Benchmark: test 123123 - MeasureThat.net

Tests:

for + push
var params = [ {doc: {id: 1, coordinate: "a"}}, {doc: {id: 2, coordinate: "b"}}, {doc: {id: 3, coordinate: "c"}}, {doc: {id: 4, coordinate: "d"}}, {doc: {id: 5, coordinate: "e"}}, ]; var results1 = []; var results2 = []; for (i = 0; i < params.length; i++) { var element = params[i]; results1.push(element.doc); results2.push({geometry: element.doc.coordinate}); }
for + spread operator
var params = [ {doc: {id: 1, coordinate: "a"}}, {doc: {id: 2, coordinate: "b"}}, {doc: {id: 3, coordinate: "c"}}, {doc: {id: 4, coordinate: "d"}}, {doc: {id: 5, coordinate: "e"}}, ]; var results1 = []; var results2 = []; for (i = 0; i < params.length; i++) { var element = params[i]; results1 = [...results1, element.doc]; results2 = [...results2, {geometry: element.doc.coordinate}]; }
map
var params = [ {doc: {id: 1, coordinate: "a"}}, {doc: {id: 2, coordinate: "b"}}, {doc: {id: 3, coordinate: "c"}}, {doc: {id: 4, coordinate: "d"}}, {doc: {id: 5, coordinate: "e"}}, ]; var results1 = params.map(element => element.doc); var results2 = params.map(element => {geometry: element.doc.coordinate});

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for + push
for + spread operator
map

Fastest: N/A

Slowest: N/A

Latest 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 break down the provided benchmark definitions and test cases.

**Overview**

The benchmark measurements are comparing three different approaches to iterating over an array of objects:

1. **For loop with push**: Using a traditional `for` loop with the `push()` method to add elements to two separate arrays.
2. **For loop with spread operator**: Using a traditional `for` loop with the spread operator (`...`) to create new arrays from the original array and its elements.
3. **Map function**: Using the `map()` function to create new arrays by applying a transformation function to each element of the original array.

**Options comparison**

The three approaches differ in their performance characteristics:

* **For loop with push**: This approach is generally slower than the other two, as it involves iterating over the array and adding elements to separate arrays using `push()`.
* **For loop with spread operator**: This approach is faster than the traditional `for` loop with `push()`, but slower than the `map()` function. The spread operator provides a more efficient way to create new arrays by copying the elements.
* **Map function**: The `map()` function is generally the fastest approach, as it allows the JavaScript engine to optimize the iteration and creation of new arrays in parallel.

**Pros and Cons**

Here are some pros and cons for each approach:

* **For loop with push**:
	+ Pros: Easy to understand and implement.
	+ Cons: Slower than other approaches due to the use of `push()` and separate array operations.
* **For loop with spread operator**:
	+ Pros: Faster than traditional `for` loops, but slower than `map()`.
	+ Cons: Requires understanding of the spread operator syntax.
* **Map function**:
	+ Pros: Fastest approach, allowing for optimization by the JavaScript engine.
	+ Cons: Requires understanding of the `map()` function and its transformation capabilities.

**Libraries and special features**

In this benchmark, there are no external libraries used, but it does rely on built-in JavaScript features like `map()`, `for` loops, and the spread operator (`...`). There is also no special syntax or features mentioned in the benchmark definition.

**Alternatives**

Other approaches that could be considered for comparison include:

* **Array.prototype.forEach()**: A more concise alternative to traditional `for` loops.
* **Arrow functions**: Could potentially be used instead of the `map()` function, but may not provide the same performance benefits due to the JavaScript engine's optimization capabilities.
* **Closures or functions with higher-order functions**: Could be used as alternatives to traditional `for` loops and `push()`, but would likely require additional setup and understanding.

Keep in mind that these alternative approaches may have different performance characteristics and requirements, making them less suitable for this specific benchmark.

Related benchmarks:

test 123123 (version: 0)

Comparing performance of: for + push vs for + spread operator vs map

Created: 4 years ago by: Guest

Jump to the latest result

for + push

for + spread operator

map

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):