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andyhd/maybe-monad.js

Created January 16, 2012 01:02
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Maybe monad in Javascript
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maybe-monad.js
function maybe(value) {
var obj = null;
function isEmpty() { return value === undefined || value === null }
function nonEmpty() { return !isEmpty() }
obj = {
map: function (f) { return isEmpty() ? obj : maybe(f(value)) },
getOrElse: function (n) { return isEmpty() ? n : value },
isEmpty: isEmpty,
nonEmpty: nonEmpty
}
return obj;
}
@dan-weaver
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I think this is just a functor no?

@nitindhar7
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@andyhd just created something similar to this for node called Giftbox here. Would love to hear your thoughts/feedback! Also motivated by Scala :)

@jhegedus42
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@Muzietto, lol ! how true :)

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