package volgo

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A Versatile OCaml Library for Git Operations

Install 

dune-project
 Dependency

github.com Readme Changelog Edit opam file Versions (3)

Authors

  1. M
    Mathieu Barbin

Maintainers

  1. M
    Mathieu Barbin <opensource@mbarbin.org>

Sources

volgo-0.0.22.tbz
sha256=2714935a34417be2151736a4765431746c9348db5a3b4f0eaacaf74dfaefeabb
sha512=0eba27395125ae928fd53561029d9653094d822b2907cb9afc18f412b46ef47cf880ba80d1bf17212add4e68e6a55e2792176303e2b0bcee08940e25731b4738

doc/volgo.stdlib/Volgo_stdlib/Option/index.html

Module Volgo_stdlib.OptionSource

include module type of Option

Options

Sourcetype 'a t = 'a option =
  1. | None
  2. | Some of 'a

The type for option values. Either None or a value Some v.

Sourceval none : 'a option

none is None.

Sourceval some : 'a -> 'a option

some v is Some v.

Sourceval value : 'a option -> default:'a -> 'a

value o ~default is v if o is Some v and default otherwise.

Sourceval get : 'a option -> 'a

get o is v if o is Some v and raise otherwise.

Sourceval bind : 'a option -> ('a -> 'b option) -> 'b option

bind o f is f v if o is Some v and None if o is None.

Sourceval join : 'a option option -> 'a option

join oo is Some v if oo is Some (Some v) and None otherwise.

Sourceval fold : none:'a -> some:('b -> 'a) -> 'b option -> 'a

fold ~none ~some o is none if o is None and some v if o is Some v.

Predicates and comparisons

Sourceval is_none : 'a option -> bool

is_none o is true if and only if o is None.

Sourceval is_some : 'a option -> bool

is_some o is true if and only if o is Some o.

Sourceval equal : ('a -> 'a -> bool) -> 'a option -> 'a option -> bool

equal eq o0 o1 is true if and only if o0 and o1 are both None or if they are Some v0 and Some v1 and eq v0 v1 is true.

Sourceval compare : ('a -> 'a -> int) -> 'a option -> 'a option -> int

compare cmp o0 o1 is a total order on options using cmp to compare values wrapped by Some _. None is smaller than Some _ values.

Converting

Sourceval to_result : none:'e -> 'a option -> ('a, 'e) result

to_result ~none o is Ok v if o is Some v and Error none otherwise.

Sourceval to_list : 'a option -> 'a list

to_list o is [] if o is None and [v] if o is Some v.

Sourceval to_seq : 'a option -> 'a Seq.t

to_seq o is o as a sequence. None is the empty sequence and Some v is the singleton sequence containing v.

Sourceval sexp_of_t : ('a -> Sexplib0.Sexp.t) -> 'a t -> Sexplib0.Sexp.t
Sourceval iter : 'a t -> f:('a -> unit) -> unit
Sourceval map : 'a option -> f:('a -> 'b) -> 'b option
Sourceval some_if : bool -> 'a -> 'a option