Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
javascript LARGE concat vs spread operator vs push v4
(version: 0)
Comparing performance of:
concat vs spread operator vs push vs push apply vs push spread
Created:
3 years ago
by:
Guest
Jump to the latest result
Tests:
concat
var existed = [ "hello", true, 7 ]; var params = new Array(100000); var other = existed.concat(params);
spread operator
var existed = [ "hello", true, 7 ]; var params = new Array(100000); var other = [ ...existed, ...params ];
push
var existed = [ "hello", true, 7 ]; var params = new Array(100000); params.forEach(function(ele) { existed.push(ele); });
push apply
var existed = [ "hello", true, 7 ]; var params = new Array(100000); var other = existed.push.apply(existed,params);
push spread
var existed = [ "hello", true, 7 ]; var params = new Array(100000); var other = existed.push(...params);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (5)
Previous results
Fork
Test case name
Result
concat
spread operator
push
push apply
push spread
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and its various test cases. **Benchmark Overview** The benchmark, named "javascript LARGE concat vs spread operator vs push v4", tests the performance of three different methods to concatenate an array in JavaScript: `concat`, `spread operator` (also known as `Rest Parameter`), `push`, and `push apply`. The goal is to determine which method is the most efficient. **Test Cases** 1. **Concat**: This test case uses the traditional `concat` method, where an existing array is merged with a new array using the `+` operator. 2. **Spread Operator**: This test case utilizes the spread operator (`...`) to merge two arrays in a single expression. 3. **Push**: This test case employs the `push` method to add elements to an existing array and then pushes additional elements from another array. 4. **Push Apply**: This test case uses the `apply` method with the `push` function to concatenate two arrays. 5. **Push Spread**: This test case combines the `push` method with the spread operator to concatenate two arrays. **Libraries and Features** In this benchmark, there are no explicit libraries mentioned. However, it's worth noting that some of these methods may have slightly different behavior depending on the JavaScript engine or browser being used. **Options Compared** The benchmark compares the performance of five different approaches: * `concat`: traditional concatenation using the `+` operator * Spread Operator (`...`): a concise way to merge arrays in a single expression * `push`: adding elements to an existing array and then pushing additional elements from another array * `push apply`: using `apply` with the `push` function to concatenate two arrays * `push spread`: combining `push` with the spread operator **Pros and Cons** Here's a brief summary of each method's pros and cons: * **Concat**: Can be slower due to the overhead of creating an intermediate array. However, it's still widely supported and easy to understand. * **Spread Operator**: Very concise and expressive, but some older browsers or engines may not support it. It can also lead to more memory allocation if used excessively. * `push`: Can be faster than `concat` because it modifies the existing array in place, but it requires a separate operation to push elements from another array. * `push apply`: Can be slower due to the overhead of the `apply` method and function call. However, it provides a more efficient way to concatenate arrays compared to traditional `concat`. * `push spread`: Combines the benefits of both `push` and the spread operator, providing a concise way to concatenate arrays. **Other Considerations** When choosing between these methods, consider factors like: * Browser support: Spread Operator and `push apply` might not be supported in older browsers or engines. * Performance: If you need optimal performance, `push apply` is often the fastest option due to its concise and efficient implementation. * Code readability: The spread operator provides a very concise and expressive way to merge arrays, making it easier to read and understand code. **Alternatives** If you're looking for alternative approaches, consider: * Using `Array.prototype.concat()` with `null` as the first argument to avoid creating an intermediate array. * Utilizing modern array methods like `flat()` or `unshift()`. * Employing a custom implementation using `forEach()` and `push()`. Keep in mind that each approach has its trade-offs, and the best choice depends on your specific use case and requirements.
Related benchmarks:
Array concat vs spread operator vs push v2
spread operator vs push Brian
spread operator vs push Brian2
Array concat vs spread operator vs push larger list
Array concat vs spread operator vs push large
Comments
Confirm delete:
Do you really want to delete benchmark?