MonadsMonads All the code for this post are available here.https://github.com/santoshrajan/monadjs Consider the map functor from the last chapter. We could use map to iterate over two arrays adding each element of the first to the second. var result = [1, 2].map(function(i) { return [3, 4].map(function(j) { return i + j }) }) console.log(result) ==>> [ [ 4, 5 ], [ 5, 6 ] ] The type signature of the inne
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