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lodash.identity
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The Lo-Dash function `_.identity` as a Node.js module generated by lodash-cli.
The lodash.identity package is a utility function that returns the first argument it receives. It is often used as a default iteratee or callback function in various lodash methods.
Basic Usage
The basic usage of lodash.identity is to return the first argument it receives. In this example, it simply returns the number 5.
const identity = require('lodash.identity');
console.log(identity(5)); // Output: 5
Using with Array Methods
Lodash.identity can be used as a callback function in array methods like map. In this example, it returns each element of the array as is.
const identity = require('lodash.identity');
const arr = [1, 2, 3, 4];
const result = arr.map(identity);
console.log(result); // Output: [1, 2, 3, 4]
Using with Lodash Methods
Lodash.identity can be used with other lodash methods like filter. In this example, it returns all elements of the array that are truthy.
const _ = require('lodash');
const identity = require('lodash.identity');
const arr = [1, 2, 3, 4];
const result = _.filter(arr, identity);
console.log(result); // Output: [1, 2, 3, 4]
Ramda is a functional programming library for JavaScript. It provides a similar identity function called R.identity, which also returns the first argument it receives. Ramda focuses more on functional programming paradigms compared to lodash.
Underscore is another utility library for JavaScript that provides a similar identity function. The _.identity function in Underscore works the same way as lodash.identity, returning the first argument it receives. Underscore is often considered a predecessor to lodash.
The Lo-Dash function _.identity
as a Node.js module generated by lodash-cli.
lodash.identity has been tested in at least Node.js 0.6.8-0.10.18.
John-David Dalton |
Blaine Bublitz | Kit Cambridge | Mathias Bynens |
FAQs
The modern build of lodash’s `_.identity` as a module.
The npm package lodash.identity receives a total of 413,384 weekly downloads. As such, lodash.identity popularity was classified as popular.
We found that lodash.identity demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
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