Benchmark: isequal v sortby

HTML Preparation code:

<script src="https://underscorejs.org/underscore-min.js"> </script>

Script Preparation code:

a = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]
b = [20,19,3,2,1,18,6,17,5,10,7,8,13,9,18,4,6,11,14,12,16,15]

Tests:

isequal
_.isEqual(a, b);
sortby
_.sortBy(a, function(n) { return b.indexOf(a); });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
isequal
sortby

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.

Let's break down the benchmark and its test cases.

**Benchmark Definition JSON**

The provided JSON represents a JavaScript microbenchmark, specifically designed to compare the performance of two functions: `_.isEqual` from the Underscore.js library (a utility belt for functional programming) and the built-in sorting functionality using the `sortby` method.

**Script Preparation Code**

The script preparation code defines two arrays, `a` and `b`, which are used as input to the benchmark. `a` contains integers from 1 to 20 in ascending order, while `b` contains the same numbers but in reverse order.

```javascript
a = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]
b = [20,19,3,2,1,18,6,17,5,10,7,8,13,9,18,4,6,11,14,12,16,15]
```

**Html Preparation Code**

The HTML preparation code includes a script tag that loads the Underscore.js library.

```html
<script src="https://underscorejs.org/underscore-min.js"></script>
```

This is likely necessary to provide access to the `_.isEqual` function in the benchmark.

**Individual Test Cases**

There are two test cases:

1. **isequal**

The first test case runs the `_.isEqual(a, b)` function, which compares the contents of arrays `a` and `b` for equality using the Underscore.js library's implementation of the JavaScript Equality Operator (`===`).

2. **sortby**

The second test case runs the `_.sortBy(a, function(n) { return b.indexOf(a); })` function, which sorts array `a` based on the index of each element within array `b`. The `function(n) { return b.indexOf(a); }` closure takes an element from array `a`, finds its index in array `b`, and returns that value. The `_sortBy` function then uses this index to sort array `a`.

**Options Compared**

The two test cases compare the following options:

1. **Built-in Sorting vs. Underscore.js Library**

The first test case (`isequal`) uses the built-in JavaScript Equality Operator (`===`) to compare arrays, while the second test case (`sortby`) uses the `_.sortBy` function from the Underscore.js library.

**Pros and Cons of Each Approach**

**Built-in Sorting (isequal)**

Pros:

* Typically faster and more efficient than using a utility library.
* May be implemented in native code, reducing overhead.

Cons:

* May not provide a consistent or predictable behavior across different browsers or environments.
* Does not guarantee equality between arrays; only checks for structural similarity.

**Underscore.js Library (sortby)**

Pros:

* Provides a more explicit and controlled way to compare arrays.
* Often implemented in optimized JavaScript code, reducing overhead.

Cons:

* May be slower than native implementations due to the added overhead of the library.
* Requires an additional dependency (the Underscore.js library).

**Other Considerations**

When choosing between these two approaches, consider the trade-off between performance and predictability. If you need a fast and reliable way to compare arrays, using built-in JavaScript functionality might be the better choice. However, if you require more control over the comparison process or want to ensure consistent behavior across different environments, the Underscore.js library provides an option.

**Special JS Features or Syntax**

There are no special JavaScript features or syntax used in this benchmark that require explanation.

Related benchmarks:

isequal v sortby (version: 0)

Comparing performance of: isequal vs sortby

Created: 9 years ago by: Guest

Jump to the latest result

isequal

sortby

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):