Benchmark: Arrow functions vs functions

Script Preparation code:

arrowFn = (a, b) => a + b;
function fn(a, b) {
    return a + b;
}

Tests:

arrowFn(1,2)
arrowFn(1,2)
fn(1,2)
fn(1,2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
arrowFn(1,2)
fn(1,2)

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 benchmarking test.

**What is being tested?**

The provided JSON represents a microbenchmark test that compares two types of functions in JavaScript: arrow functions and traditional function expressions (also known as "functions" in JavaScript).

**Options compared:**

Two options are being compared:

1. **Arrow Function**: An arrow function is a concise way to define small, single-purpose functions. It has a shorter syntax than a traditional function expression.
2. **Traditional Function Expression**: A traditional function expression is the classic way of defining a function in JavaScript.

**Pros and Cons:**

* **Arrow Function:**
	+ Pros:
		- Concise syntax
		- Less boilerplate code
		- Implies lexical scoping (i.e., the function's variables are scoped to the outer function)
	+ Cons:
		- Limited support for some JavaScript features, such as `this` and `arguments`
		- Not compatible with all older browsers or environments
* **Traditional Function Expression:**
	+ Pros:
		- Widely supported across browsers and environments
		- Compatible with most JavaScript features
		- Can be more readable and maintainable for complex functions
	+ Cons:
		- Longer syntax
		- More boilerplate code

**Other considerations:**

* **Performance:** The test measures the execution speed of each function type. The results suggest that arrow functions are slightly faster in this particular case.
* **Code Readability:** While traditional function expressions can be more readable for complex logic, arrow functions have become increasingly popular due to their concise syntax.

**Library and purpose:**

There is no library being used in this benchmark test.

**Special JS feature or syntax:**

None mentioned in the provided JSON. However, note that older browsers may not support arrow functions (e.g., Internet Explorer 11).

**Alternatives:**

Other alternatives for testing function performance in JavaScript might include:

* Using a library like Benchmark.js or Microbenchmark
* Testing different function optimization techniques, such as memoization or caching
* Comparing the performance of other programming paradigms, like lambda calculus

Keep in mind that this benchmark test is specific to comparing arrow functions and traditional function expressions. Other microbenchmarks might focus on testing different aspects of JavaScript performance.

Related benchmarks:

Arrow functions vs functions (version: 0)

Comparing performance of: arrowFn(1,2) vs fn(1,2)

Created: 3 years ago by: Guest

Jump to the latest result

arrowFn(1,2)

fn(1,2)

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):