Benchmark: sdfsfd - MeasureThat.net

Script Preparation code:

var str = 'Abcd efghij klmnopqrstuv wxy Abcd efghij klmnopqrstuv wxy Abcd efghij klmnopqrstuv wxyAbcd efghij klmnopqrstuv wxy Abcd efghij klmnopqrstuv wxy Abcd efghij klmnopqrstuv wxy';
var regexForHighlight = new RegExp('c', "gi")

Tests:

Split
str.split(regexForHighlight)
Match
str.match(regexForHighlight)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Split
Match

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

I'll break down the provided JSON and explain what's being tested, compared, and some pros/cons of each approach.

**Benchmark Definition**

The benchmark is testing two functions: `str.split(regexForHighlight)` and `str.match(regexForHighlight)`. The script preparation code generates a string `str` containing repeated patterns "Abcd efghij klmnopqrstuv wxy" to test the performance of these two functions. The regular expression `regexForHighlight` is used to match the pattern "c".

**Options Compared**

The benchmark compares the execution times of:

1. **Split**: `str.split(regexForHighlight)`: splits the string into substrings at each occurrence of the pattern "c".
2. **Match**: `str.match(regexForHighlight)`: searches for the first occurrence of the pattern "c" in the string.

**Pros and Cons**

* **Split**:
	+ Pros: Can be faster if you need to process multiple occurrences of a pattern.
	+ Cons: Creates an array of substrings, which can lead to higher memory usage compared to `match`.
* **Match**:
	+ Pros: Returns a match object if found, which can be more memory-efficient than creating an array.
	+ Cons: May not be as fast as `split` if you need to process multiple occurrences.

The choice between `split` and `match` depends on the specific use case. If you only need to find one occurrence of a pattern, `match` might be faster. However, if you need to process multiple occurrences, `split` could be a better option.

**Library/Functionality**

* **RegExp**: The regular expression engine used for `regexForHighlight`. RegExp is a built-in JavaScript function that allows creating and manipulating patterns for matching strings.

**Special JS Feature/Syntax**

The benchmark uses the "gi" flags in the RegExp, which stands for:

* "i": performs case-insensitive matching
* "g": enables global matching (matches all occurrences of the pattern, not just the first one)

These flags are used to ensure that the regex engine handles both uppercase and lowercase "c"s.

**Other Alternatives**

If you need to process strings with patterns, other alternatives might include:

* Using a dedicated string processing library like String.prototype.replace() or String.prototype.search().
* Utilizing a regular expression-based pattern matching service like RegEx101.
* Implementing custom string searching algorithms using JavaScript's Array.prototype.indexOf() and Array.prototype.slice().

Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36

Browser/OS: Chrome 75 on Mac OS X 10.14.2

View result in a separate tab

Test name	Executions per second
Split	1669079.8 Ops/sec
Match	1783133.2 Ops/sec

Related benchmarks:

sdfsfd (version: 0)

sdf

Comparing performance of: Split vs Match

Created: 5 years ago by: Guest

Jump to the latest result

Split

Match

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):