Benchmark: lodash filter vs splice

HTML Preparation code:

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

Script Preparation code:

window.test = [
  { id: 1, source: true },
  { id: 2, source: true },
  { id: 3, source: false }
]

Tests:

lodash filter
_.filter(window.test, function (item) { return item.source === false })
array splice
window.test.splice(_.find(window.test, ['source', false]), 1)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash filter
array splice

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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**Benchmark Definition**

The provided JSON represents a benchmark that compares two approaches to filter an array: using Lodash's `filter` method and using `Array.prototype.splice`. The benchmark is defined by two test cases:

1. **Lodash Filter**: The first test case uses the `_.filter` method from the Lodash library to filter the `window.test` array, which contains objects with `source` property. The filter function returns only the items where `source` is false.
2. **Array Splice**: The second test case uses the `splice` method on the `window.test` array, but instead of splicing a specific index, it finds the first item in the array that matches a certain condition (`['source', false]`) and removes it.

**Options Compared**

In this benchmark, we have two options being compared:

* **Lodash Filter**: This approach uses the Lodash library's `filter` method to create a new filtered array. It's likely to be faster because it avoids modifying the original array.
* **Array Splice**: This approach modifies the original array by finding and removing the first item that matches the condition.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Lodash Filter**:
	+ Pros: faster, doesn't modify the original array
	+ Cons: requires an additional library dependency (Lodash)
* **Array Splice**:
	+ Pros: modifies the original array, potentially more efficient for large arrays
	+ Cons: slower, because it involves iterating over the entire array

**Library and Purpose**

The Lodash library is a popular utility library that provides various functional programming helpers. In this benchmark, `_.filter` is used to create a new filtered array without modifying the original.

**Special JS Feature or Syntax**

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

**Other Considerations**

When choosing between these approaches, consider the following:

* If you need to filter an array frequently and want to avoid modifying it, Lodash's `filter` method might be a better choice.
* If performance is critical and you're working with large arrays, using `Array.prototype.splice` might be more efficient.

**Alternative Approaches**

Other alternatives for filtering arrays include:

* Using the native `Array.prototype.filter()` method without Lodash
* Implementing a custom filter function from scratch

Keep in mind that these alternatives might not match the performance of the benchmarked approaches.

Related benchmarks:

lodash filter vs splice (version: 0)

Comparing performance of: lodash filter vs array splice

Created: 8 years ago by: Guest

Jump to the latest result

lodash filter

array splice

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):