Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* @license Apache-2.0
*
* Copyright (c) 2021 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 //
/**
* Applies a function against an accumulator and each element in an array while iterating from right to left and returns the accumulated result.
*
* @private
* @param {Object} x - object containing input array data
* @param {ArrayLikeObject} x.data - input array data
* @param {Array<Function>} x.accessors - input array accessors
* @param {*} initial - initial value
* @param {Function} fcn - function to apply
* @param {*} thisArg - function execution context
* @returns {*} accumulated result
*
* @example
* function sum( acc, value ) {
* return acc + value;
* }
*
* // Define a getter:
* function getter( buf, idx ) {
* return buf[ idx ];
* }
*
* // Create the input array object:
* var x = {
* 'data': [ 1, 2, 3, 4 ],
* 'accessors': [ getter ]
* };
*
* // Compute the sum:
* var out = reduceRight( x, 0, sum );
* // returns 10
*/
function reduceRight( x, initial, fcn, thisArg ) {
var xbuf;
var get;
var acc;
var i;
// Cache reference to the input data:
xbuf = x.data;
// Cache the element accessor:
get = x.accessors[ 0 ];
// Iterate over each element...
acc = initial;
for ( i = xbuf.length-1; i >= 0; i-- ) {
acc = fcn.call( thisArg, acc, get( xbuf, i ), i, xbuf );
}
return acc;
}
// EXPORTS //
module.exports = reduceRight;
|