Benchmark: comparison between ['a'] push, 'a' push

Tests:

push array item
class User { name; id; age; attributes; constructor(name, id, age, attributes) { this.name = name; this.id = id; this.age = age; this.attrubitues = attributes; } getId(){ return this.id; } } const user1 = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); const user2 = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); const user3 = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); var existed = [ user1, user3, user3 ]; const newUser = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); var newResults = [ newUser ]; const other = existed.push(...newResults);
push item
class User { name; id; age; attributes; constructor(name, id, age, attributes) { this.name = name; this.id = id; this.age = age; this.attrubitues = attributes; } getId(){ return this.id; } } const user1 = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); const user2 = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); const user3 = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); var existed = [ user1, user3, user3 ]; const newUser = new User('abc', '1234567789', 30, {uuid: 'dlajfo3i458dfug9a87u9d8ug'}); var newResults = [ newUser ]; const other = existed.push(newUser);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
push array item
push item

Fastest: N/A

Slowest: N/A

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

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Let's break down what is being tested in the provided JSON benchmark.

The benchmark is comparing two approaches to pushing an item onto an array:

1. **Existed.push(...newResults)**: This approach uses the spread operator (`...`) to copy the elements of `newResults` into the existing array `existed`. The `push()` method then adds a new element to the end of the array.
2. **existed.push(newUser)**: This approach directly pushes a new element onto the existing array `existed`, without creating a new array.

Now, let's discuss the pros and cons of each approach:

**Existed.push(...newResults)**

Pros:

* More efficient in terms of memory allocation, as it avoids creating a new array.
* Can be more cache-friendly, as the elements are contiguous in memory.

Cons:

* May incur additional overhead due to the spread operator and the need to create a temporary array (in modern browsers).
* Can lead to slower performance if `existed` is large, since the browser needs to allocate memory for the new array.

**Existed.push(newUser)**

Pros:

* Typically faster and more efficient, as it only pushes a single element onto the existing array.
* Reduces memory allocation overhead, as no new array needs to be created.

Cons:

* May lead to slower performance if `existed` is large, since each push operation can lead to additional memory allocations and copies.
* Can result in less cache-friendly code, as each push operation adds a new element at the end of the array.

Other considerations:

* The use of the spread operator (`...`) introduces some overhead, especially for smaller arrays. However, this is generally negligible for most practical use cases.
* In modern browsers, the `push()` method has become very fast and efficient, so the difference between these two approaches may be small in practice.
* If `existed` is a large array, using `push(newUser)` repeatedly can lead to slower performance due to memory allocation overhead.

As for special JavaScript features or syntax, this benchmark does not appear to utilize any advanced features like async/await, Promises, or modern web APIs.

If you're interested in exploring alternative approaches, some other options might include:

* Using a different array creation method, such as `Array.from()` or `Array.prototype.slice()`.
* Optimizing the code for specific use cases, such as pushing a large number of elements onto an array.
* Using native WebAssembly (WASM) or web workers to offload computationally expensive operations.

Keep in mind that these alternatives may not necessarily offer significant performance improvements and should be carefully considered before switching.

Related benchmarks:

comparison between ['a'] push, 'a' push (version: 0)

Comparing performance of: push array item vs push item

Created: 3 years ago by: Guest

Jump to the latest result

push array item

push item

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):