Contravariant functors

added by DotNetKicks
9/8/2021 2:13:42 PM

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A more exotic kind of universal abstraction. This article series is part of a larger series of articles about functors, applicatives, and other mappable containers. So far in the article series, you've seen examples of mappable containers that map in the same direction of projections, so to speak. Let's unpack that.


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