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How to use the partition function from lodash

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

lodash.partition is a function that creates two arrays based on a given array and a predicate function, where one array contains values that passed the predicate function and the other contains values that didn't.

lodash-contrib.commonjs.js

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module.exports.padEnd              = _.padEnd;
module.exports.padStart            = _.padStart;
module.exports.parseInt            = _.parseInt;
module.exports.partial             = _.partial;
module.exports.partialRight        = _.partialRight;
module.exports.partition           = _.partition;
module.exports.partitionBy         = _.partitionBy;
module.exports.pick                = _.pick;
module.exports.pickBy              = _.pickBy;
module.exports.pickWhen            = _.pickWhen;

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+ 92 other calls in file

lodash.js

GitHub: mdmarufsarker/lodash

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console.log(map); // => [16, 64]


const orderBy = _.orderBy(['a', 'b', 'c'], ['c', 'a'], ['desc', 'asc']);
console.log(orderBy); // => ['c', 'a', 'b']


const partition = _.partition([1, 2, 3], n => n % 2);
console.log(partition); // => [[1, 3], [2]]


const reduce = _.reduce([1, 2], (sum, n) => sum + n, 0);
console.log(reduce); // => 3

+ 15 other calls in file

How does lodash.partition work?

lodash.partition is a function that takes an array and a predicate function as inputs and returns two arrays: one with elements that satisfy the predicate and one with elements that don't satisfy the predicate.

Here's how it works: for each element in the input array, the predicate function is called with the element as its argument. If the predicate function returns true, the element is added to the first array; otherwise, it is added to the second array. The two arrays are returned as a tuple.

index.js

GitHub: FoodRates/vendors-menu

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  orphans = false,
  supportSets = false
) {
  const { ADD, DELETE, SET } = diff(original, modified, orphans);
  const [_DELETE, _REMOVE] = supportSets
    ? _.partition(
        DELETE,
        (node) =>
          regex.isNumericSubscript$.test(node.path) &&
          (_.isNumber(node.value) || _.isString(node.value)) // @TODO: Support Node Buffer and/or ArrayBuffer sets?

+ 8 other calls in file

partition.js

GitHub: justsimplycoder/vanilla-javascript-vs-underscore-lodash

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  { 'user': 'pebbles', 'age': 1,  'active': false }
];


// lodash
console.log("lod.partition(users, function(o) { return o.active; })", lod.partition(users, function(o) { return o.active; }));
console.log("lod.partition(users, { 'age': 1, 'active': false })", lod.partition(users, { 'age': 1, 'active': false }));
console.log("lod.partition(users, ['active', false])", lod.partition(users, ['active', false]));


console.log('-----------------------------------------------');

+ 2 other calls in file

Ai Example

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const _ = require("lodash");

const nums = [1, 2, 3, 4, 5, 6, 7, 8, 9];

const isEven = (num) => num % 2 === 0;

const [evens, odds] = _.partition(nums, isEven);

console.log(evens); // [2, 4, 6, 8]
console.log(odds); // [1, 3, 5, 7, 9]

In this example, lodash.partition is used to split an array of numbers into two arrays: one containing even numbers, and one containing odd numbers. The isEven function is used as the partitioning criteria, and it determines whether a number is even or odd. The resulting arrays are then logged to the console.

server.js

GitHub: Big-Brother/bitcore-wallet-service-square

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var baseTxpSize = txp.getEstimatedSize();
var baseTxpFee = baseTxpSize * txp.feePerKb / 1000.;
var sizePerInput = txp.getEstimatedSizeForSingleInput();
var feePerInput = sizePerInput * txp.feePerKb / 1000.;

var partitionedByAmount = _.partition(inputs, function(input) {
  return input.satoshis > feePerInput;
});

info.utxosBelowFee = partitionedByAmount[1].length;

+ 3 other calls in file

collections.js

GitHub: sdawood/wip-json-tots

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const skip = (n, enumerator) => iterator(skipGen(n, enumerator)); // TODO: implement take as a stateful transformer/transducer for composability




function partition(collection, predicate, matchesKey = 'matches', rejectsKey = 'rejects', optional = true) {
    const [truthy, falsey] = _.partition(collection, predicate);
    let result = {};
    if (optional) {
        if (!_.isEmpty(truthy)) {
            result[matchesKey] = truthy;

+ 2 other calls in file

collection-functions.js

GitHub: Amorphous121/lodash-js

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// partitionby


// users2 = _.partition(users, o => o.active);
// log(users2); // partion of active users and inactive users;
// users2 = _.partition(users, { active : true});
// log(users2);
// users2 = _.partition(users, ['active', false]);
// log(users2);

+ 5 other calls in file

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