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How to use the zip function from lodash

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

lodash.zip is a function in the Lodash library that creates an array of grouped elements, the first of which contains the first elements of the given arrays, the second of which contains the second elements of the given arrays, and so on.

astrobench.js

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 * @category Arrays
 * @param {...Array} [array] Arrays to process.
 * @returns {Array} Returns a new array of grouped elements.
 * @example
 *
 * _.zip(['fred', 'barney'], [30, 40], [true, false]);
 * // => [['fred', 30, true], ['barney', 40, false]]
 */
function zip() {
  var array = arguments.length > 1 ? arguments : arguments[0],

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lodash-contrib.commonjs.js

GitHub: node4good/lodash-contrib

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module.exports.words               = _.words;
module.exports.wrap                = _.wrap;
module.exports.xor                 = _.xor;
module.exports.xorBy               = _.xorBy;
module.exports.xorWith             = _.xorWith;
module.exports.zip                 = _.zip;
module.exports.zipObject           = _.zipObject;
module.exports.zipObjectDeep       = _.zipObjectDeep;
module.exports.zipWith             = _.zipWith;

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+ 92 other calls in file

How does lodash.zip work?

lodash.zip is a function that creates an array of grouped elements, the first element contains the first element of each given array, the second element contains the second element of each given array, and so on, until all the elements have been grouped. If the given arrays are not of equal length, the resulting array will have a length equal to the length of the shortest array.

tuple.js

GitHub: mrijk/speculaas

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}

function* explainInvalid(values, predicates, via) {
    if (values.length !== predicates.length) return;

    const pairs = _.zip(predicates, values);
    const isInvalid = _.negate(_.spread(isValid));
    const index = _.findIndex(pairs, isInvalid);
    if (index !== -1) {
        const [spec, val] = pairs[index];

+ 11 other calls in file

cat.js

GitHub: mrijk/speculaas

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function* explainInvalid(values, specs, via) {
    if (values.length !== specs.length) return;

    // Looks a lot like implementation of Tuple!
    const pairs = _.zip(specs, values);
    const isInvalid = ([[, spec], value]) => !isValid(spec, value);
    const index = _.findIndex(pairs, isInvalid);
    if (index !== -1) {
        const [[key, spec], val] = pairs[index];

Ai Example

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const _ = require("lodash");

const arr1 = ["a", "b", "c"];
const arr2 = [1, 2, 3];

const zipped = _.zip(arr1, arr2);
console.log(zipped); // Output: [ [ 'a', 1 ], [ 'b', 2 ], [ 'c', 3 ] ]

In this example, we have two arrays arr1 and arr2. We use _.zip to combine these two arrays element-wise into a single array of tuples zipped. Each tuple in zipped contains the corresponding elements of arr1 and arr2. In the output, we can see that zipped contains three tuples with the elements ['a', 1], ['b', 2], and ['c', 3].

day20b.js

GitHub: jared-hughes/adventofcode

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  // Remove the last character (the closing newline)
  dataString = dataString.slice(0, dataString.length-1)
  const L = dataString.split(/\n\n/g)
  solve(L.map(tile => ({
    id: tile.split(/\n/g)[0].match(/Tile (\d+):/)[1],
    borders: _.zip(...borders(tile.split(/\n/g).slice(1)
      .map(line => [...line].map(c => c == "#" ? 1 : 0))).map(prints)),
    center: center(tile.split(/\n/g).slice(1).map(line => [...line].map(c => c == "#" ? 1 : 0)))
  })))
})

+ 7 other calls in file

index.js

GitHub: sluukkonen/iiris

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{
  name: 'zip',
  params: [num1, num10, num100, num1000],
  benchmarks: (array) => ({
    iiris: () => A.zip(array, array),
    lodash: () => _.zip(array, array),
    ramda: () => R.zip(array, array),
  }),
},
{

day25a.js

GitHub: jared-hughes/adventofcode

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    }
  }
  return newL;
}
L = step(1);
L = _.zip(...L);
L = step(2);
L = _.zip(...L);
if (!changed) {
  clog(i);

+ 5 other calls in file

lodash.js

GitHub: mdmarufsarker/lodash

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console.log(xorBy); // => [1.2, 3.4]


const xorWith = _.xorWith([2.1, 1.2], [2.3, 3.4], (a, b) => Math.floor(a) === Math.floor(b));
console.log(xorWith); // => [1.2, 3.4]


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


const zipObject = _.zipObject(['a', 'b'], [1, 2]);
console.log(zipObject); // => { 'a': 1, 'b': 2 }

+ 15 other calls in file

aql-graph-traversal-generic-tests.js

GitHub: arangodb/arangodb

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assertTrue(!_.isEmpty(actualPaths));

const actualPathVertices = actualPaths.map(getVertices);

const pathLengths = actualPaths.map(p => [getCost(p), getVertices(p).length]);
const adjacentPairs = _.zip(pathLengths, _.tail(pathLengths));
adjacentPairs.pop(); // we don't want the last element, because the tail is shorter
// This asserts in addition to a.cost <= b.cost that if a.cost == b.cost we have a.length <= b.length
assertTrue(adjacentPairs.every(([[a_cost, a_length], [b_cost, b_length]]) =>
        (a_cost === b_cost ? a_length <= b_length : a_cost <= b_cost)),

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+ 2 other calls in file

arraydemo.js

GitHub: Hupeng7/es6demo

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let uniqWith1 = _.uniqWith(uniqWithArr, _.isEqual);
console.log('uniqWith1--->', uniqWith1);
//uniqWith1---> [ { x: 1, y: 2 }, { x: 2, y: 1 } ]


//_.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);

+ 2 other calls in file

index.js

GitHub: tynes/document-enricher

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})
.then(data => {
  const files = data[0].map(file => file.toString());
  const stats = data[1];
  // create tuples, [0] - directory name, [1] - stats object
  const relatedData = _.zip(files, stats);
  // filter for directories only
  return relatedData.filter(d => d[1].isDirectory());
})
.then(directories => {

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