Benchmark: If + Push vs Ternary array destructuring;

Tests:

Ternary array destructuring
const valid = true; const invalid = false; const obj = { valid: true, invalid: false, deep: { valid: true, invalid: false, } }; const arr = [ ...(valid ? [{test: 'content1'}] : []), ...(invalid ? [{test: 'content2'}] : []), ...(obj.valid ? [{test: 'content3'}] : []), ...(obj.deep?.valid ? [{test: 'content4'}] : []), ...(obj.invalid ? [{test: 'content5'}] : []), ...(obj.deep?.invalid ? [{test: 'content6'}] : []), ...(obj.nondef?.valid ? [{test: 'content7'}] : []), ...(obj.nondef?.invalid ? [{test: 'content8'}] : []), ];
if + push
const valid = true; const invalid = false; const obj = { valid: true, invalid: false, deep: { valid: true, invalid: false, } }; const arr = []; if(valid) { arr.push({test: 'content1'}); } if(invalid) { arr.push({test: 'content2'}); } if(obj.valid) { arr.push({test: 'content3'}); } if (obj.deep?.valid) { arr.push({test: 'content4'}); } if (obj.invalid) { arr.push({test: 'content5'}); } if (obj.deep?.invalid) { arr.push({test: 'content6'}); } if (obj.nondef?.valid) { arr.push({test: 'content7'}); } if (obj.nondef?.invalid) { arr.push({test: 'content8'}); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Ternary array destructuring
if + push

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36

Browser/OS: Chrome 96 on Windows

View result in a separate tab

Test name	Executions per second
Ternary array destructuring	22005962.0 Ops/sec
if + push	53596248.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'll break down the provided benchmark and explain what's being tested, the options compared, their pros and cons, and other considerations.

**Benchmark Overview**

The provided benchmark compares two approaches to push elements onto an array: Ternary Array Destructuring (TAD) and the traditional `if + push` approach. The test case involves creating an object with nested properties and using Ternary Array Destructuring or the `if + push` approach to populate an array with elements.

**Benchmark Definition**

The benchmark definition is a JSON object that provides details about the test case:
```json
{
    "Name": "If + Push vs Ternary array destructuring;",
    "Description": null,
    "Script Preparation Code": null,
    "Html Preparation Code": null
}
```
This definition specifies the name and description of the benchmark, but it's empty in this case.

**Individual Test Cases**

There are two test cases defined:

1. **Ternary Array Destructuring**
```json
{
    "Benchmark Definition": "...",
    "Test Name": "Ternary array destructuring"
}
```
This test case uses Ternary Array Destructuring to create an array with elements.

2. **if + push**
```json
{
    "Benchmark Definition": "...",
    "Test Name": "if + push"
}
```
This test case uses the traditional `if + push` approach to create an array with elements.

**Options Compared**

The two options being compared are:

1. **Ternary Array Destructuring (TAD)**: a syntax feature introduced in ECMAScript 2020, which allows you to destructure arrays or objects using ternary expressions.
2. **if + push**: the traditional approach of using `if` statements to conditionally add elements to an array.

**Pros and Cons**

Here are some pros and cons for each approach:

**Ternary Array Destructuring (TAD)**

Pros:

* Concise and expressive syntax
* Can improve code readability

Cons:

* May be less performant due to the overhead of parsing ternary expressions
* Not yet widely supported by older browsers or JavaScript engines

**if + push**

Pros:

* Well-established and widely supported
* More predictable performance

Cons:

* Less concise and more verbose syntax
* Can lead to code duplication if the conditions are complex

**Other Considerations**

* The benchmark measures the number of executions per second, which indicates the performance difference between the two approaches.
* The `?.` operator used in TAD is called the optional chaining operator and allows you to access nested properties without throwing errors.
* The `nondef` property is not a standard JavaScript feature; it's likely a custom property added by the benchmark author to test edge cases.

**Alternatives**

If you're interested in exploring other alternatives, here are a few options:

* **Array.prototype.push.call()**: an alternative way to push elements onto an array using `push.call()`, which can be more efficient for large arrays.
* **Object.assign()**: another approach to populate an array with objects, but it may not be as concise or expressive as TAD.

Keep in mind that the performance difference between these approaches is likely to be small and may vary depending on the specific use case and JavaScript engine.

Related benchmarks:

If + Push vs Ternary array destructuring; (version: 0)

Comparing performance of: Ternary array destructuring vs if + push

Created: 3 years ago by: Guest

Jump to the latest result

Ternary array destructuring

if + push

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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