Benchmark: split join replace vs regex global replace

Tests:

split . join replace
const output = 'com.google.something.anotherthing:package'.split('.').join('/').replace(':', '/')
regex global replace
const output = 'com.google.something.anotherthing:package'.replace(/\.|:/g, '/')
split : join replace
const output = 'com.google.something.anotherthing:package'.split(':').join('/').replace(/\./g, '/')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
split . join replace
regex global replace
split : join replace

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser/OS: Chrome 104 on Mac OS X 10.14.6

View result in a separate tab

Test name	Executions per second
split . join replace	2931689.0 Ops/sec
regex global replace	3682800.0 Ops/sec
split : join replace	2374436.0 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**Benchmark Overview**

The benchmark tests three different approaches to manipulate strings in JavaScript:

1. Split, Join, Replace
2. Regular Expressions (Regex) Global Replace
3. Split, Colon (:) Replacement

**Split, Join, Replace**

This approach involves splitting a string into parts using the dot (`.`) character as the separator, joining the parts back together with slashes (`/`), and then replacing the colon (`:`) characters.

Pros:

* Simple and easy to understand
* Can be implemented in multiple languages (not just JavaScript)

Cons:

* May not work correctly for all input strings or edge cases
* Could lead to performance issues if not optimized

Example implementation:
```javascript
const output = 'com.google.something.anotherthing:package'.split('.').join('/').replace(':', '/');
```
**Regular Expressions (Regex) Global Replace**

This approach uses regular expressions to replace all occurrences of certain patterns in the string. In this case, the pattern is `\\.|:`.

Pros:

* Powerful and flexible for complex pattern matching
* Can be used to replace multiple patterns at once

Cons:

* Can be slow or resource-intensive if not optimized correctly
* May require additional configuration or flags

Example implementation:
```javascript
const output = 'com.google.something.anotherthing:package'.replace(/\\.|:/g, '/');
```
**Split, Colon (:) Replacement**

This approach is similar to the first one, but uses a colon (`:`) as the separator instead of a dot (`.`).

Pros:

* Similar performance characteristics to the split, join, replace approach
* May be more efficient for certain input strings or edge cases

Cons:

* Less intuitive or easy to understand than the split, join, replace approach

Example implementation:
```javascript
const output = 'com.google.something.anotherthing:package'.split(':').join('/').replace(/\\./g, '/');
```
**Libraries and Special Features**

There is no explicit library mentioned in the benchmark definition. However, it's worth noting that regular expressions are a built-in JavaScript feature.

The use of `\\.` and `\\|` in the Regex global replace approach might be seen as special syntax or usage, but it's actually part of the standard regular expression syntax.

**Other Alternatives**

Other approaches to manipulate strings in JavaScript might include:

* Using a library like String.prototype.replace() with a callback function
* Utilizing a different separator or delimiter character
* Employing a more complex string manipulation technique, such as using a regular expression with a capture group

However, the benchmark definition and results are focused on testing these three specific approaches.

Related benchmarks:

split join replace vs regex global replace (version: 0)

Comparing performance of: split . join replace vs regex global replace vs split : join replace

Created: 2 years ago by: Guest

Jump to the latest result

split . join replace

regex global replace

split : join replace

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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