[Compose] 13. Lift into a Pointed Functor with of
We examine the of function we've seen on a few types and discover it's the Pointed interface.
Instead of doing constructor way of Task:
const useTask= (x) =>
new Task((rej, res) => res(x))
We can just say:
Task.of("something"); //Task("something")
Either.of("something"); // Either("something");
Box.of(); // Box(100)
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