Benchmark: Replace vs Split

Tests:

Split
function split(name){ return name.split('$')[1] } console.log(split('Cleaner$ksdlaskdsa'));
replace
function replace(name){ return name.replace('Cleaner$','') } console.log(replace('Cleaner$ksdlaskdsa'));

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Split
replace

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and understand what's being tested in this benchmark.

**Benchmark Definition**

The provided JSON defines two benchmark tests: `Replace vs Split`. The benchmark is comparing two string replacement algorithms: one that uses the `replace()` method, and another that uses the `split()` method with an array index manipulation (`name.split('$')[1]`).

**Options Compared**

In this benchmark, we have two options being compared:

1. **String Replacement using `replace()`**: This approach uses the built-in `replace()` method to remove a specified substring from a string.
2. **String Replacement using `split()` with array index manipulation**: This approach uses the `split()` method to split the string into an array, and then accesses the second element of the array (`name.split('$')[1]`) to extract the modified string.

**Pros and Cons**

Here are some pros and cons of each approach:

### Replace Method

Pros:

* More readable and concise code
* Easier to understand and maintain
* Built-in method with a clear name and purpose

Cons:

* May be slower for large strings due to the overhead of the `replace()` method
* May not be as efficient if the replacement string is complex or contains special characters

### Split Method with Array Index Manipulation

Pros:

* Can be more efficient for large strings, as it avoids the overhead of the `replace()` method
* Can handle complex replacement patterns with ease

Cons:

* More complex code that may be harder to understand and maintain
* Requires manual array index manipulation, which can lead to errors if not done correctly

**Library Usage**

Neither of these benchmark tests uses any external libraries. The `replace()` method is a built-in JavaScript function, while the `split()` method with array index manipulation relies on the standard JavaScript array API.

**Special JS Features or Syntax**

There are no special JavaScript features or syntax being tested in this benchmark. Both approaches use standard JavaScript language elements and do not rely on any experimental features or browser-specific APIs.

**Other Alternatives**

If you're looking for alternative string replacement methods, here are a few options:

1. **Using `RegExp` objects**: You can use regular expressions to replace strings. This approach provides more flexibility and power than the `replace()` method, but also adds complexity.
2. **Using a custom loop**: You can write a custom loop to iterate through the string and replace substrings manually. This approach can be more efficient for very large strings, but requires more manual effort.

In conclusion, this benchmark is testing two common string replacement algorithms: one using the `replace()` method, and another using the `split()` method with array index manipulation. The choice of algorithm depends on your specific use case and performance requirements.

Latest run results:

Run details: (Test run date: 2025 years ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.167 Safari/537.36

Browser/OS: Chrome 64 on Linux

View result in a separate tab

Test name	Executions per second
Split	64253.1 Ops/sec
replace	64525.0 Ops/sec

Related benchmarks:

Replace vs Split (version: 0)

Comparing performance of: Split vs replace

Created: 6 years ago by: Guest

Jump to the latest result

Split

replace

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 27 days ago):