Is coffeescript `? .` a monad operator?

Question

I just read about Maybe Monad in Haskell and it looks like the role of Coffeescript ?.. Is the operator ?.considered a monad or are these just two different ways to do the same thing?

In Haskell, you write

a >>= b >>= c

In coffeescript you write

a?.b?.c

Answer 1

One operator cannot be a monad just as an engine cannot be a car. Short-circuited behavior is a Maybe property and (Maybe, return, (>>=))turns out to be a monad.

, , CoffeeScript, , ?. bind. Haskell, .

Answer 2

( → =) Maybe, . , return bind ( return, fmap join) .

. . .

Answer 3

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