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pgx_aux.ml
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module String = struct include String let implode xs = let buf = Buffer.create (List.length xs) in List.iter (Buffer.add_char buf) xs; Buffer.contents buf ;; let fold_left f init str = let len = length str in let rec loop i accum = if i = len then accum else loop (i + 1) (f accum str.[i]) in loop 0 init ;; end module List = struct include List (* From Base https://github.com/janestreet/base/blob/f86e72ee3b59ff5315e20a8392b81fb2f5237a25/src/ppx_compare_lib.ml The MIT License Copyright (c) 2016--2020 Jane Street Group, LLC <opensource@janestreet.com> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *) let rec compare compare_elt a b = match a, b with | [], [] -> 0 | [], _ -> -1 | _, [] -> 1 | x :: xs, y :: ys -> let res = compare_elt x y in if res <> 0 then res else compare compare_elt xs ys ;; (* The default List.map isn't tail recursive so we replace it with one that is *) let map f xs = List.rev_map f xs |> List.rev end let compare_bool = Bool.compare let compare_float = Float.compare let compare_int = Int.compare let compare_int32 = Int32.compare let compare_list = List.compare let compare_option = Option.compare let compare_string = String.compare