convert an enum to another type of enum

Question

I have an enum of for example \'Gender\' (Male =0 , Female =1) and I have another enum from a service which has its own Gender enum (Male =0

Answer 1

To be thorough I normally create a pair of functions, one that takes Enum 1 and returns Enum 2 and another that takes Enum 2 and returns Enum 1. Each consists of a case statement mapping inputs to outputs and the default case throws an exception with a message complaining about an unexpected value.

In this particular case you could take advantage of the fact that the integer values of Male and Female are the same, but I'd avoid that as it's hackish and subject to breakage if either enum changes in the future.