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Identity function returns the same _value_. If it's only the same _type_, but the value is not the same, then it's an endomorphism. The function definitions lo
by epolanski 10mo ago
Identity function returns the same _value_.
If it's only the same _type_, but the value is not the same, then it's an endomorphism. The function definitions look the same `a -> a`.
string reversal, integer negation or toUpperCase are classical examples of endomorphisms.
Identity is a specific case of endomorphism.
- mrkeen 10mo agostring reversal, integer negation or toUpperCase are classical examples of functions which will not compile as `a -> a` The function which will compile as `a -> a` is the identity function.
- epolanski 10mo agoThat's correct, but I'm not sure how it relates to my comment as I said that `a -> a` is just an endomorphism. identity, uppercase or negate are all endomorphisms, with identity being the only generic one.