package travesty

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Traversable containers, monad extensions, and more

Install

Dune Dependency

mattwindsor91.github.io Readme Changelog Edit opam file Versions (8)

Authors

M

Matt Windsor <mattwindsor91@gmail.com>

Maintainers

M

Matt Windsor <mattwindsor91@gmail.com>

Sources

travesty-v0.7.0.tbz

sha256=01661918f73f33b0e6d0cf3851c2d5d6ef76b86332a3e76a4958689ff1a6fd3a

sha512=14e9b0e9ae39055c386c5e996055ce59edf57b9bf9b0055722632520f9c9b0270af571576950be982ed2b86e859361c7344166a38a85fa7d28d45be8f3e18c77

doc/travesty.containers/Travesty_containers/Zipper/Plain/On_monad/index.html

Module `Plain.On_monad`Source

On_monad provides various zipper operations parametrised by a monad.

Parameters

module M : Base.Monad.S

Signature

Sourceval pop_m : 'a t -> on_empty:('a t -> ('a * 'a t) M.t) -> ('a * 'a t) M.t

pop_m zipper ~on_empty behaves like pop, but executes a custom monadic action on_empty, instead of returning an error, when the cursor is empty.

Sourceval peek_m : ?steps:Base.int -> 'a t -> on_empty:('a t -> 'a M.t) -> 'a M.t

peek_m ?steps zipper ~on_empty behaves like peek_opt, but executes a custom monadic action on_empty, instead of returning None, when the cursor is empty.

Sourceval step_m : ?steps:Base.int -> 'a t -> on_empty:('a t -> 'a t M.t) -> 'a t M.t

step_m ?steps zipper ~on_empty behaves like step, but executes a custom monadic action on_empty, instead of returning an error, when the cursor is empty.

Source

val map_m_head : 
  'a t ->
  f:('a -> 'a Base.option M.t) ->
  on_empty:('a t -> 'a t M.t) ->
  'a t M.t

map_m_head ?steps zipper ~on_empty behaves like map_head, but executes a custom monadic action on_empty, instead of leaving the zipper unchanged, when the cursor is empty.

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Parameters
Signature