represent mathematical
inequalities, move to Expr
I've just transferred it (and pushed the commit to github) and,
surprisingly, it
works without any other change. There's more to do on that subject though,
in order
to consistently follow the Python 3 model.
is_hypergeometric: seems pretty math-ish. Will this go away once the new
assumptions are in place?
I haven't touched the is_* methods, assuming that they'll be completely
refactored
under the new system.
has_piecewise: same
This should be refactored using pattern matching, so I didn't touch it
either.
as_poly: all the other as_foo methods are in Expr, why not this?
I didn't move it because I was waiting for the new polynomials to be merged
in. Now,
I think it should probably be refactored away, not moved.
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