Antoon Pardon wrote:
Maybe I'm going to be pedantic here, but I fear that your code won't
work with matrices. The problem is that multiplication is not
commutative with matrices. This means that matrices have two divisions a right
and a left division. A far as I know the "/" operator usaly implements
the left division while solving is done by using a right division.
So your code will probably fail when applied to matrices.
You're right in your general point, but usually division between
matrices isn't defined at all because of this ambiguity. However the
general point can still exist between `solveLeft` and `solveRight`
functions which do something along the lines of a*b**-1 and a**-1*b. A
single `solve`, of course, would choose one of these, and syntactically
it might be quite reasonable to define matrix division that does one of
these and have a single `solve` function that accomplishes it.
Therefore, the general point about polymorphism still stands.
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