Benchmark: lodash vanilla while test

HTML Preparation code:

<script src="https://cdn.jsdelivr.net/lodash/4.16.0/lodash.min.js"></script>

Script Preparation code:

var values = [{a: 30310}, {b: 100303}, {c: 3040494}]

Tests:

vanilla
let count = 0; let i = 0 let len = values.length for (; i < len; i++) { if (values[i].a != null) { count++; } }
lodash
var count = 0; _.forEach(values, function(v,i) { if (v.a != null) { count++; } })
while
var i = values.length; let count = 0; do { if (values[i] != null) { count++; } } while(--i);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
vanilla
lodash
while

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided benchmark definition and explain what's being tested.

**Benchmark Definition**

The benchmark is created using JSON, which represents three different approaches to iterate over an array of objects in JavaScript:

1. **Vanilla**: Using a traditional `for` loop with an index variable (`i`) to access each element in the array.
2. **Lodash**: Utilizing the `_.forEach()` method from the Lodash library to iterate over the array. This approach is often faster than traditional loops, especially for larger datasets.
3. **While Loop**: Employing a `while` loop with an incrementing index variable (`i`) to access each element in the array.

**Options Compared**

The benchmark compares the performance of these three approaches:

* Vanilla (traditional loop)
* Lodash ( _.forEach() method)
* While Loop ( manual indexing)

**Pros and Cons**

Here's a brief summary of the pros and cons for each approach:

1. **Vanilla**:
	* Pros: Easy to understand, no additional dependencies required.
	* Cons: Can be slower than other approaches, especially for large datasets due to overhead from loop control.
2. **Lodash**:
	* Pros: Often faster than traditional loops, provides a convenient and expressive way to iterate over arrays.
	* Cons: Requires the Lodash library, which adds an extra dependency.
3. **While Loop**:
	* Pros: Can be competitive with traditional loops in terms of performance, eliminates the need for additional dependencies like Lodash.
	* Cons: May have higher overhead due to manual indexing, can lead to errors if not implemented correctly.

**Library and Special JS Feature**

The benchmark uses the Lodash library, which is a popular utility library that provides a set of functional programming helpers. In this case, it's used for its `_.forEach()` method, which allows for concise and expressive iteration over arrays.

There are no special JavaScript features or syntaxes being tested in this benchmark.

**Other Alternatives**

If the vanilla loop approach is not preferred due to performance concerns, other alternatives can be explored:

* Using `for...of` loops (introduced in ES6) instead of traditional `for` loops.
* Utilizing modern array methods like `map()`, `filter()`, and `reduce()` for different types of iterations.
* Leveraging the `at()` or `in` operators for indexed iteration, which can be faster than manual indexing.

Keep in mind that each alternative has its own trade-offs and requirements.

Related benchmarks:

lodash vanilla while test (version: 0)

Comparing performance of: vanilla vs lodash vs while

Created: 7 years ago by: Guest

Jump to the latest result

vanilla

lodash

while

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):