What are the key features of Lodash?

What are the key features of Lodash?

Lodash is a JavaScript utility library that provides helpful functions for common programming tasks. Key features include: 1. Array Manipulation: Functions like map, filter, and reduce for working with arrays. 2. Object Manipulation: Methods for cloning, merging, and manipulating objects. 3. Function Utilities: Debouncing, throttling, and currying functions to optimize performance. 4. Chaining: Allows for method chaining to create more readable code. 5. Performance: Lodash is optimized for speed and efficiency.

Can you give me an example of using _.map?

Sure! The _.map function creates an array of values by running each element in the collection through a given iteratee. For example:

const numbers = [1, 2, 3, 4];
const doubled = _.map(numbers, num => num * 2);
console.log(doubled); // Output: [2, 4, 6, 8]

What about object manipulation functions?

Lodash provides several useful functions for object manipulation, such as:

1. _.assign: Merges own enumerable properties of source objects into the destination object.
2. _.cloneDeep: Creates a deep copy of an object.
3. _.get: Retrieves the value at a given path of an object.

For example:

const obj = { a: 1, b: { c: 2 } };
const clone = _.cloneDeep(obj);
console.log(clone); // Output: { a: 1, b: { c: 2 } }