Benchmark: Plus one - MeasureThat.net

Script Preparation code:

var start = 1;

Tests:

++
start++;
+= 1
start += 1;

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
++
+= 1

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark definition and test cases to explain what's being tested, compared, and their pros/cons.

**Benchmark Definition:**

The benchmark definition is a simple JavaScript expression that increments a variable `start` by 1 using two different methods:

* `++`: post-increment operator
* `+= 1`: prefix increment assignment

These expressions are used to test the performance difference between these two operators.

**Test Cases:**

There are two individual test cases:

1. `"++"`
	* Benchmark Definition: `start++;`
	* Test Name: `++` (post-increment operator)
2. `"+= 1"`
	* Benchmark Definition: `start += 1;`
	* Test Name: `+ = 1` (prefix increment assignment)

**Options Compared:**

The benchmark is comparing the performance of two different operators:

1. **Post-increment operator (`++`)**
	* Pros:
		+ Can be used in expressions and loops.
		+ Less prone to issues like "variable hoisting" or unexpected behavior in certain contexts (e.g., when used with `let` or `const` declarations).
	* Cons:
		+ Might incur additional overhead due to the need to evaluate the expression before incrementing.
2. **Prefix increment assignment (`+= 1`)**
	* Pros:
		+ Can be more efficient, as it only increments the variable and does not require evaluating an expression first.
	* Cons:
		+ May lead to issues in certain contexts, such as when used with `let` or `const` declarations.

**Library Used:**

In this benchmark, there is no specific library being tested. The test cases are using built-in JavaScript operators.

**Special JS Feature/Syntax:**

There is no special JavaScript feature or syntax being explicitly tested in this benchmark. However, it's worth noting that the use of `let` and `const` declarations might impact the behavior of these tests, as the post-increment operator can behave differently depending on whether the variable is declared with `let`, `const`, or `var`.

**Alternatives:**

Other alternatives to test these operators could include:

* Using a different incrementing method, such as `start = start + 1;` ( postfix increment)
* Testing with larger increments or more complex expressions
* Examining the performance of these operators in various contexts, such as:
	+ Loops
	+ Expressions
	+ Array operations

Keep in mind that these alternatives might not be directly relevant to the specific use case being tested and may require modifications to the benchmark definition.

Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.79 Safari/537.36

Browser/OS: Chrome 79 on Mac OS X 10.13.6

View result in a separate tab

Test name	Executions per second
++	4659070.5 Ops/sec
+= 1	4673520.0 Ops/sec

Related benchmarks:

Plus one (version: 0)

Comparing performance of: ++ vs += 1

Created: 4 years ago by: Guest

Jump to the latest result

++

+= 1

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):