Le jeudi 22 mars 2012 à 22:52 +0100, [email protected] a écrit : > > I think there should still be a way to create unevaluated MatMul's of > > ImmutableMatrices but that it should not be default. We've had far more > > requests recently for default evaluation than otherwise. > > Something like this seems good enough: > In [9]: Add(1,2,evaluate=False) > Out[9]: 1 + 2 > No, evaluate=False is a major source of pain. What you get out of it is a malformed object that breaks lots of expectations. For instance, try type(_9)(*_9.args)...
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