How to use the unzipWith function from lodash

Find comprehensive JavaScript lodash.unzipWith code examples handpicked from public code repositorys.

lodash.unzipWith is a function in the Lodash library that unzips a matrix of arrays into a set of arrays and applies a custom function to each group of corresponding elements.

lodash-contrib.commonjs.js

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module.exports.unset               = _.unset;
module.exports.unsplat             = _.unsplat;
module.exports.unsplatl            = _.unsplatl;
module.exports.unsplatr            = _.unsplatr;
module.exports.unzip               = _.unzip;
module.exports.unzipWith           = _.unzipWith;
module.exports.update              = _.update;
module.exports.updatePath          = _.updatePath;
module.exports.updateWith          = _.updateWith;
module.exports.upperCase           = _.upperCase;

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+ 92 other calls in file

lodash.js

GitHub: mdmarufsarker/lodash

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console.log(uniqWith); // => [2.1, 1.2]


const unzip = _.unzip([['a', 1, true], ['b', 2, false]]);
console.log(unzip); // => [['a', 'b'], [1, 2], [true, false]]


const unzipWith = _.unzipWith([[1, 10, 100], [2, 20, 200]], (...arrays) => _.sum(arrays));
console.log(unzipWith); // => [3, 30, 300]


const without = _.without([2, 1, 2, 3], 1, 2);
console.log(without); // => [3]

+ 15 other calls in file

How does lodash.unzipWith work?

lodash.unzipWith is a method in the Lodash library that returns a new array of arrays created by unzipping the input arrays and invoking the given function with the corresponding elements from each input array. The function is called for each element of the resulting arrays, where each argument passed to the function is an array of corresponding elements from each input array at that index. The function can be used to combine or transform the values before they are returned in the resulting arrays.

arraydemo.js

GitHub: Hupeng7/es6demo

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//_.unzipWith(array,[iteratee=_.indentity])
let zipped1 = _.zip([1, 2], [10, 20], [100, 200]);
console.log('zipped1--->', zipped1);
//zipped1---> [ [ 1, 10, 100 ], [ 2, 20, 200 ] ]
let unzipWith1 = _.unzipWith(zipped1, _.add);
console.log('unzipWith1--->', unzipWith1);
//unzipWith1---> [ 3, 30, 300 ]


//_.with(array,[values])

Ai Example

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const _ = require("lodash");

const arr = [
  [1, 2, 3],
  [4, 5, 6],
];
const result = _.unzipWith(arr, (a, b) => a + b);

console.log(result); // Output: [5, 7, 9]

In this example, we have an array arr that contains two arrays with three elements each. We use _.unzipWith to unzip the arrays and combine them using the provided function (a, b) => a + b. This function takes two arguments, a and b, which are the elements from the corresponding positions of the two arrays. In this case, the function adds the elements together to produce a new array [5, 7, 9], which is the result of the _.unzipWith operation.

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