InterfaceSwitched

InterfaceSwitched[<|size1->expr1,size2->expr2,…|>] is a construct that behaves as if it were expri when it is in an interface environment with width sizei.

InterfaceSwitched["param",<|key1->expr1,key2->expr2,…|>] behaves as if it were expri when the value of the interface parameter param corresponds to keyi.

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