Benchmark: jeffreytest - MeasureThat.net

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>

Script Preparation code:

window.foo = [{ name: 'cat', age: 1}, {name: 'dog', age: 2}, {name: 'bird', age: 3}];
window.bar = [{ name: 'cat', age: 1}, {name: 'dog', age: 2}, {name: 'bird', age: 3}];

Tests:

_.isEqual
_.isEqual(window.foo, window.bar)
Mine
function deepCheck(a, b) { Object.keys(a).every(key => { return a[key] === b[key]; }); } deepCheck(window.foo, window.bar);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
_.isEqual
Mine

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks, comparing different approaches to measure performance. The provided JSON represents two benchmark definitions: `jeffreytest` (which we'll ignore for now) and two individual test cases: `_.isEqual` and "Mine".

**Test Case 1: _.isEqual**

The first test case uses the Lodash library, specifically the `isEqual` function. This function is used to compare two objects or arrays for deep equality.

* **Library**: Lodash (version 4.17.4)
* **Purpose**: The `isEqual` function checks if two values are deeply equal, meaning that they have the same structure and all corresponding properties are equal.

**Pros**:
* Efficient implementation of deep equality check
* Handles complex data structures, such as arrays with nested objects

**Cons**:
* Adds overhead due to external library dependency
* May not be suitable for very large datasets or high-performance applications

**Test Case 2: "Mine"**

The second test case uses a custom function called `deepCheck`. This function checks if two objects have the same keys and values.

Pros:
* No external library dependency, which might reduce overhead
* Simple implementation, making it easy to understand and maintain

Cons:
* May not be as efficient or robust as Lodash's implementation
* Requires manual management of data structure properties (e.g., handling nested objects)

**Comparison**

Both test cases aim to measure the performance difference between using an external library (`_.isEqual`) versus a custom implementation (`deepCheck`). The Lodash implementation is generally considered more efficient and robust, but it adds overhead due to the external library dependency. The custom `deepCheck` function is simpler but may not be as accurate or performant.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax used in these test cases.

**Alternatives**

If you prefer not to use Lodash, you can implement your own deep equality check using techniques such as:

* Recursive functions to compare object properties
* JSON serialization and deserialization for array comparisons
* Using libraries like jsdiff or diff-match-patch

Alternatively, if you want to avoid custom implementations altogether, you can consider using built-in JavaScript features, such as `Object.keys()` and `every()`, to create a similar comparison function.

Keep in mind that these alternatives might not be as efficient or robust as the Lodash implementation.

Related benchmarks:

jeffreytest (version: 0)

test

Comparing performance of: _.isEqual vs Mine

Created: 6 years ago by: Guest

Jump to the latest result

_.isEqual

Mine

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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