Benchmark: testing my code - MeasureThat.net

Script Preparation code:

var myList = [
  "aglio_e_olio",
  "breakfast_with_crushed_avocado_and_fried_eggs",
  "chicken_rice", "classic_smash_burger",
  "french_omelette",
  "french_toast",
  "philly_cheesesteak",
  "shrimp_fried_rice",
  "spaghetti_in_tomato_sauce"
];

Tests:

while and replace
for (let i of myList) { let temp = i; while (temp.indexOf("_") != -1) { temp = temp.replace("_", " "); } }
split and join
for (let i of myList) { let temp = i.split("_").join(" ").toUpperCase(); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
while and replace
split and join

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36

Browser/OS: Chrome 92 on Windows

View result in a separate tab

Test name	Executions per second
while and replace	277730.9 Ops/sec
split and join	429837.5 Ops/sec

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

LLMs can make mistakes. Check important info.

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

**Benchmarking Purpose**

The provided JSON represents a benchmark definition, which is used to test specific code snippets in JavaScript. In this case, we have two individual test cases: "while and replace" and "split and join".

**Tested Options**

These two test cases compare different approaches for handling the underscore character (`_`) within a string:

1. **While loop with replacement**: This approach uses a while loop to continuously replace underscores with spaces until no more underscores are found in the string.
2. **String splitting and joining**: This approach splits the input string into an array of words, joins them back together without any separators, and then converts the resulting string to uppercase.

**Pros and Cons**

* **While loop with replacement**:
	+ Pros: Can handle strings with varying numbers of consecutive underscores.
	+ Cons: May lead to unnecessary iterations and slower performance for short input strings.
* **String splitting and joining**:
	+ Pros: Fast and efficient, as it leverages built-in array operations.
	+ Cons: May not be suitable for strings with multiple consecutive underscores (e.g., "hello_world_hello").

**Library Usage**

There is no explicit library mentioned in the provided JSON. However, some libraries might be used implicitly due to browser-specific features or polyfills.

**Special JS Features**

None are explicitly mentioned in the provided test cases. No special JavaScript features or syntax are being tested in these examples.

**Benchmark Results**

The latest benchmark results show that:

* The "split and join" approach is significantly faster, with an executions per second (FPS) of 429837.5 for Chrome 92 on a Windows Desktop.
* The "while and replace" approach has a much lower FPS of 277730.9375 under the same conditions.

**Other Alternatives**

Other approaches to handle underscores in strings might include:

1. **Regular expressions**: Using `String.replace()` with a regular expression that matches consecutive underscores (`/_+/g`) could be another viable option.
2. **String method**: Some browsers have built-in string methods like `replaceAll()` or `replaceAll()` (synchronous version of `replace()`) that can handle multiple occurrences of the underscore character.

Keep in mind that these alternatives may not affect performance as much as the two test cases, which are optimized for their respective approaches.

Related benchmarks:

testing my code (version: 0)

just a test

Comparing performance of: while and replace vs split and join

Created: 3 years ago by: Guest

Jump to the latest result

while and replace

split and join

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):