package shakuhachi

  1. Overview
  2. Docs
A music collection manager

Install 

dune-project
 Dependency

codeberg.org Readme Changelog Edit opam file Versions (5)

Authors

  1. E
    EruEri <nayinayu@mailo.com>

Maintainers

  1. E
    EruEri <nayinayu@mailo.com>

Sources

0.2.0.tar.gz
sha256=966fc8667c2aa9830e64950d2de74bd564a65d60e1f50cfd3dc1e99ef106dc47
sha512=6423ce04d784ba521a7f49fabdafbe036e2dd80cd08ca999fdc6767262d7f12aa4e5002d65efd4c568b343eaabf4d680191c88334d629e1ca0156084531e9e0b

doc/src/shakuhachi.query/range.ml.html

Source file range.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
(*****************************************************************************)
(*                                                                           *)
(*  Copyright (C) 2026 Yves Ndiaye                                           *)
(*                                                                           *)
(* This Source Code Form is subject to the terms of the Mozilla Public       *)
(* License, v. 2.0. If a copy of the MPL was not distributed with this       *)
(* file, You can obtain one at https://mozilla.org/MPL/2.0/.                 *)
(*                                                                           *)
(*****************************************************************************)

(** Operations on ranges. *)

(** type of range values. *)
type 'a t = Value of 'a | Range of 'a option * 'a option

(** [value v] is [Value v]. *)
let value e = Value e

(** [range lhs rhs] is [Range lhs rhs]. *)
let range lhs rhs = Range (lhs, rhs)

(** [to_string some range] is the string representation of [range] using [some].
*)
let to_string some = function
  | Value v ->
      some v
  | Range (lhs, rhs) ->
      let lhs = Option.fold ~none:String.empty ~some lhs in
      let rhs = Option.fold ~none:String.empty ~some rhs in
      Printf.sprintf "%s..%s" lhs rhs

(** [matches range v] tests whether [v] matches [ranges]. All extrema borns are
    included. *)
let matches range v =
  match range with
  | Range (None, None) ->
      true
  | Range (Some t, None) ->
      v >= t
  | Range (None, Some t) ->
      v <= t
  | Range (Some lhs, Some rhs) ->
      v >= lhs && v <= rhs
  | Value h ->
      v = h