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Mon Nov 7 19:39:16 EST 2011

Lifting & subclassing

Is lifting the same as subclassing?

I.e. in OO, a derived class can call it's superclass' methods, which
is really similar to lifting an operation over a larger type,
i.e. what 'return' ('pure') does.

The difference is that in the OO case it happens automatically, while
in the (typed) FP case it uses an explicit conversion.




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