All files / src/implementation array.ts

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/**
 * Copyright 2017 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
 
/**
 * Returns true if the object is contained in the array (compared with ===).
 * @template T
 */
export function contains<T>(array: T[], elem: T): boolean {
  return array.indexOf(elem) !== -1;
}
 
/**
 * Returns a shallow copy of the array or array-like object (e.g. arguments).
 * @template T
 */
export function clone<T>(arraylike: T[]): T[] {
  return Array.prototype.slice.call(arraylike);
}
 
/**
 * Removes the given element from the given array, if it is contained.
 * Directly modifies the passed-in array.
 * @template T
 */
export function remove<T>(array: T[], elem: T) {
  const i = array.indexOf(elem);
  Eif (i !== -1) {
    array.splice(i, 1);
  }
}