Benchmark: palindrom test - MeasureThat.net

Tests:

es6
const essix = (arg) => [...arg].reverse().join('') === arg essix('kajak') essix('telefon')
loop
const looped = (arg) => { let flag = true; for (let i=0; i<=arg.length/2; i++) { if (arg.charAt(i) !== arg.charAt(arg.length-i-1)) { flag = false; break;} } return flag; } looped('kajak') looped('telefon')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
es6
loop

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

I'd be happy to explain what's being tested in this benchmark.

**What is being tested?**

Measurati.net is testing the performance of JavaScript microbenchmarks on various JavaScript engines and platforms. The benchmarks are designed to measure the execution speed of different approaches for a specific task, in this case, checking if a string is a palindrome (i.e., reading the same backwards as forwards).

**Options compared:**

There are two test cases:

1. **es6**: This benchmark tests the performance of JavaScript 6.0's built-in `reverse()` and `join()` methods to check if a string is a palindrome.
2. **loop**: This benchmark uses a traditional loop-based approach to compare the original string with its reverse, checking if they are equal.

**Pros and cons:**

**es6**:

* Pros:
	+ Uses modern JavaScript features for simplicity and readability.
	+ Potential performance benefits due to optimized engine implementations.
* Cons:
	+ May not work as expected in older JavaScript engines or environments that don't support these features.
	+ Could be slower than the traditional loop-based approach if the engine doesn't optimize these methods.

**loop**:

* Pros:
	+ Portable across different JavaScript engines and platforms, as it's a standard algorithm.
	+ May provide consistent results regardless of engine optimizations.
* Cons:
	+ More verbose and less readable code, potentially introducing performance overhead due to string manipulation.
	+ May be slower than the `es6` approach if the engine can optimize these methods.

**Library used:**

There is no library explicitly mentioned in the benchmark definition or test cases. However, it's worth noting that some modern JavaScript engines (like SpiderMonkey) provide optimized implementations of these built-in methods.

**Special JS feature/syntax:**

The `es6` benchmark uses a special syntax feature called "template literals" (`\r\n\r\nessix('kajak')`) and the spread operator (`[...arg]`). These features are only available in modern JavaScript engines that support ES6+ syntax. The `loop` benchmark, on the other hand, is written in standard JavaScript syntax without any special features.

**Other alternatives:**

If you wanted to create similar benchmarks using different approaches, here are a few ideas:

* **Regex-based palindrome check**: Use regular expressions to compare the original string with its reverse.
* **Array-based palindrome check**: Convert the string to an array, then use `indexOf()` and `length` properties to compare the first half of the array with the second half.
* **Native code-based palindrome check**: Write a small native module in C++ or Rust that performs the palindrome check, then call it from your JavaScript benchmark.

Keep in mind that these alternatives might have different performance characteristics and may not be as portable or readable as the original benchmarks.

Related benchmarks:

palindrom test (version: 0)

Comparing performance of: es6 vs loop

Created: 6 years ago by: Guest

Jump to the latest result

es6

loop

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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