Benchmark: || vs some - MeasureThat.net

Script Preparation code:

var errorCode = 409

Tests:

||
if (errorCode === 400 || errorCode === 404 || errorCode === 409) { console.log('caught it') }
some
if ([400, 404, 409].some(code => code === errorCode)) { console.log('caught it') }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
\|\|
some

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 dive into the world of JavaScript microbenchmarks and explore what's being tested in this specific benchmark.

**What is being tested?**

The provided JSON represents two test cases that compare the performance of two different conditional statements:

1. `||` (the OR operator with short-circuiting)
2. `.some()` (a method on arrays to check if any element matches a condition)

**Options compared:**

Both test cases use JavaScript as the target language, but they differ in how they express the same logical condition.

* The first test case uses the `||` operator, which has short-circuiting behavior:
```javascript
if (errorCode === 400 || errorCode === 404 || errorCode === 409) {
  console.log('caught it')
}
```
The `||` operator will evaluate each expression in order and stop at the first one that returns a truthy value. This means that if `errorCode` is not equal to any of the three values, the condition will be false.

* The second test case uses the `.some()` method:
```javascript
if ([400, 404, 409].some(code => code === errorCode)) {
  console.log('caught it')
}
```
The `.some()` method returns a boolean value indicating whether any element in the array passes the provided test. In this case, the test is to check if `errorCode` matches any of the three values.

**Pros and Cons:**

* **|| operator:**
	+ Pros:
		- Often faster due to short-circuiting behavior.
		- Typically easier to read and understand for simple conditions.
	+ Cons:
		- Can lead to unexpected behavior if not used carefully (e.g., relying on the order of operations).
		- May not be as readable or maintainable in complex conditions.
* **.some() method:**
	+ Pros:
		- More explicit and readable, especially for more complex conditions.
		- Can be more reliable than short-circuiting behavior.
	+ Cons:
		- Generally slower due to the overhead of iterating over the array.
		- May require more code and attention to detail.

**Library usage:**

Neither test case explicitly uses any external libraries, so no additional dependencies are involved in this benchmark.

**Special JS features/syntax:**

There's no special JavaScript feature or syntax used in these test cases. They're straightforward and focused on comparing the performance of two different conditional statements.

**Alternatives:**

Other alternatives for implementing similar conditions could include:

* Using a `for` loop to iterate over an array and check each element:
```javascript
if (400 === errorCode || 404 === errorCode || 409 === errorCode) {
  console.log('caught it')
}
```
* Utilizing a more functional programming approach with arrow functions and the `every()` method:
```javascript
if ([400, 404, 409].every(code => code === errorCode)) {
  console.log('caught it')
}
```
These alternatives would likely have different performance characteristics compared to the original test cases.

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Safari/537.36

Browser/OS: Chrome 117 on Windows

View result in a separate tab

Test name	Executions per second
\|\|	200226.4 Ops/sec
some	210692.6 Ops/sec

Related benchmarks:

|| vs some (version: 0)

Comparing performance of: || vs some

Created: one year ago by: Guest

Jump to the latest result

||

some

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):