Pipe first as a syntax transform. Provides a ppx to transform expressions containing the |. (Ocaml) or -> (Reason) operator. Pipes the left side as first argument to the right side.

Example Reason:

/* validateAge(getAge(parseData(person))) */ person ->parseData ->getAge ->validateAge;

/* Some(preprocess(name)); */ name->preprocess->Some;

/* f(a, ~b, ~c) */ a->f(~b, ~c)

Example Ocaml:

(* validateAge (getAge (parseData person)) *) person |. parseData |. getAge |. validateAge

(* Some(preprocess name) *) name |. preprocess |. Some;

(* f a ~b ~c *) a |. f ~b ~c