Benchmark: Trim All Whitespace

Script Preparation code:

str = ' a b    c d e   f g   ';

Tests:

Replace Regex
str.replace(/\s/g,' ')
Split & Join
str.split(" ").join(" ");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Replace Regex
Split & Join

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model gemma2:9b, generated one year ago):

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This benchmark tests different ways to remove all whitespace from a string in JavaScript.

**Options Compared:**

* **`str.replace(/\\s/g,' ')`**: This method uses a regular expression (`/\\s/g`) to find all whitespace characters (spaces, tabs, newlines) and replaces them with a single space. 
    * **Pros**: Concise and often considered the most readable solution for this specific task.
    * **Cons**: Regular expressions can be slower than some other approaches in certain situations due to their parsing overhead.

* **`str.split(\" \").join(\" \");`**: This method splits the string into an array of words using spaces as delimiters, then joins the words back together with a single space. 
    * **Pros**:  Potentially faster than regular expressions for large strings or complex patterns. Doesn't involve the parsing overhead of regex.
    * **Cons**: May be less intuitive than using a dedicated whitespace removal regex.

**Other Considerations:**

* **String length:** The performance difference between these methods might become more significant with longer strings. 
* **Whitespace variations:** If you need to remove specific types of whitespace (e.g., tabs only), the regex approach offers more control.

**Alternatives:**

* JavaScript provides built-in string methods like `trim()` and `trimStart()`/`trimEnd()` for removing leading/trailing whitespace. However, these don't remove all whitespace within a string.
* Libraries like Lodash or Underscore offer utility functions specifically designed for manipulating strings, which might provide optimized solutions for this task.

Let me know if you'd like to explore any of these options in more detail!

Related benchmarks:

Trim All Whitespace (version: 0)

Comparing performance of: Replace Regex vs Split & Join

Created: 3 years ago by: Guest

Jump to the latest result

Replace Regex

Split & Join

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model gemma2:9b, generated one year ago):