/**
* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* 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.
*/

'use strict';

// MAIN //

/**
* Adds elements from a collection to the beginning of an array.
*
* @private
* @param {Array} arr - input array
* @param {ArrayLike} items - items to add
* @returns {Array} input array
*
* @example
* var arr = [ 1.0, 2.0, 3.0, 4.0, 5.0 ];
*
* arr = prepend( arr, [ 6.0, 7.0 ] );
* // returns [ 6.0, 7.0, 1.0, 2.0, 3.0, 4.0, 5.0 ]
*/
function prepend( arr, items ) {
	var i;
	for ( i = items.length-1; i >= 0; i-- ) {
		arr.unshift( items[ i ] );
	}
	return arr;
}


// EXPORTS //

module.exports = prepend;