Benchmark: addition operator bracket

Script Preparation code:

this.number = Math.random() * 1000 + 1;

Tests:

addition operator not bracket
let a = 0; for (let i=1; i<=100000; i++){ a += i + this.number -i }
addition operator
let a = 0; for (let i=1; i<=100000; i++){ a += (i + this.number -i) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
addition operator not bracket
addition operator

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

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

**Benchmark Definition**

The benchmark definition is a JSON object that describes the test case. It contains four main properties:

1. **Name**: The name of the benchmark, which in this case is "addition operator bracket".
2. **Description**: An optional description of the benchmark, which is null in this case.
3. **Script Preparation Code**: A JavaScript code snippet that prepares the test environment before running the benchmark. In this case, it generates a random number between 1 and 1000 using `Math.random() * 1000 + 1`.
4. **Html Preparation Code**: An optional HTML code snippet that prepares the test environment before running the benchmark. It's null in this case.

**Individual Test Cases**

There are two individual test cases defined:

1. **Test Case 1: "addition operator not bracket"**
	* The benchmark definition is a JavaScript loop that increments a variable `a` by the sum of three expressions: `i`, `this.number - i`, and `(i + this.number - i)`. Note that there are no brackets (`[]`) around the parentheses.
2. **Test Case 2: "addition operator"**
	* The benchmark definition is similar to Test Case 1, but with brackets around the parentheses: `a += (i + this.number - i)`.

**Options Compared**

The two test cases compare two different approaches to evaluating the expression:

1. **Without brackets**: The first test case (`addition operator not bracket`) uses a single set of parentheses to evaluate the expression inside the loop.
2. **With brackets**: The second test case (`addition operator`) uses square brackets `[]` around the parentheses to create an array literal.

**Pros and Cons**

Here are some pros and cons of each approach:

1. **Without brackets (Test Case 1)**
	* Pros:
		+ Faster execution, since the expression is evaluated only once.
		+ Less memory usage, as there's no temporary array created.
	* Cons:
		+ May lead to optimization issues or incorrect results if the expression has side effects.
2. **With brackets (Test Case 2)**
	* Pros:
		+ More predictable and safe, since the expression is evaluated in a separate scope.
		+ Easier to debug, as errors are reported separately from the loop iteration.
	* Cons:
		+ Slower execution, due to the creation of a temporary array.
		+ More memory usage, as a new array is created on each iteration.

**Library and Special JS Features**

There's no library used in these benchmark definitions. However, if there were any libraries involved, it would likely be something like:

* `Array.prototype.map()`: If the expression was being evaluated inside an array map function.
* `eval()`: If the expression was being passed to `eval()` for evaluation.

**Special JS Features**

There's no special JavaScript feature or syntax used in these benchmark definitions. However, if there were any special features like:

* `let` and `const` declarations
* `Arrow functions`
* `Async/await` syntax

they wouldn't be relevant to the comparison of the two test cases.

**Alternatives**

Other alternatives for measuring JavaScript performance could include:

* **Benchmarks using a Web Workers**: Using Web Workers to run the benchmark in parallel, which can help with concurrency and multithreading.
* **Profiling tools like Chrome DevTools or Node.js Inspector**: Using profiling tools to measure the execution time of specific functions or methods, rather than running benchmarks.
* **Benchmarking frameworks like Benchmark.js**: Using a dedicated benchmarking framework that provides more advanced features and controls for writing microbenchmarks.

Related benchmarks:

addition operator bracket (version: 0)

Comparing performance of: addition operator not bracket vs addition operator

Created: 4 years ago by: Guest

Jump to the latest result

addition operator not bracket

addition operator

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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