lodash/internal/assocDelete.js

define(['./assocIndexOf'], function(assocIndexOf) {

  /** Used for built-in method references. */
  var arrayProto = Array.prototype;

  /** Built-in value references. */
  var splice = arrayProto.splice;

  /**
   * Removes `key` and its value from the associative array.
   *
   * @private
   * @param {Array} array The array to query.
   * @param {string} key The key of the value to remove.
   * @returns {boolean} Returns `true` if the entry was removed, else `false`.
   */
  function assocDelete(array, key) {
    var index = assocIndexOf(array, key);
    if (index < 0) {
      return false;
    }
    var lastIndex = array.length - 1;
    if (index == lastIndex) {
      array.pop();
    } else {
      splice.call(array, index, 1);
    }
    return true;
  }

  return assocDelete;
});