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_build

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version=0.27.0
assignment-operator=end-line
break-cases=fit
break-fun-decl=wrap
break-fun-sig=wrap
break-infix=wrap
break-infix-before-func=false
break-separators=before
break-sequences=true
cases-exp-indent=2
cases-matching-exp-indent=normal
doc-comments=before
doc-comments-padding=2
doc-comments-tag-only=default
dock-collection-brackets=false
exp-grouping=preserve
field-space=loose
if-then-else=compact
indicate-multiline-delimiters=space
indicate-nested-or-patterns=unsafe-no
infix-precedence=indent
leading-nested-match-parens=false
let-and=sparse
let-binding-spacing=compact
let-module=compact
margin=80
max-indent=2
module-item-spacing=sparse
ocaml-version=4.14.0
ocp-indent-compat=false
parens-ite=false
parens-tuple=always
parse-docstrings=true
sequence-blank-line=preserve-one
sequence-style=terminator
single-case=compact
space-around-arrays=true
space-around-lists=true
space-around-records=true
space-around-variants=true
type-decl=sparse
wrap-comments=false
wrap-fun-args=true

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## unreleased
## 0.5 - 2025-01-30
- do not depend on, expose or re-export any library
- unhide `Format.formatter`
## 0.4 - 2025-01-28
- do not add new functions, only hide some
- handle more modules
- add some signals stuff to `Sys` module
## 0.3 - 2024-07-26
- move monoporphic comparison operators to Infix submodule
## 0.2 - 2024-07-23
- add monomorphic comparison operators to Float and Int{32|64}
## 0.1 - 2024-07-17
- first release

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GNU Affero General Public License
=================================
_Version 3, 19 November 2007_
_Copyright © 2007 Free Software Foundation, Inc. &lt;<http://fsf.org/>&gt;_
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### 14. Revised Versions of this License
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### 16. Limitation of Liability
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### 17. Interpretation of Sections 15 and 16
If the disclaimer of warranty and limitation of liability provided
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_END OF TERMS AND CONDITIONS_
## How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the “copyright” line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If your software can interact with users remotely through a computer
network, you should also make sure that it provides a way for users to
get its source. For example, if your program is a web application, its
interface could display a “Source” link that leads users to an archive
of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the
specific requirements.
You should also get your employer (if you work as a programmer) or school,
if any, to sign a “copyright disclaimer” for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
&lt;<http://www.gnu.org/licenses/>&gt;.

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# prelude
Prelude is an [OCaml] library hiding some parts of the stdlib.
## Installation
`prelude` can be installed with [opam]:
```sh
opam install prelude
```
If you don't have `opam`, you can install it following the [how to install opam] guide.
If you can't or don't want to use `opam`, consult the [opam file] for build instructions.
## Quickstart
To add it to your library or executable, you simply need to depend on `prelude`, you can also pass a flag to the compiler to open it automatically:
```dune
(library
(name my_amazing_library)
(modules foo bar)
(flags
(:standard -open Prelude))
(libraries prelude))
```
Prelude is re-exporting some dependencies such as `fmt` or `bos`, you should not need to explicitly add them to the `libraries` field or your dune file.
## About
- [LICENSE]
- [CHANGELOG]
[CHANGELOG]: ./CHANGES.md
[LICENSE]: ./LICENSE.md
[opam file]: ./prelude.opam
[test suite]: ./test
[how to install opam]: https://opam.ocaml.org/doc/Install.html
[OCaml]: https://ocaml.org
[opam]: https://opam.ocaml.org/

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(lang dune 3.0)
(implicit_transitive_deps false)
(name prelude)
(license AGPL-3.0-or-later)
(authors "pena <pena@kumikode.org>")
(maintainers "pena <pena@kumikode.org>")
(source
(uri git+https://forge.kumikode.org/kumikode/prelude.git))
(homepage https://forge.kumikode.org/kumikode/prelude)
(bug_reports https://forge.kumikode.org/kumikode/prelude/issues)
(generate_opam_files true)
(package
(name prelude)
(synopsis "OCaml library hiding stuff from the stdlib")
(description
"Prelude is an OCaml library hiding a lot of stuff from the stdlib to enforce good programming practices.")
(tags
(prelude stdlib safe exception layer hide))
(depends
(ocaml
(>= 4.13))
(ocamlformat :with-dev-setup)
(odoc :with-dev-setup)))

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# This file is generated by dune, edit dune-project instead
opam-version: "2.0"
synopsis: "OCaml library hiding stuff from the stdlib"
description:
"Prelude is an OCaml library hiding a lot of stuff from the stdlib to enforce good programming practices."
maintainer: ["pena <pena@kumikode.org>"]
authors: ["pena <pena@kumikode.org>"]
license: "AGPL-3.0-or-later"
tags: ["prelude" "stdlib" "safe" "exception" "layer" "hide"]
homepage: "https://forge.kumikode.org/kumikode/prelude"
bug-reports: "https://forge.kumikode.org/kumikode/prelude/issues"
depends: [
"dune" {>= "3.0"}
"ocaml" {>= "4.13"}
"ocamlformat" {with-dev-setup}
"odoc" {with-dev-setup}
"odoc" {with-doc}
]
build: [
["dune" "subst"] {dev}
[
"dune"
"build"
"-p"
name
"-j"
jobs
"@install"
"@runtest" {with-test}
"@doc" {with-doc}
]
]
dev-repo: "git+https://forge.kumikode.org/kumikode/prelude.git"

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{ pkgs ? import <nixpkgs> { } }:
pkgs.mkShell {
nativeBuildInputs = with pkgs.ocamlPackages; [
dune_3
findlib
merlin
ocaml
ocamlformat
odoc
];
buildInputs = with pkgs.ocamlPackages; [
];
}

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(library
(public_name prelude)
(modules prelude)
(wrapped false))

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(* SPDX-License-Identifier: AGPL-3.0-or-later *)
(* Copyright © 2024 The Prelude programmers *)
(* This module is automatically opened in all files in order to hide certain unwanted parts of the standard library. *)
include Stdlib
type ('a, 'b) result = ('a, 'b) Stdlib.result
module Empty = struct end
(* Hide unwanted functions. *)
type you_are_trying_to_use_a_function_that_has_been_hidden_by_prelude = |
type because_it_is_unwanted = |
type this_function_has_been_hidden_by_prelude_because_it_is_unwanted =
you_are_trying_to_use_a_function_that_has_been_hidden_by_prelude
-> because_it_is_unwanted
let hidden : this_function_has_been_hidden_by_prelude_because_it_is_unwanted =
fun (_ : you_are_trying_to_use_a_function_that_has_been_hidden_by_prelude) ->
(assert false : because_it_is_unwanted)
module Float = struct
include Float
let of_string = hidden
module Infix = struct
external ( < ) : float -> float -> bool = "%lessthan"
external ( <= ) : float -> float -> bool = "%lessequal"
external ( <> ) : float -> float -> bool = "%notequal"
external ( = ) : float -> float -> bool = "%equal"
external ( > ) : float -> float -> bool = "%greaterthan"
external ( >= ) : float -> float -> bool = "%greaterequal"
external compare : float -> float -> int = "%compare"
external equal : float -> float -> bool = "%equal"
end
end
module Int32 = struct
include Int32
module Infix = struct
external ( < ) : int32 -> int32 -> bool = "%lessthan"
external ( <= ) : int32 -> int32 -> bool = "%lessequal"
external ( <> ) : int32 -> int32 -> bool = "%notequal"
external ( = ) : int32 -> int32 -> bool = "%equal"
external ( > ) : int32 -> int32 -> bool = "%greaterthan"
external ( >= ) : int32 -> int32 -> bool = "%greaterequal"
external compare : int32 -> int32 -> int = "%compare"
external equal : int32 -> int32 -> bool = "%equal"
end
end
module Int64 = struct
include Int64
module Infix = struct
external ( < ) : int64 -> int64 -> bool = "%lessthan"
external ( <= ) : int64 -> int64 -> bool = "%lessequal"
external ( <> ) : int64 -> int64 -> bool = "%notequal"
external ( = ) : int64 -> int64 -> bool = "%equal"
external ( > ) : int64 -> int64 -> bool = "%greaterthan"
external ( >= ) : int64 -> int64 -> bool = "%greaterequal"
external compare : int64 -> int64 -> int = "%compare"
external equal : int64 -> int64 -> bool = "%equal"
end
end
module Hashtbl = struct
include Hashtbl
let find = hidden
module type S = sig
include Hashtbl.S
val find : this_function_has_been_hidden_by_prelude_because_it_is_unwanted
end
module Make (H : HashedType) : S with type key = H.t = struct
include Hashtbl.Make (H)
let find = hidden
end
module type SeededS = sig
include Hashtbl.SeededS
val find : this_function_has_been_hidden_by_prelude_because_it_is_unwanted
end
module MakeSeeded (H : SeededHashedType) : SeededS with type key = H.t =
struct
include Hashtbl.MakeSeeded (H)
let find = hidden
end
end
module List = struct
include List
(* use a match to deconstruct the list *)
let hd = hidden
(* use a match to deconstruct the list *)
let tl = hidden
let nth = hidden
let find = hidden
let assoc = hidden
let assq = hidden
end
module Map = struct
module type OrderedType = Map.OrderedType
module type S = sig
include Map.S
val min_binding :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val max_binding :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val choose : this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val find : this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val find_first :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val find_last :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
end
module Make (Ord : OrderedType) : S with type key = Ord.t = struct
include Map.Make (Ord)
let min_binding = hidden
let max_binding = hidden
let choose = hidden
let find = hidden
let find_first = hidden
let find_last = hidden
end
end
module Option = struct
include Option
let get = hidden
end
module Result = struct
include Result
let get_ok = hidden
let get_error = hidden
end
module Queue = struct
include Queue
let take = hidden
let pop = hidden
let peek = hidden
let top = hidden
end
module Stack = struct
include Stack
let pop = hidden
let drop = hidden
let top = hidden
end
module Set = struct
module type OrderedType = Set.OrderedType
module type S = sig
include Set.S
val min_elt :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val max_elt :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val choose : this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val find : this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val find_first :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
val find_last :
this_function_has_been_hidden_by_prelude_because_it_is_unwanted
end
module Make (Ord : OrderedType) : S with type elt = Ord.t = struct
include Set.Make (Ord)
let min_elt = hidden
let max_elt = hidden
let choose = hidden
let find = hidden
let find_first = hidden
let find_last = hidden
end
end
(* Use Re instead. *)
module Str = Empty
module String = struct
include String
type nonrec t = t
let index_from = hidden
let rindex_from = hidden
let index = hidden
let rindex = hidden
end
(* Use the fmt library instead. *)
module Printf = Empty
(* USe the fmt library instead. *)
module Format = struct
type nonrec formatter = Format.formatter
end
(* Use Cmdliner instead. *)
module Arg = Empty
(* Use unlabeled version instead. *)
module ArrayLabels = Empty
module BytesLabels = Empty
module ListLabels = Empty
module MoreLabels = Empty
module StdLabels = Empty
module StringLabels = Empty
(* Use Fpath instead. *)
module Filename = Empty
(* Be safe instead. *)
(* TODO: enable it again, it is disabled otherwise the generated menhir file does not compile.
module Obj = Empty
*)
(* Use Menhir instead. *)
module Parsing = Empty
(* Hidden to avoid exposing an escape hatch to get access to the previously hiddden modules. *)
module Stdlib = Empty
(* Use Bos instead. *)
module Sys = struct
(* Signals *)
type signal_behavior = Sys.signal_behavior =
| Signal_default
| Signal_ignore
| Signal_handle of (int -> unit)
let set_signal = Sys.set_signal
let sigabrt = Sys.sigabrt
let sigalrm = Sys.sigalrm
let sigfpe = Sys.sigfpe
let sighup = Sys.sighup
let sigill = Sys.sigill
let sigint = Sys.sigint
let sigkill = Sys.sigkill
let sigpipe = Sys.sigpipe
let sigquit = Sys.sigquit
let sigsegv = Sys.sigsegv
let sigterm = Sys.sigterm
let sigusr1 = Sys.sigusr1
let sigusr2 = Sys.sigusr2
let sigchld = Sys.sigchld
let sigcont = Sys.sigcont
let sigstop = Sys.sigstop
let sigtstp = Sys.sigtstp
let sigttin = Sys.sigttin
let sigttou = Sys.sigttou
let sigvtalrm = Sys.sigvtalrm
let sigprof = Sys.sigprof
let sigbus = Sys.sigbus
let sigpoll = Sys.sigpoll
let sigsys = Sys.sigsys
let sigtrap = Sys.sigtrap
let sigurg = Sys.sigurg
let sigxcpu = Sys.sigxcpu
let sigxfsz = Sys.sigxfsz
(* Other stuff *)
let opaque_identity = Sys.opaque_identity
let word_size = Sys.word_size
end
(* Hide dangerous polymorphic operations. *)
let ( <> ) (a : int) (b : int) = a <> b
let ( = ) (a : int) (b : int) = Int.equal a b
let ( < ) (a : int) (b : int) = a < b
let ( > ) (a : int) (b : int) = a > b
let ( <= ) (a : int) (b : int) = a <= b
let ( >= ) (a : int) (b : int) = a >= b
let compare (a : int) (b : int) = Int.compare a b
let min (a : int) (b : int) = Int.min a b
let max (a : int) (b : int) = Int.max a b
(* Rename some functions. *)
let phys_equal = ( == )
(* Make some functions safe. *)
(* TODO: there's no `_opt` version in the Stdlib for now, there's a PR for it.
We should enforce its use once it has been added, and remove the unsafe one.
let char_of_int = hidden
*)
let bool_of_string = hidden
let int_of_string = hidden
let float_of_string = hidden
(* Use a proper Result type. *)
let invalid_arg = hidden
let failwith = hidden
(* Use phys_equal instead. *)
let ( == ) = hidden
(* Use not_phys_equal instead. *)
let ( != ) = hidden
(* Use Fmt instead. *)
let ( ^ ) = hidden
(* Use a proper `let (_ : t) = e1` construct, don't forget to annotate the type to avoid getting partial application bugs. *)
let ignore = hidden
(* Use Fmt instead. *)
let print_char = hidden
let print_string = hidden
let print_bytes = hidden
let print_int = hidden
let print_float = hidden
let print_endline = hidden
let print_newline = hidden
let prerr_char = hidden
let prerr_string = hidden
let prerr_bytes = hidden
let prerr_int = hidden
let prerr_float = hidden
let prerr_endline = hidden
let prerr_newline = hidden
(* Use Bos instead. *)
let read_line = hidden
let read_int = hidden
let read_int_opt = hidden
let read_float = hidden
let read_float_opt = hidden
let open_out = hidden
let open_out_bin = hidden
let open_out_gen = hidden
let flush = hidden
let flush_all = hidden
let output_char = hidden
let output_string = hidden
let output_bytes = hidden
let output = hidden
let output_substring = hidden
let output_byte = hidden
let output_binary_int = hidden
let output_value = hidden
let seek_out = hidden
let pos_out = hidden
let out_channel_length = hidden
let close_out = hidden
let close_out_noerr = hidden
let set_binary_mode_out = hidden
let open_in = hidden
let open_in_bin = hidden
let open_in_gen = hidden
let input_char = hidden
let input_line = hidden
let input = hidden
let really_input = hidden
let really_input_string = hidden
let input_byte = hidden
let input_binary_int = hidden
let input_value = hidden
let seek_in = hidden