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flattendepth

What is the _.flattenDepth() method in Lodash?

Shubham Singh Kshatriya

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

Overview

The _.flattenDepth() method in Lodash is used to flatten an array up to a given depth, recursively.

Syntax

_.flattenDepth(array, depth)

Parameters

This method accepts the following parameters:

  • array: This is the array to be flattened.
  • depth: This is the depth up to which the array is to be flattened.

    Return value

    This method returns a flattened array.

    Example

    Let’s look at an example of the _.flattenDepth() method in the code snippet below:

    Console
    Implementation of the _.flattenDepth() method

    Explanation

    In the HTML tab:

    • Line 5: We import the lodash script.

    In the JavaScript tab:

    • Line 2: We create an array and initialize it with a few values.
    • Line 5: We create a variable depth and initialize it with 2.
    • Line 8: We use the _.flattenDepth() method to flatten the array up to the given depth.
    • Line 11: We print the output to the console.

    Output

    We see an array in which all the values are recursively flattened up to the given depth.

    RELATED TAGS

    lodash
    communitycreator
    method
    flattendepth

    CONTRIBUTOR

    Shubham Singh Kshatriya

    Grokking Modern System Design Interview for Engineers & Managers

    Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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