Benchmark: Object array using lodash for vs native for loop

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Tests:

object array _.some
var a = [{marble: "hihi0", text:'hello'}, {marble: "hihi1", text:'a'}, {marble: "hihi2", text:'bc'}]; for(let i = 0; i < a.length; i++) { }
object array _.for
var a = [{marble: "hihi0", text:'hello'}, {marble: "hihi1", text:'a'}, {marble: "hihi2", text:'bc'}]; _.forEach(a, (i) => { });

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Suite status: <idle, ready to run>

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Test case name	Result
object array _.some
object array _.for

Fastest: N/A

Slowest: N/A

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

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I'll break down the provided benchmark for you.

**Overview**

The test case is designed to measure the performance difference between using Lodash's `some` and `forEach` functions on an object array in JavaScript. The benchmark aims to compare the speed of these two approaches.

**Library Used: Lodash**

Lodash is a popular JavaScript utility library that provides various helper functions for tasks like string manipulation, array operations, and more. In this case, we're using it to provide the `some` and `forEach` functions.

**Options Compared**

The benchmark compares the performance of two options:

1. **Native For Loop**: Using a traditional for loop to iterate over the object array.
2. **Lodash's some and forEach functions**: Using Lodash's optimized implementation of these functions, which are designed to work efficiently with arrays.

**Pros and Cons:**

* **Native For Loop**:
	+ Pros: Simple and well-understood by most developers.
	+ Cons: Can be slower due to the overhead of the for loop and array indexing.
* **Lodash's some and forEach functions**:
	+ Pros: Optimized for performance, leveraging the language's optimizations (e.g., caching) and potentially faster than a native for loop.
	+ Cons: Requires including the Lodash library in the test, which may add overhead.

**Other Considerations**

* The benchmark is run on multiple executions per second, which provides an accurate measure of performance.
* The testing environment appears to be a Chrome 102 browser on a Mac OS X 10.15.7 device.

**Special JS Feature or Syntax: None mentioned**

There are no special JavaScript features or syntax used in this test case.

**Alternatives**

Other alternatives for iterating over arrays include:

1. **For...of Loop**: A newer, more concise way of iterating over arrays.
2. **Array.prototype.forEach()**: Similar to Lodash's `forEach` function but part of the standard library.
3. **Array.prototype.map(), filter(), reduce()**: These functions can be used in conjunction with a for loop or as standalone methods.

In summary, this benchmark aims to compare the performance of using native JavaScript loops versus optimized libraries like Lodash's `some` and `forEach` functions on an object array.

Related benchmarks:

Object array using lodash for vs native for loop (version: 0)

Comparing performance of: object array _.some vs object array _.for

Created: 3 years ago by: Guest

Jump to the latest result

object array _.some

object array _.for

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):