Benchmark: Array#push vs Array#apply

Tests:

Array#push
let array1 = ['a', 'b', 'c']; let array2 = ['d', 'e', 'f']; array1.push(...array2);
Array#apply
let array1 = ['a', 'b', 'c']; let array2 = ['d', 'e', 'f']; Array.prototype.push.apply(array1, array2);
Array#push#apply
let array1 = ['a', 'b', 'c']; let array2 = ['d', 'e', 'f']; array1.push.apply(array1, array2);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array#push
Array#apply
Array#push#apply

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array#push	62099228.0 Ops/sec
Array#apply	12740614.0 Ops/sec
Array#push#apply	59554916.0 Ops/sec

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 and its test cases.

**Benchmark Definition**
The benchmark is comparing the performance of two approaches to append elements to an array: `Array#push` and `Array#apply`.

**Options Compared**

1. **Array#push**: This method appends one or more elements to the end of an array.
2. **Array#apply**: This method applies a specified function to all elements in an array, including the initial elements.

**Pros and Cons**

* **Array#push**:
	+ Pros: Simple, efficient, and widely supported.
	+ Cons: Can lead to shallow copying of large arrays, potentially causing performance issues.
* **Array#apply**:
	+ Pros: Can be more efficient for certain use cases (e.g., when dealing with large arrays).
	+ Cons: Less intuitive and less widely supported compared to `Array#push`.

**Library and Purpose**
None of the test cases explicitly use a library. However, `Array.prototype` is used implicitly by defining methods on it (`array1.push` and `array1.push.apply`).

**Special JS Feature or Syntax**
None mentioned.

Now, let's examine each individual test case:

1. **Array#push**:
The benchmark definition shows an array being created with initial elements and then pushing additional elements onto it using the spread operator (`...`). This is a simple and efficient way to append elements.
2. **Array#apply**:
This test case demonstrates applying the `push` method to another array as the first argument, followed by the original array as the second argument. This approach can be more efficient for certain use cases, but it's less intuitive than using `Array#push`.
3. **Array#push#apply**:
In this test case, both `Array#push` and `Array#apply` are used together. The purpose of this variation is unclear, as it seems to combine the benefits of both approaches.

**Other Alternatives**
For appending elements to an array, other methods exist:

* **concat()**: Concatenates one or more arrays.
* **Spread operator (Rest parameter)**: Used with `Array#push`, `Array#concat`, or other array methods to append new elements.

The choice of method depends on the specific use case and personal preference. In general, `Array#push` is a good starting point due to its simplicity and efficiency.

In conclusion, this benchmark provides insight into the performance differences between using `Array#push` and `Array#apply`. While both methods have their advantages and disadvantages, `Array#push` remains a popular choice for appending elements to arrays.

Related benchmarks:

Array#push vs Array#apply (version: 0)

Comparing performance of: Array#push vs Array#apply

Comparing performance of: Array#push vs Array#apply vs Array#push#apply

Created: 3 years ago by: Guest

Jump to the latest result

Array#push

Array#apply

Array#push#apply

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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