Created
April 14, 2020 17:55
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Functors Monoid
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| // a -> a (could return whatever) | |
| const f = n => n + 1; | |
| // a -> M a | |
| const g = x => Identity(x); | |
| // Composition gives us Identity(2) | |
| g(1).map(f) | |
| // We could extract the composition here too: | |
| const op = (f1, f2) => compose(map(f2), f1); | |
| // Composition gives us Identity(2) | |
| op(g, f)(1) |
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