type 'a t
= 'a option
A parametric type representing any OCaml value.
val return : 'a ‑> 'a t
Creates a constant value in this monad.
val (>>=) : 'a t ‑> ('a ‑> 'b t) ‑> 'b t
Waits for the conclusion of the monad in the left, and then, apply the unwrapped value to the function in the right.