package alba

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Alba compiler

Install

Dune Dependency

albatross-lang.sourceforge.net Readme Edit opam file Versions (5)

Authors

H

Helmut Brandl <helmut.brandl@gmx.net>

Maintainers

H

Helmut Brandl <helmut.brandl@gmx.net>

Sources

0.4.1.tar.gz

sha256=439b1dce07c86e914d1ebf1712c5581418314b0c8d13594f27a698b1d25fe272

md5=5cf58d4ed4eacbe6f330e9d2378ef5c6

doc/alba.fmlib/Fmlib/Monad/Result/index.html

Module `Monad.Result`

Result monad

Parameters

module Error : Module_types.ANY

Signature

include Module_types.MONAD with type 'a t = ('a, Error.t) result

type 'a t = ('a, Error.t) result

The type of the monad containing values of type 'a

val return : 'a -> 'a t

return a makes a monadic container containing the value a.

val (>>=) : 'a t -> ('a -> 'b t) -> 'b t

m >>= f extracts the value a from the monadic container m and returns f a.

val (>=>) : ('a -> 'b t) -> ('b -> 'c t) -> 'a -> 'c t

f >=> g composition of the two monadic functions f and g.

f >=> g is equivalent to fun a -> f a >>= g.

val map : ('a -> 'b) -> 'a t -> 'b t

map f m maps the values in the monadic container m with the function f.

val join : 'a t t -> 'a t

Remove one level of container. join m is equivalent to mm >>= fun m -> m.

val (<*>) : ('a -> 'b) t -> 'a t -> 'b t

f <*> m applies the function contained in f to the content of the monadic container m and injects the result into a new monadic container.

type error = Error.t

val throw : error -> 'a t

val catch : 'a t -> (error -> 'a t) -> 'a t

val continue : 'a t -> ('a -> 'z) -> (error -> 'z) -> 'z

On This Page

Parameters
Signature