Benchmark: For vs indexof - MeasureThat.net

Tests:

for loop
var splitParameters = "=&=&=&to=&cc=&bcc=&subjectbox=&composeid=1476889432826&from=robebsta%40gmail.com&subject=&draft=157dd78731699d77&bwd=&rm=&cans=&ctok=&ac=&adc=&ishtml=1&nowrap=0&body=%3Cdiv%20dir%3D%22ltr%22%3E%3Cdiv%20class%3D%22gmail_default%22%20style%3D%22font-family%3Aarial%2Chelvetica%2Csans-serif%22%3Easdasdasdffbbfffsdfdsfggjjjjtrset%3C%2Fdiv%3E%3C%2Fdiv%3E&pte=&pti=&bpfs=&uet=&pbgt=&pbgas=&pbgir=&msg_encrypt=0&signature=0&"; splitParameters = splitParameters.split("&"); for (var i = 0; i < splitParameters.length; i++) { var bodyContentIteration = splitParameters[i]; if (bodyContentIteration.indexOf("draft=") > -1) { return bodyContentIteration.replace("draft=",""); } }
indexof ubstring test
var bodyContent = "=&=&=&to=&cc=&bcc=&subjectbox=&composeid=1476889432826&from=robebsta%40gmail.com&subject=&draft=157dd78731699d77&bwd=&rm=&cans=&ctok=&ac=&adc=&ishtml=1&nowrap=0&body=%3Cdiv%20dir%3D%22ltr%22%3E%3Cdiv%20class%3D%22gmail_default%22%20style%3D%22font-family%3Aarial%2Chelvetica%2Csans-serif%22%3Easdasdasdffbbfffsdfdsfggjjjjtrset%3C%2Fdiv%3E%3C%2Fdiv%3E&pte=&pti=&bpfs=&uet=&pbgt=&pbgas=&pbgir=&msg_encrypt=0&signature=0&"; startIndex = bodyContent.indexOf("&draft="); if (startIndex > -1) { var endIndex = bodyContent.indexOf("&", startIndex + 1); return bodyContent.substring(startIndex + 7, endIndex); }
Regex
var regex = /&draft=(.*?)&/g; var regexMatch = regex.exec("=&=&=&to=&cc=&bcc=&subjectbox=&composeid=1476889432826&from=robebsta%40gmail.com&subject=&draft=157dd78731699d77&bwd=&rm=&cans=&ctok=&ac=&adc=&ishtml=1&nowrap=0&body=%3Cdiv%20dir%3D%22ltr%22%3E%3Cdiv%20class%3D%22gmail_default%22%20style%3D%22font-family%3Aarial%2Chelvetica%2Csans-serif%22%3Easdasdasdffbbfffsdfdsfggjjjjtrset%3C%2Fdiv%3E%3C%2Fdiv%3E&pte=&pti=&bpfs=&uet=&pbgt=&pbgas=&pbgir=&msg_encrypt=0&signature=0&"); if (regexMatch != null && regexMatch.length > 1) { var messageId = regexMatch[1]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for loop
indexof ubstring test
Regex

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the explanation of the benchmark.

**Benchmark Definition**

The benchmark is defined by a JSON object that specifies three main components:

1. `Script Preparation Code`: This section contains code that prepares the test script for execution. In this case, it's empty.
2. `Html Preparation Code`: This section contains HTML code that sets up the environment for the test. Again, it's empty in this example.
3. `Benchmark Definition`: This is the actual benchmark definition, which specifies the logic to be tested.

In this case, there is only one benchmark definition provided:

"var bodyContent = \"=&=&=&to=&cc=&bcc=&subjectbox=&composeid=1476889432826&from=robebsta%40gmail.com&subject=&draft=157dd78731699d77&bwd=&rm=&cans=&ctok=&ac=&adc=&ishtml=1&nowrap=0&body=%3Cdiv%20dir%3D%22ltr%22%3E%3Cdiv%20class%3D%22gmail_default%22%20style%3D%22font-family%3Aarial%2Chelvetica%2Csans-serif%22%3Easdasdasdffbbfffsdfdsfggjjjjtrset%3C%2Fdiv%3E%3C%2Fdiv%3E&pte=&pti=&bpfs=&uet=&pbgt=&pbgas=&pbgir=&msg_encrypt=0&signature=0&\";\r\n startIndex = bodyContent.indexOf(\"&draft=\");\r\n        if (startIndex > -1) {\r\n            var endIndex = bodyContent.indexOf(\"&\", startIndex + 1);\r\n            return bodyContent.substring(startIndex + 7, endIndex);\r\n        }"

This benchmark definition contains a simple string manipulation test that extracts the value of the `draft` parameter from a URL.

**Options Compared**

There are three options being compared in this benchmark:

1. **For loop**: The first option uses a traditional `for` loop to iterate over an array.
2. **IndexOf ubstring test**: The second option uses the `indexOf()` method with a regular expression to find the index of the `draft` parameter in the URL string.
3. **Regex**: The third option uses a regular expression (`/&draft=(.*?)&/g`) to extract the value of the `draft` parameter from the URL string.

**Pros and Cons**

Here are some pros and cons of each approach:

* **For loop**: Pros: straightforward, easy to understand; Cons: may be slower due to the overhead of loop control.
* **IndexOf ubstring test**: Pros: simple, efficient; Cons: assumes the `draft` parameter is always at a specific index in the URL string.
* **Regex**: Pros: flexible, powerful; Cons: can be slow and resource-intensive if used incorrectly.

**Other Considerations**

* The benchmark uses a Windows-specific URL format, which may not be representative of other platforms or browsers.
* The `draft` parameter is hardcoded in the URL string, which may not be realistic in all scenarios.
* The regular expression used to extract the `draft` parameter is simple and efficient, but may not cover all possible variations.

**Latest Benchmark Result**

The latest benchmark result shows that:

* **Regex**: 980088 executions per second
* **IndexOf ubstring test**: 3700696 executions per second
* **For loop**: 4299475 executions per second

These results suggest that the `for` loop is the fastest option, followed closely by the `IndexOf ubstring test`. The `Regex` option is slower due to its resource-intensive nature.

Latest run results:

Run details: (Test run date: 8 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0

Browser/OS: Firefox 51 on Windows

View result in a separate tab

Test name	Executions per second
for loop	980088.7 Ops/sec
indexof ubstring test	3700696.0 Ops/sec
Regex	4299475.0 Ops/sec

Related benchmarks:

For vs indexof (version: 5)

Comparing performance of: for loop vs indexof ubstring test vs Regex

Created: 8 years ago by: Registered User

Jump to the latest result

for loop

indexof ubstring test

Regex

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):