Module do

The Do Module.

Description

The Do Module.

applicative(A) = [A] | fn(term(), A) | either(term(), A) | maybe(A)

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

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

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

functor(A) = [A] | map(A) | fn(term(), A) | either(term(), A) | maybe(A)

map(A) = #{term() := A}

maybe(A) = {just, A} | nothing

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

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

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

fmap(F::fn(A, B), Functor::functor(A)) -> functor(B)

liftA2(A1::applicative(fn(A, B)), A2::applicative(A)) -> applicative(B)

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

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

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