Benchmark: lodash merge vs lodash defaults - K

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Tests:

lodash merge
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = _.merge({}, a, b);
lodash defaults
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = _.defaults({}, b, a);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash merge
lodash defaults

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:107.0) Gecko/20100101 Firefox/107.0

Browser/OS: Firefox 107 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
lodash merge	4935624.5 Ops/sec
lodash defaults	6531859.0 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested, compared options, pros and cons, library details, special JS features or syntax, and alternative approaches.

**Benchmark Overview**

The provided benchmark tests the performance of two JavaScript functions: `lodash.merge()` and `lodash.defaults()`. These functions are used to merge and set default values in objects, respectively.

**Options Compared**

The two options being compared are:

1. **`lodash.merge()`**: This function merges two or more objects into a single object. It returns a new object with the merged properties.
2. **`lodash.defaults()`**: This function sets default values for an object based on a source object and optional target object.

**Pros and Cons**

* `lodash.merge()`: Pros:
	+ Allows merging of multiple objects into one.
	+ Can be useful when working with complex data structures.
* Cons:
	+ Returns a new object, which might incur additional memory allocation overhead.
	+ May not be as efficient for large datasets.
* `lodash.defaults()`: Pros:
	+ Sets default values for an object, which can simplify code and reduce errors.
	+ Can improve performance by avoiding unnecessary property lookups.
* Cons:
	+ Only sets default values; doesn't merge multiple objects.
	+ Might result in slower performance if dealing with large datasets.

**Library Details**

Both functions rely on the Lodash library. Lodash is a utility belt for JavaScript that provides a collection of functional programming helpers, including `merge()` and `defaults()`. The library helps simplify common tasks and promotes reusable, modular code.

**Special JS Feature or Syntax (None)**

There are no special JavaScript features or syntax mentioned in this benchmark.

**Other Alternatives**

While Lodash is a popular choice for utility functions like `merge()` and `defaults()`, other libraries and approaches exist. Some alternatives include:

* Using the built-in `Object.assign()` method, which also merges objects.
* Creating custom merge and defaults functions using JavaScript's `Object.create()` and `Object.defineProperty()` methods.
* Utilizing ES6+ features like object spread syntax (`{ ... }`) or template literals for merging and setting default values.

However, these alternatives might require more manual effort and may not offer the same level of convenience and flexibility as Lodash.

Related benchmarks:

lodash merge vs lodash defaults - K (version: 0)

Comparing performance of: lodash merge vs lodash defaults

Created: 4 years ago by: Guest

Jump to the latest result

lodash merge

lodash defaults

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated one month ago):