Status: Valid
Owner: ----
CC: ronan.l...@gmail.com
Labels: Type-Defect Priority-Medium Assumptions
New issue 3585 by mrock...@gmail.com: Replace new assumptions handlers
http://code.google.com/p/sympy/issues/detail?id=3585
Currently the new assumptions system has handlers for each of the
predicates (positive, real, etc....) Each of these handlers have separate
static functions for all of the possible classes (Add, Mul, etc....) New
classes need to register themselves in the various handlers in
sympy/assumptions/handlers. This design is monolithic and, as new
assumptions grows, may become more cluttered.
Why was this design originally chosen? I'm not sufficiently familiar with
the computational core of assumptions to make any firm suggestions here.
What are some alternative organizations of the handler information?
1. Why not break down the handlers and move the methods into the Basic
classes. E.g. why not move the AskPositiveHandler.Mul function to a
Mul.ask_positive(assumptions) method?
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