Benchmark: String.Split and String.Match

Script Preparation code:

string = "This benchmark is to ask the ageold question, will it fast? We are splitting a string at spaces with two methods.";
regex = /\S+/gi;

Tests:

String.split
string.split(" ")
String.match
string.match(regex)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
String.split
String.match

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:146.0) Gecko/20100101 Firefox/146.0

Browser/OS: Firefox 146 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
String.split	2671643.2 Ops/sec
String.match	1453464.5 Ops/sec

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, compared, and their pros/cons.

**Benchmark Description**

The benchmark compares two JavaScript methods: `String.split()` and `String.match()`. Both methods are used to process strings in different ways. The goal is to measure which method is faster when:

1. Splitting a string into an array of substrings using spaces as delimiters (`string.split(" ")`).
2. Matching a regular expression (regex) against a string (`string.match(regex)`), where the regex `/\\S+/gi/` matches one or more non-space characters globally.

**Options Compared**

The benchmark tests two main options:

1. `String.split()`: This method splits a string into an array of substrings using spaces as delimiters. The resulting array contains the individual words from the original string.
2. `String.match()`: This method searches for a pattern in a string and returns all matches, or null if no match is found.

**Pros/Cons**

Here's a brief summary of each approach:

1. **`String.split()`**:
	* Pros: Simple to use, efficient for splitting strings at specific delimiters.
	* Cons: Can be slow for very large strings or when dealing with complex delimiter patterns (e.g., regex).
2. **`String.match()`**:
	* Pros: Fast and flexible for matching patterns in strings, especially when using regular expressions.
	* Cons: Can be slower than `split()` for simple string splitting tasks, and may not handle edge cases well.

**Library/Dependencies**

There is no specific library mentioned in the benchmark definition. However, it's likely that the JavaScript engine or runtime environment being tested (e.g., V8 in Chrome) provides these built-in methods.

**Special JS Features/Syntax**

The benchmark uses a regex pattern `/\\S+/gi/`, which matches one or more non-space characters globally (`g` flag). This is not a special feature per se, but rather a specific use case for the `String.match()` method.

**Other Alternatives**

If you were to reimplement these benchmarks in another language or environment, you might consider using:

1. String manipulation libraries (e.g., libstring or std::string) for string splitting and matching.
2. Regular expression engines (e.g., PCRE or Oniguruma) for pattern matching.

In the context of this benchmark, it's primarily focused on comparing the performance of these two built-in JavaScript methods.

Related benchmarks:

String.Split and String.Match (version: 0)

We are testing String.split with a string input against String.match with a regex input, both will output an array.

Comparing performance of: String.split vs String.match

Created: 6 years ago by: Registered User

Jump to the latest result

String.split

String.match

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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