Benchmark: String.match - MeasureThat.net

Tests:

Array.includes
'foobar'.includes('foo'); 'qwertyuiopfoobar'.includes('foo'); 'bazbar'.includes('foo');
String.match
'foobar'.match(/foo/); 'qwertyuiopfoobar'.match(/foo/); 'bazbar'.match(/foo/);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.includes
String.match

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON and explain what's being tested.

**Benchmark Definition**

The benchmark is defined as a JavaScript function that performs two different operations:

1. **String.match**: This function tests the execution of the `match()` method on a string, which searches for a pattern (in this case, `/foo/`) in the string.
2. **Array.includes**: Although not directly shown in the JSON, it's mentioned in the "Individual test cases" section as a separate benchmark definition.

The purpose of this benchmark is to compare the execution performance of these two operations on different strings.

**Options Compared**

In the "Individual test cases" section, we have two benchmark definitions:

1. **String.match**
	* This function tests the `match()` method on three different strings:
		+ `'foobar'.match(/foo/);`
		+ `'qwertyuiopfoobar'.match(/foo/);`
		+ `'bazbar'.match(/foo/);`
2. **Array.includes**
	* This benchmark definition is not shown in the JSON, but it's mentioned as a separate test case.

**Pros and Cons of Different Approaches**

1. **String.match**: This approach uses a regular expression to search for a pattern in the string. The pros are:
	* Efficient for searching large strings with specific patterns.
	* Can be optimized using techniques like caching or memoization.
	* The `match()` method is a built-in JavaScript function, so it's likely to be implemented efficiently.
However, the cons are:
	* May not be suitable for all types of searches (e.g., searching for a substring).
	* Can be slow if the pattern is complex or the string is very large.
2. **Array.includes**: This approach uses the `includes()` method on an array to search for an element. The pros are:
	* Generally faster than `String.match` for smaller strings.
	* Can be optimized using techniques like caching or memoization.
However, the cons are:
	* May not be suitable for searching large strings with specific patterns.
	* Can be slow if the array is very large.

**Library Usage**

None of the benchmark definitions use any external libraries. However, it's worth noting that some JavaScript engines may provide additional optimizations or features for these operations (e.g., the `RegExp` object used in `String.match`).

**Special JS Features or Syntax**

The only special feature mentioned is the use of a regular expression (`/foo/`) in the `String.match` benchmark. Regular expressions are a powerful tool in JavaScript, but they can also introduce additional complexity and overhead.

**Other Alternatives**

If you wanted to add more test cases or alternative approaches, you could consider:

1. Using different types of search operations (e.g., `indexOf()`, `lastIndexOf()`, `slice()`).
2. Searching for substrings instead of patterns.
3. Comparing the performance of other JavaScript engines or versions.

Keep in mind that adding too many test cases can increase the complexity and variability of the benchmark, making it more difficult to interpret results accurately.

Related benchmarks:

String.match (version: 0)

Matching a string against more than one possibility.

Comparing performance of: Array.includes vs String.match

Created: 4 years ago by: Guest

Jump to the latest result

Array.includes

String.match

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):