Benchmark: spread operator vs push test3

Tests:

spread operator true
const abc = true; const test = [ { domain: undefined, iconName: "a", }, { domain: "b", iconName: "b", }, { domain: "c", iconName: "c", }, { domain: "d", iconName: "d", }, { domain: "e", iconName: "e", }, ...(abc ? [{ domain: "f", iconName: "f", }] : []) ];
spread operator false
const abc = false; const test = [ { domain: undefined, iconName: "a", }, { domain: "b", iconName: "b", }, { domain: "c", iconName: "c", }, { domain: "d", iconName: "d", }, { domain: "e", iconName: "e", }, ...(abc ? [{ domain: "f", iconName: "f", }] : []) ];
Push true
const abc = true; const test = [ { domain: undefined, iconName: "a", }, { domain: "b", iconName: "b", }, { domain: "c", iconName: "c", }, { domain: "d", iconName: "d", }, { domain: "e", iconName: "e", }, ]; if (abc) { test.push({ domain: "f", iconName: "f", }); }
push false
const abc = false; const test = [ { domain: undefined, iconName: "a", }, { domain: "b", iconName: "b", }, { domain: "c", iconName: "c", }, { domain: "d", iconName: "d", }, { domain: "e", iconName: "e", }, ]; if (abc) { test.push({ domain: "f", iconName: "f", }); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator true
spread operator false
Push true
push false

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's dive into the world of JavaScript microbenchmarks.

**What is being tested?**

The provided benchmark measures the performance difference between three approaches:

1. The `...` spread operator (ES6 syntax)
2. The traditional `concat()` method
3. The `push()` method with a conditional statement

These three approaches are compared in various test cases, which we'll explore below.

**Approach 1: Spread Operator (`...`)**

The spread operator is used to create a new array by copying elements from an existing array. In the benchmark, the spread operator is used to add a new element to the `test` array conditionally.

Example:
```javascript
const test = [...abc ? [{ domain: 'f', iconName: 'f' }] : []];
```
The pros of using the spread operator are:

* Concise and expressive syntax
* Efficient, as it creates a new array without modifying the original one

However, there are some potential cons to consider:

* Can be slower than other methods for large arrays due to the overhead of creating a new array

**Approach 2: Concat() Method**

The `concat()` method is used to concatenate two or more arrays into a new array.

Example:
```javascript
const test = [...test, abc ? [{ domain: 'f', iconName: 'f' }] : []];
```
The pros of using the `concat()` method are:

* Well-established and widely supported syntax
* Can be faster than the spread operator for large arrays

However, there are some potential cons to consider:

* Creates a new array, which can lead to performance issues if not optimized properly
* May require additional checks to ensure correct handling of edge cases

**Approach 3: Push Method with Conditional Statement**

The push method is used to add elements to an existing array.

Example:
```javascript
if (abc) {
  test.push({ domain: 'f', iconName: 'f' });
}
```
The pros of using the `push()` method are:

* Efficient and lightweight syntax
* Easy to understand and implement

However, there are some potential cons to consider:

* May lead to slower performance compared to other methods due to the overhead of pushing elements onto an array
* Can result in unnecessary allocations if not optimized properly

**Other Considerations**

When choosing between these approaches, it's essential to consider the specific use case and requirements. For example:

* If you need to perform complex operations on the resulting array, the spread operator might be a better choice due to its concise and expressive syntax.
* If you're working with very large arrays or require maximum performance, the `concat()` method might be a better option.
* If readability is crucial, the push method with a conditional statement can be an excellent choice.

**Benchmark Results**

The provided benchmark results show that:

* The spread operator (`...`) performs relatively well across most test cases
* The `concat()` method performs slightly better in some scenarios (e.g., "Push true")
* The push method with a conditional statement is often the slowest option

Keep in mind that these results might vary depending on the specific use case, browser, and environment.

I hope this detailed explanation helps you understand the pros and cons of each approach.

Related benchmarks:

spread operator vs push test3 (version: 0)

Compare the new ES6 spread operator with the traditional concat() method and push

Comparing performance of: spread operator true vs spread operator false vs Push true vs push false

Created: 4 years ago by: Guest

Jump to the latest result

spread operator true

spread operator false

Push true

push false

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):