Benchmark: BranchVsReturnTrue

Script Preparation code:

var test = 'test'

Tests:

if/if
return true;
if/else if
if (test === 'test1') { return true; } else if (test === 'test2') { return true; } else if (test === 'test3') { return true; } else if (test === 'test4') { return true; } else if (test === 'test5') { return true; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
if/if
if/else if

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark definition and test cases to understand what is being tested.

**Benchmark Definition**

The benchmark definition describes two different approaches:

1. **Branch Vs Return True**: This benchmark compares the speed difference between using multiple `if` statements and an open-ended `if/else if`.
2. The second part of the benchmark definition mentions a script preparation code (`var test = 'test'`) and HTML preparation code, but these are not relevant to the actual testing.

**Individual Test Cases**

There are two individual test cases:

1. **"if/if"`**
	* This test case has no additional information other than its name.
2. **"if/else if"`**
	* This test case describes a series of nested `if` and `else if` statements that evaluate different conditions using the same variable (`test`).
3. **"return true;"**
	* This test case simply outputs "return true;" without any conditional logic.

**Library Usage**

In the first test case, `"if/if"`, there is no explicit library usage mentioned in the benchmark definition or individual test cases.

However, upon closer inspection of the `if/else if` test case, it appears to use a JavaScript feature called **switch expressions**, which was introduced in ECMAScript 2020. Switch expressions allow you to write more concise and expressive code using the syntax `x => { switch (x) { default: return; } };`. In this specific test case, it seems that the variable `test` is used as a key in an object literal, triggering a series of nested `if/else if` statements.

**Special JS Feature**

The use of **switch expressions** in the `"if/else if"` test case makes this benchmark special. Switch expressions are not widely supported yet and might require specific implementations or flags to be enabled in JavaScript engines or browsers.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are some examples:

* Using a **loop** instead of multiple `if` statements: This could potentially reduce the overhead of function calls and branching.
* Employing **early returns**: Instead of using nested `if/else if` statements, you could use early returns to simplify the code and improve readability.
* Utilizing **JS functions with closure**: You could define a function that takes the `test` variable as an argument and uses it to determine which branch to execute.

For example, here's how the `"if/if"` test case could be rewritten using a loop:

```javascript
var test = 'test';
for (let i = 0; i < 5; i++) {
    if (i === 1) {
        return true;
    }
}
```

Keep in mind that the choice of approach depends on your specific use case, performance requirements, and coding style preferences.

Latest run results:

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

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/118.0

Browser/OS: Firefox 118 on Linux

View result in a separate tab

Test name	Executions per second
if/if	2088939520.0 Ops/sec
if/else if	164456464.0 Ops/sec

Related benchmarks:

BranchVsReturnTrue (version: 0)

Benchmark of the speed difference between using multiple IF statements and an open-ended IF/ELSE IF.

Comparing performance of: if/if vs if/else if

Created: one year ago by: Guest

Jump to the latest result

if/if

if/else if

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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