Benchmark: lodash vs un - MeasureThat.net

HTML Preparation code:


<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js'></script>
<script type="text/javascript">
  window.lodash = _;
  _ = null;
</script>
<script src='https://cdn.jsdelivr.net/npm/underscore@1.12.1/underscore-min.js'></script>
<script type="text/javascript">
  window.underscore = _;
  _ = null;
</script>

Script Preparation code:

function arrayDiff(a, b) {
    const setB = new Set(b);
    return a.filter(x => !setB.has(x));
}
var array1 = [155738, 215577, 215613, 215535, 215765, 215488, 215778, 215641, 215750, 215476, 215565, 215677, 215631, 215655, 215552, 215544, 215642, 215529, 215533, 215531, 215615, 215686, 215512, 215584, 157618, 215586, 215692, 215653, 215483, 215599, 215542, 215473, 215450, 215459, 215651, 215629, 215463, 215567, 215645, 215788, 215787, 215779, 215766, 215751, 215693, 215688, 215687, 215678, 215656, 215654, 215652, 215646, 215644, 215643, 215632, 215630, 215616, 215614, 157619, 215600, 155739, 215587, 215585, 215568, 215566, 215489, 215553, 215545, 215543, 215536, 215534, 215532, 215530, 215513, 215484, 215477, 215474, 215464, 215460, 215451];
var array2 = [155738, 215273, 214753, 215144, 215242, 214646, 214738, 214905, 215577, 214922, 215613, 214624, 215312, 215202, 215430, 215037, 215094, 215200, 215142, 156161, 215189, 215016, 215198, 215081, 215535, 215765, 215071, 215488, 215778, 214767, 215641, 214673, 215349, 215157, 214655, 215750, 215246, 215270, 215476, 215140, 215565, 215677, 215441, 215631, 215334, 215655, 215552, 215544, 215407, 215642, 214826, 214887, 215105, 214723, 214907, 215166, 215529];

Tests:

underscore
underscore.difference(array1, array2);
lodash
lodash.difference(array1, array2)
vanila
arrayDiff(array1, array2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
underscore
lodash
vanila

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

**Benchmark Explanation**

The provided JSON represents a JavaScript microbenchmark test case for comparing the performance of three different approaches to calculate the difference between two arrays: `underscore`, `lodash`, and a vanilla JavaScript implementation (`vanila`).

**Options Compared**

*   **Lodash (underscore)**: The Lodash library provides a utility function `difference()` that can be used to find the difference between two arrays.
*   **Lodash alternative (underscore)**: This is an alternative implementation of the `difference()` function, but it's not the official one from Lodash. It seems like this test case is using a buggy or outdated version of the underscore library.
*   **Vanilla JavaScript (`vanila`)**: The vanilla JavaScript implementation uses a simple array filter approach to find the difference between two arrays.

**Pros and Cons**

### Lodash (underscore)

Pros:

*   Well-tested and widely used utility library.
*   Provides a clear and concise API for finding differences between arrays.

Cons:

*   May have some performance overhead due to its complexity.

### Lodash alternative (underscore)

Pros: None mentioned in the benchmark data

Cons: The implementation seems buggy or outdated, which may lead to incorrect results or performance issues.

### Vanilla JavaScript (`vanila`)

Pros:

*   No dependencies, making it easy to integrate and perform well.
*   Lightweight and simple implementation.

Cons:

*   May not be as efficient or robust as the Lodash solution.

**Other Considerations**

The benchmark measures the execution frequency of each approach in a specific browser environment. This allows for an apples-to-apples comparison between the three options.

### Library: Underscore.js

Underscore.js is a popular JavaScript utility library that provides functional programming helpers, including array manipulation functions like `difference()`. It's designed to be compact and performant, making it suitable for applications where speed is crucial.

In this benchmark, the test case uses an older version of underscore (1.12.1) which may not have been updated with some features or optimizations since its initial release.

### Special JavaScript Features/Syntax

None mentioned in the provided benchmark data.

**Other Alternatives**

For array differences, other libraries like `moment` or `ramda` also provide efficient solutions. However, these are not included in this specific benchmark.

If you need more robust and modern approaches to array manipulation or want to explore other alternatives:

*   Consider using a library like `fast-levenshtein` for array comparisons.
*   Look into the `filter()` method for finding differences between arrays.
*   Use `Set` data structures for efficient lookup and filtering.

Related benchmarks:

lodash vs un (version: 0)

Comparing performance of: underscore vs lodash vs vanila

Created: 5 years ago by: Guest

Jump to the latest result

underscore

lodash

vanila

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):