Lodash is a JavaScript library that works on the top of underscore.js. Lodash helps in working with arrays, collection, strings, objects, numbers, etc.
The _.reduceRight() method is similar to _.reduce() method except that it iterates over elements of collection from right to left.
Syntax:
_.reduceRight(collection, iteratee, accumulator)
Parameters: This method accepts three parameters as mentioned above and described below:
- collection: This parameter holds the collection to iterate over.
- iteratee: This parameter holds the function invoked per iteration.
- accumulator: This parameter holds the initial value.
Return Value: This method returns the accumulated value.
Example 1: Here, const _ = require(‘lodash’) is used to import the lodash library in the file.
// Requiring the lodash library const _ = require("lodash"); // Original array var array = [[10, 11], [12, 13], [14, 15]]; // Use of _.reduceRight() method let gfg = _.reduceRight(array, function(flattened, other) { return flattened.concat(other); }, []); // Printing the output console.log(gfg); |
Output:
[ 14, 15, 12, 13, 10, 11 ]
Example 2:
// Requiring the lodash library const _ = require("lodash"); // Original array var array = [['C++', 'C#'], ['DAA', 'Java'], ['Lodash', 'Python']]; // Use of _.reduceRight() method let gfg = _.reduceRight(array, function(flattened, other) { return flattened.concat(other); }, []); // Printing the output console.log(gfg); |
Output:
[ 'Lodash', 'Python', 'DAA', 'Java', 'C++', 'C#' ]
Note: This code will not work in normal JavaScript because it requires the library lodash to be installed.
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