How to use the unzip function from lodash

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

lodash.unzip is a function that takes an array of arrays and groups the values by their index position, returning a new array of arrays where each sub-array contains the values from the original arrays at that index position.

lodash-contrib.commonjs.js

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module.exports.uniqueId            = _.uniqueId;
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;

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+ 92 other calls in file

lodash.js

GitHub: mdmarufsarker/lodash

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


const uniqWith = _.uniqWith([2.1, 1.2, 2.3], (a, b) => Math.floor(a) === Math.floor(b));
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]

+ 15 other calls in file

How does lodash.unzip work?

Sure! lodash.unzip takes an array of arrays as its input. It then creates a new array with the same number of sub-arrays as the length of the first sub-array in the input array. It then iterates over each sub-array in the input array and pushes the value at the current index of that sub-array into the corresponding sub-array in the output array. For example, if the input array is [[1, 4], [2, 5], [3, 6]], the output array would be [[1, 2, 3], [4, 5, 6]]. This is because the first sub-array in the input array is [1, 4], so the first value in the output array will be an array containing 1, 2, and 3, which are the first values from each sub-array in the input array. The second sub-array in the input array is [2, 5], so the second value in the output array will be an array containing 4, 5, and 6, which are the second values from each sub-array in the input array.

arraydemo.js

GitHub: Hupeng7/es6demo

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//_.unzip(array)
let zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
console.log('zipped--->', zipped);
//zipped---> [ [ 'a', 1, true ], [ 'b', 2, false ] ]
let unzip1 = _.unzip(zipped);
console.log('unzip1--->', unzip1);
//unzip1---> [ [ 'a', 'b' ], [ 1, 2 ], [ true, false ] ]


//_.unzipWith(array,[iteratee=_.indentity])

Ai Example

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const _ = require("lodash");

const arr = [
  [1, 4],
  [2, 5],
  [3, 6],
];
const unzipped = _.unzip(arr);

console.log(unzipped);
// Output: [[1, 2, 3], [4, 5, 6]]

In this example, we first import lodash and assign the unzip function to the _ variable. We then define an array arr containing three sub-arrays, each with two values. We call _.unzip(arr) to unzip the array, which returns a new array with two sub-arrays, each containing the values from arr at the same index position. Finally, we log the unzipped array to the console, which outputs [[1, 2, 3], [4, 5, 6]].

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