1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556
define(['./_baseRest', './_createWrap', './_getHolder', './_replaceHolders'], function(baseRest, createWrap, getHolder, replaceHolders) {
  /** Used to compose bitmasks for function metadata. */  var WRAP_BIND_FLAG = 1,      WRAP_PARTIAL_FLAG = 32;
  /**   * Creates a function that invokes `func` with the `this` binding of `thisArg`   * and `partials` prepended to the arguments it receives.   *   * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,   * may be used as a placeholder for partially applied arguments.   *   * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"   * property of bound functions.   *   * @static   * @memberOf _   * @since 0.1.0   * @category Function   * @param {Function} func The function to bind.   * @param {*} thisArg The `this` binding of `func`.   * @param {...*} [partials] The arguments to be partially applied.   * @returns {Function} Returns the new bound function.   * @example   *   * function greet(greeting, punctuation) {   *   return greeting + ' ' + this.user + punctuation;   * }   *   * var object = { 'user': 'fred' };   *   * var bound = _.bind(greet, object, 'hi');   * bound('!');   * // => 'hi fred!'   *   * // Bound with placeholders.   * var bound = _.bind(greet, object, _, '!');   * bound('hi');   * // => 'hi fred!'   */  var bind = baseRest(function(func, thisArg, partials) {    var bitmask = WRAP_BIND_FLAG;    if (partials.length) {      var holders = replaceHolders(partials, getHolder(bind));      bitmask |= WRAP_PARTIAL_FLAG;    }    return createWrap(func, bitmask, thisArg, partials, holders);  });
  // Assign default placeholders.  bind.placeholder = {};
  return bind;});