Invariant functors

added by DotNetKicks
8/1/2022 4:03:27 PM

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Containers that support mapping isomorphic values. This article series is part of a larger series of articles about functors, applicatives, and other mappable containers. So far, you've seen examples of both co- and contravariant functors, including profunctors. You've also seen a few examples of monomorphic functors - mappable containers where there's no variance at all.


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