Benchmark: lodash 1 argument against 2

HTML Preparation code:

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

Tests:

only 1 merge argument
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = { d: 'test' }; var d = _.merge(a, b); d = _.merge(d, c);
2 merge arguments
var a = { a: 'oh', b: 'my' }; var b = { c: 'goddess' }; var c = { d: 'test' }; var c = _.merge(a, b, c);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
only 1 merge argument
2 merge arguments

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36

Browser/OS: Chrome 119 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
only 1 merge argument	3546116.5 Ops/sec
2 merge arguments	5089282.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The benchmark definition is a JSON object that describes two test cases:

* The first test case, "only 1 merge argument", tests the behavior of Lodash's `merge` function with only one argument. It creates three objects: `a`, `b`, and `c`, and then merges them together using `_.merge(a, b)`. Finally, it merges the result with `c` again.
* The second test case, "2 merge arguments", tests the behavior of Lodash's `merge` function with two arguments. It creates three objects: `a`, `b`, and `c`, and then merges them together using `_.merge(a, b)`.

**Options compared**

The two test cases compare the performance of Lodash's `merge` function under different conditions:

* **Single merge argument**: Only one object is passed to the `merge` function.
* **Two merge arguments**: Two objects are passed to the `merge` function.

**Pros and Cons of each approach**

Here are some pros and cons of each approach:

* **Single merge argument**:
	+ Pros: May be faster since there's less work to do, as the function only needs to merge one object.
	+ Cons: May not accurately reflect real-world usage, where `merge` is often used with multiple arguments.
* **Two merge arguments**:
	+ Pros: More realistic representation of real-world usage, where `merge` is often used with multiple arguments.
	+ Cons: May be slower due to the additional work required to merge two objects.

**Library and its purpose**

Lodash is a popular JavaScript utility library that provides a wide range of functions for tasks such as array manipulation, object merging, and more. In this benchmark, Lodash's `merge` function is used to combine multiple objects into a single object.

**Special JS feature or syntax**

There are no special features or syntax in these test cases. They're straightforward JavaScript code that demonstrates the usage of Lodash's `merge` function.

**Other alternatives**

If you wanted to write similar benchmarks for other merge functions, you might consider using:

* The built-in `Object.assign()` method: This is a simple and fast way to merge objects.
* Other library implementations of `merge`: Such as `lodash.merge()`, `underscore.merge()`, or `js-merge`.

Keep in mind that these alternatives may have different performance characteristics and usage patterns compared to Lodash's `merge` function.

I hope this explanation helps!

Related benchmarks:

lodash 1 argument against 2 (version: 0)

lodash 1 argument against 2

Comparing performance of: only 1 merge argument vs 2 merge arguments

Created: 2 years ago by: Guest

Jump to the latest result

only 1 merge argument

2 merge arguments

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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