Benchmark: Array: spread operator vs push #2

Tests:

spread operator
var arr = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100]; arr = [...arr, 101];
push function
var arr = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100]; arr.push(101);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread operator
push function

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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**Benchmark Definition**

The benchmark is defined by a JSON object that contains information about the test cases and their corresponding JavaScript code. The benchmark compares two approaches: using the spread operator (`...`) to add elements to an array, and using the `push()` method to add elements to an array.

**Options Compared**

The options being compared are:

1. **Spread Operator (`...`)**: This approach uses the spread operator to create a new array by copying the existing elements of the original array and adding a new element to it.
2. **Push Function**: This approach uses the `push()` method to add an element to the end of an array.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Spread Operator (`...`)**:
	+ Pros: More concise and expressive code, can be used with other arrays and iterables.
	+ Cons: Can be slower than using `push()` due to the overhead of creating a new array.
* **Push Function**:
	+ Pros: Faster execution time because it modifies the existing array without creating a new one.
	+ Cons: Less concise code, can lead to confusing variable names.

**Library and Purpose**

There is no explicit library mentioned in the benchmark definition or test cases. However, the use of modern JavaScript features such as `...` (spread operator) suggests that the benchmark is running on a relatively modern JavaScript engine.

**Special JS Feature or Syntax**

The benchmark uses the spread operator (`...`) which is a relatively recent feature introduced in ECMAScript 2015 (ES6). This means that older JavaScript engines may not support this syntax, which could affect the execution times of the test cases.

**Other Alternatives**

If you're interested in exploring alternative approaches, here are some other ways to add an element to an array:

* **Array.prototype.concat()**: Similar to using `push()`, but creates a new array instead of modifying the existing one.
* **Array.prototype.unshift()**: Adds an element to the beginning of the array instead of the end.

Keep in mind that these alternatives may have different performance characteristics and code readability implications compared to the spread operator and push function approaches.

Related benchmarks:

Array: spread operator vs push #2 (version: 0)

Comparing performance of: spread operator vs push function

Created: 7 years ago by: Guest

Jump to the latest result

spread operator

push function

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):