Advent-of-Nix-2024/utils.nix

{ lib, ... }:
with lib;
with builtins; rec {
  readLines = f: init (filter isString (split "\n" (readFile f)));
  reSplit = re: s: filter isString (split re s);
  matchAll = re: s: filter isList (split re s);
  splitWhitespace = reSplit "[[:space:]]+";
  abs = i: if i >= 0 then i else i * -1;
  delta = x: y: abs (x - y);
  listSum = foldl' add 0;
  listSumWith = f: l: foldl' add 0 (map f l);
  deleteAt = l: i: (take i l) ++ (drop (i + 1) l);
  eq = x: y: x == y;
  greaterThan = x: y: x > y;
  listRange = l: range 0 ((length l) - 1);
  transpose = l: map (i: map ((flip elemAt) i) l) (listRange (head l));
  invert = f: x: !(f x);
}