Benchmark: string comparison vs array includes pt2

Script Preparation code:

function stringCompare(x) {
  return x === '' || x === 'USA';
}

function arrayIncludes(x) {
  return ['', 'USA'].includes(x);
}

Tests:

string compare
stringCompare('abc');
array includes
arrayIncludes('abc');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
string compare
array includes

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 dive into the world of JavaScript microbenchmarks!

The provided JSON represents a benchmark test case on MeasureThat.net, which allows users to create and run JavaScript microbenchmarks. In this specific case, we have two individual test cases:

1. `stringCompare('abc');`
2. `arrayIncludes('abc');`

**Options being compared:**

In the first test case (`stringCompare('abc');`), we're comparing the performance of a custom function `stringCompare(x)` that returns `true` if `x` is either an empty string or "USA". The comparison is done using the triple equals operator (`===`) and the OR operator (`||`).

In the second test case (`arrayIncludes('abc');`), we're comparing the performance of another custom function `arrayIncludes(x)` that uses the `includes()` method on an array containing two values: an empty string and "USA".

**Pros and Cons of different approaches:**

1. **String comparison using `===` and `||`:**
	* Pros:
		+ Simple and intuitive code.
		+ Easy to read and understand.
	* Cons:
		+ May not work as expected for non-ASCII characters or edge cases (e.g., null, undefined).
		+ Performance might be slower due to the use of `===` and the OR operator.
2. **Array includes method:**
	* Pros:
		+ Fast and efficient, thanks to the optimized implementation in modern JavaScript engines.
		+ Handles edge cases and non-ASCII characters correctly.
	* Cons:
		+ May have a higher overhead due to the need for function calls and array lookup.

**Library usage:**

In both test cases, we're using the `includes()` method on an array. The `includes()` method is a part of the ECMAScript standard since ES6 (ECMAScript 2015) and is implemented in most modern JavaScript engines.

**Special JS feature or syntax:**

None mentioned in this specific benchmark case.

**Other alternatives:**

For string comparison, alternative approaches could include:

1. **Using `===` with explicit type checking:** For example, `x === '' || x === 'USA' && typeof x === 'string';`
2. **Using a regular expression:** For example, `/^ USA$/i.test(x) === true`

For array includes, an alternative approach could be to use a simple loop:

1. **Loop-based implementation:** `return ['', 'USA'].indexOf(x) !== -1;`

These alternatives are not as efficient or readable as the original implementations using `includes()` method, but they demonstrate different ways of achieving similar results.

Keep in mind that microbenchmarks like these can be highly dependent on specific JavaScript engines, hardware configurations, and other factors. The optimal solution may vary depending on the specific use case and requirements.

Related benchmarks:

string comparison vs array includes pt2 (version: 0)

Comparing performance of: string compare vs array includes

Created: 2 years ago by: Guest

Jump to the latest result

string compare

array includes

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):