Benchmark: sort vs localcompare

HTML Preparation code:

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

Script Preparation code:

var users = [
  { 'username': 'tester1', 'age': 32, 'active' : true, 'rank' : 3 },
  { 'username': 'Tester2', 'age': 41, 'active' : true, 'rank' : 2 },
  { 'username': 'Tester3', 'age': 22, 'active' : true, 'rank' : 1 },
  { 'username': 'sester3', 'age': 11, 'active' : true, 'rank' : 4 },
  { 'username': 'aester3', 'age': 55, 'active' : true, 'rank' : 5 },
  { 'username': 'bester3', 'age': 32, 'active' : true, 'rank' : 6 }
]

Tests:

js_sort
users.sort(function(a,b) { a = a.username.toLowerCase(); b = b.username.toLowerCase(); if (a == b) return 0; if (a > b) return 1; return -1; });
localcompare
users.sort(function(a,b) { return a.username.localeCompare(b.username); });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
js_sort
localcompare

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 and explain what's being tested.

**Benchmark Definition**

The benchmark is comparing two sorting algorithms: `sort` with a custom comparison function, and `localeCompare`. The benchmark definition json includes the script preparation code, which defines an array of user objects (`users`). Each user object has properties like `username`, `age`, `active`, and `rank`.

**Options being compared**

Two options are being compared:

1. **Custom Comparison Function**: In this approach, a custom comparison function is provided as an argument to the `sort` method. This function takes two arguments (`a` and `b`) and returns an integer value that determines their order in the sorted array. In this case, the comparison function converts both `username`s to lowercase using the `toLowerCase()` method and then compares them lexicographically.
2. **LocaleCompare**: The second option uses the `localeCompare` method to compare strings. This method returns a negative value if the first string is less than the second, zero if they are equal, and a positive value if the first string is greater.

**Pros and Cons**

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

* **Custom Comparison Function**:
	+ Pros: More control over the comparison logic, allows for custom sorting behavior.
	+ Cons: Can be slower due to the additional function call and potential overhead of `toLowerCase()`.
* **LocaleCompare**:
	+ Pros: Faster and more concise, uses the browser's built-in string comparison algorithm.
	+ Cons: Less control over the comparison logic, may not work as expected for non-ASCII characters or specific cultures.

**Library**

The benchmark includes a reference to Lodash (version 4.17.5) in the HTML preparation code using `<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>`. However, since the custom comparison function does not use any Lodash functions, the library is not actively used in this specific benchmark.

**Special JS feature or syntax**

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

**Other considerations**

When running benchmarks like this one, it's essential to consider factors such as:

* Browser and platform support
* Environment (e.g., headless vs. browser-based testing)
* System resources (CPU, memory, etc.)
* Cache effects (clearing cache before running the benchmark)

**Alternatives**

If you wanted to compare these sorting algorithms with other approaches, you could consider adding additional test cases that:

1. Compare with other custom comparison functions or libraries.
2. Use different data structures or algorithms for sorting (e.g., merge sort, quicksort).
3. Test on multiple browsers and platforms.
4. Measure performance under varying system load conditions.

Some potential alternatives to explore include:

* Other sorting algorithms like `Array.prototype.sort()` with a custom comparison function or the `compare` function from the `moment.js` library for date-based comparisons.
* Using a data structure like a binary search tree or heap for faster lookups and sorted data.
* Testing on different platforms, such as mobile devices or multiple versions of Chrome.

Keep in mind that when comparing different algorithms and approaches, it's essential to carefully consider the test environment, system resources, and expected performance characteristics to ensure accurate results.

Related benchmarks:

sort vs localcompare (version: 0)

Comparing performance of: js_sort vs localcompare

Created: 4 years ago by: Guest

Jump to the latest result

js_sort

localcompare

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):