lodash.groupby
Advanced tools
Package description
The lodash.groupby npm package is a utility that allows for the grouping of collection items based on a specified criterion. This can be particularly useful for organizing data, performing aggregations, or simplifying complex collections of objects or arrays by categorizing them into groups.
Grouping by property
This feature allows grouping of objects in an array by a specific property. In the provided code, objects are grouped by their 'age' property.
_.groupBy([{ 'age': 23 }, { 'age': 24 }], 'age')Grouping by computed criterion
This demonstrates grouping elements of an array by a computed criterion, in this case, rounding down the numbers to the nearest whole number using Math.floor.
_.groupBy([6.1, 4.2, 6.3], Math.floor)Grouping by property path
This feature allows for grouping by nested object properties, specified by a path. Here, objects are grouped based on the 'age' property nested under 'user'.
_.groupBy([{ 'user': { 'age': 23 } }, { 'user': { 'age': 24 } }], 'user.age')Underscore is a utility library with similar functionalities to lodash, including a groupBy function. While it offers similar grouping capabilities, lodash is generally considered to have better performance and a more extensive API.
Collect.js provides a convenient wrapper for working with arrays and objects, including a groupBy method similar to lodash's. It is heavily inspired by Laravel's Collections. Unlike lodash, it is tailored more towards a fluent API that mimics Laravel's collection methods.
Readme
The lodash method _.groupBy exported as a Node.js module.
Using npm:
$ {sudo -H} npm i -g npm
$ npm i --save lodash.groupby
In Node.js:
var groupBy = require('lodash.groupby');
See the documentation or package source for more details.
FAQs
The lodash method `_.groupBy` exported as a module.
The npm package lodash.groupby receives a total of 1,932,331 weekly downloads. As such, lodash.groupby popularity was classified as popular.
We found that lodash.groupby demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 3 open source maintainers collaborating on the project.
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