package coq-core

  1. Overview
  2. Docs
package coq-core
Legend:
Library
Module
Module type
Parameter
Class
Class type
val map : ('a -> 'b t) -> 'a list -> 'b list t

List.map f l maps f on the elements of l in left to right order.

val map_right : ('a -> 'b t) -> 'a list -> 'b list t

List.map f l maps f on the elements of l in right to left order.

val fold_right : ('a -> 'b -> 'b t) -> 'a list -> 'b -> 'b t

Like the regular List.fold_right. The monadic effects are threaded right to left.

Note: many monads behave poorly with right-to-left order. For instance a failure monad would still have to traverse the whole list in order to fail and failure needs to be propagated through the rest of the list in binds which are now spurious. It is also the worst case for substitution monads (aka free monads), exposing the quadratic behaviour.

val fold_left : ('a -> 'b -> 'a t) -> 'a -> 'b list -> 'a t

Like the regular List.fold_left. The monadic effects are threaded left to right. It is tail-recursive if the (>>=) operator calls its second argument in a tail position.

val iter : ('a -> unit t) -> 'a list -> unit t

Like the regular List.iter. The monadic effects are threaded left to right. It is tail-recurisve if the >> operator calls its second argument in a tail position.

val map_filter : ('a -> 'b option t) -> 'a list -> 'b list t

Like the regular CList.map_filter. The monadic effects are threaded left to right.

Two-list iterators
val fold_left2 : 'a t -> ('a -> 'b -> 'c -> 'a t) -> 'a -> 'b list -> 'c list -> 'a t

fold_left2 r f s l1 l2 behaves like fold_left but acts simultaneously on two lists. Runs r (presumably an exception-raising computation) if both lists do not have the same length.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct