Benchmark: toCamelCase - MeasureThat.net

Script Preparation code:

function toCamelCase(str) {
  let s =
    str &&
    str
      .match(/[A-Z]{2,}(?=[A-Z][a-z]+[0-9]*|\b)|[A-Z]?[a-z]+[0-9]*|[A-Z]|[0-9]+/g)
      .map(x => x.slice(0, 1).toUpperCase() + x.slice(1).toLowerCase())
      .join('');
  return s.slice(0, 1).toLowerCase() + s.slice(1);
};

function toCamelCaseEnhanced(str) {
  return str.replace(/^([A-Z])|[\s-_]+(\w)/g, (_, p1, p2) => {
    return p2 ? p2.toUpperCase() : p1.toLowerCase();
  });
};

Tests:

original
toCamelCase('some_database_field_name'); toCamelCase('Some label that needs to be camelized'); toCamelCase('some-javascript-property'); toCamelCase('some-mixed_string with spaces_underscores-and-hyphens');
enhanced
toCamelCaseEnhanced('some_database_field_name'); toCamelCaseEnhanced('Some label that needs to be camelized'); toCamelCaseEnhanced('some-javascript-property'); toCamelCaseEnhanced('some-mixed_string with spaces_underscores-and-hyphens');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
original
enhanced

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36

Browser/OS: Chrome 124 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
original	568927.8 Ops/sec
enhanced	485370.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net.

**Benchmark Definition**

The provided JSON represents a benchmark for the `toCamelCase` function, which converts input strings to camelCase notation. The function has two implementations:

1.  `toCamelCase`: This is the original implementation, which uses regular expressions and string manipulation to achieve camelCase conversion.
2.  `toCamelCaseEnhanced`: This enhanced implementation uses a different approach with a regular expression that replaces specific patterns in the input string.

**Options Compared**

The benchmark compares the performance of two approaches:

1.  **Original Implementation (`toCamelCase`)**: This implementation uses traditional regular expressions and string manipulation to achieve camelCase conversion.
2.  **Enhanced Implementation (`toCamelCaseEnhanced`)**: This enhanced implementation uses a more efficient approach with a regular expression that replaces specific patterns in the input string.

**Pros and Cons of Each Approach**

1.  **Original Implementation (toCamelCase)**:
    *   **Pros**: Simple to understand, easy to maintain.
    *   **Cons**: May be slower due to the overhead of regular expressions and string manipulation.
2.  **Enhanced Implementation (toCamelCaseEnhanced)**:
    *   **Pros**: More efficient, potentially faster than the original implementation.
    *   **Cons**: May be more complex to understand, require a deeper understanding of regular expression syntax.

**Library Usage**

The `toCamelCase` function uses JavaScript's built-in string methods and regular expressions. There is no explicit library usage in this benchmark.

**Special JS Feature/Syntax**

There are no special JS features or syntax used in this benchmark. The implementations rely solely on standard JavaScript functionality.

**Other Alternatives**

If you're looking for alternative approaches to achieve camelCase conversion, consider the following:

1.  **Using a dedicated library**: You can use a library like `camelcase` or `camelCase` that provides a simple and efficient way to convert strings to camelCase notation.
2.  **Implementing a custom solution**: You can implement your own camelCase converter using a different approach, such as parsing the input string and applying transformation rules.

Keep in mind that the choice of implementation ultimately depends on your specific requirements, performance needs, and personal preferences.

Related benchmarks:

toCamelCase (version: 0)

Comparing performance of: original vs enhanced

Created: 7 years ago by: Guest

Jump to the latest result

original

enhanced

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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