Module do

The Do Module.

Description

The Do Module.

either(A, B) = {error, A} | {ok, B}

fn(A, B) = fun((A) -> B)

fn(A) = fun(() -> A)

maybe(A) = {ok, A} | error

monad(A) = [A] | either(term(), A) | maybe(A)

bind(F::fn(A, monad(B)), Monad::monad(A)) -> monad(B)

do(Monad::monad(A), Funs::[fn(A, monad(B)) | fn(monad(B))]) -> monad(B)

get_monads() -> [atom()]

pure(A) -> monad(A) | A

register_monad(Mod::atom()) -> either(duplicate_monad, ok)

then(F::fn(monad(B)), Monad::monad(term())) -> monad(B)

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