/*
 This file is part of GNU Taler
 (C) 2021 Taler Systems S.A.

 GNU Taler is free software; you can redistribute it and/or modify it under the
 terms of the GNU General Public License as published by the Free Software
 Foundation; either version 3, or (at your option) any later version.

 GNU Taler 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 General Public License for more details.

 You should have received a copy of the GNU General Public License along with
 GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */

/**
 * Functional programming utilities.
 */
export namespace fnutil {
  export function all<T>(arr: T[], f: (x: T) => boolean): boolean {
    for (const x of arr) {
      if (!f(x)) {
        return false;
      }
    }
    return true;
  }

  export function any<T>(arr: T[], f: (x: T) => boolean): boolean {
    for (const x of arr) {
      if (f(x)) {
        return true;
      }
    }
    return false;
  }
}