Benchmark: split vs memoize

Script Preparation code:

string = "vessel.type";
splited = ['vessel', 'type'];

Tests:

String.split
const test = string.split("."); test[0]
Access
splited[0]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String.split
Access

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:121.0) Gecko/20100101 Firefox/121.0

Browser/OS: Firefox 121 on Ubuntu

View result in a separate tab

Test name	Executions per second
String.split	17782372.0 Ops/sec
Access	1827363072.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and explain what's being tested, compared, and analyzed.

**Benchmark Definition**

The test is designed to compare two approaches:

1. **String.match with regex**: This approach uses a regular expression to search for a pattern in a string.
2. **String.split with string**: This approach splits a string into an array of substrings using a specified delimiter (in this case, a period `.`).

**Options being compared**

The test is comparing the execution speed and performance of these two approaches on the same input data: splitting a string at spaces.

**Pros and Cons of each approach**

1. **String.match with regex**:
	* Pros:
		+ Can be more flexible for complex patterns.
		+ Can be optimized using techniques like caching or memoization.
	* Cons:
		+ May have higher overhead due to regular expression parsing and matching.
2. **String.split with string**:
	* Pros:
		+ Generally faster, as it's a built-in array method.
		+ Less overhead compared to regex matching.
	* Cons:
		+ May not be suitable for complex patterns or string manipulation.

**Library usage**

In the benchmark definition, there is no explicit library mentioned. However, it's likely that the JavaScript engine being used (e.g., SpiderMonkey in Firefox) has its own internal optimizations and caching mechanisms that can affect performance.

**Special JS feature**

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

**Alternative approaches**

Other alternatives for string splitting could include:

1. **Substring methods**: Using `string.substring()` or `string.slice()` to extract substrings.
2. **Array.map() and Array.reduce()**: Using array methods to process the split strings.
3. **Regular expression substitution**: Replacing the delimiter with a regex pattern that matches only spaces.

These alternatives might offer different trade-offs in terms of performance, readability, and complexity. The choice of approach depends on the specific requirements of your use case.

I hope this explanation helps!

Related benchmarks:

split vs memoize (version: 0)

Test String.match with regex against String.split with string. We are splitting a string at the spaces.

Comparing performance of: String.split vs Access

Created: 2 years ago by: Guest

Jump to the latest result

String.split

Access

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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