Toggle navigation
MeasureThat
.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
comparing push vs spread one by one
(version: 0)
Comparing performance of:
Push vs Spread
Created:
6 years ago
by:
Guest
Go to the latest result
Tests:
Push
const elements = Array(1000).map(i => { id: i }); const array = []; elements.forEach((element) => array.push(element));
Spread
const elements = Array(1000).map(i => { id: i }); let array = []; elements.forEach((element) => array = [...array, element]);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Push
Spread
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 YaBrowser/24.7.0.0 Safari/537.36
Browser/OS:
Yandex Browser 24 on Linux
View result in a separate tab
Embed
Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=614560" width="100%" height="500px"></iframe>
Spread
389K/s
Push
386K/s
View exact numbers
Test name
Executions per second
✓
Spread
388,589 Ops/sec
Push
385,705 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation of the provided benchmark. **Overview** The benchmark is designed to compare two approaches for adding elements to an array: using the `push()` method versus using the spread operator (`...`). The test creates an array of 1000 elements with a unique ID, then iterates through each element and adds it to another empty array. The benchmark measures the execution time of both approaches. **Options compared** There are two options being compared: 1. **Push**: Using the `push()` method to add elements to an array. 2. **Spread**: Using the spread operator (`...`) to add elements to an array. **Pros and Cons** * **Push**: + Pros: The `push()` method is a built-in JavaScript method that is widely supported and has been around for a long time, making it a familiar choice for developers. + Cons: For large arrays, the `push()` method can be slower than other approaches because it involves appending elements to the end of the array one by one. This can lead to a higher number of cache misses and slower performance. * **Spread**: + Pros: The spread operator (`...`) is a newer feature that was introduced in ECMAScript 2015 (ES6). It can be faster than `push()` for large arrays because it avoids the need for appending elements one by one, reducing cache misses and improving performance. + Cons: However, the spread operator is not supported in older browsers or JavaScript environments. Additionally, some developers may find it less familiar or less efficient due to its novelty. **Library usage** The benchmark uses an array of 1000 elements with a unique ID, which suggests that no external libraries are being used for this specific test case. **Special JS features/syntax** There is no mention of any special JavaScript features or syntax in the provided benchmark code. The language and syntax used are standard JavaScript. **Alternatives** Other alternatives for adding elements to an array might include: * Using `concat()` method instead of `push()` * Using `set` object instead of arrays * Using a library like Lodash's `insertAt` function However, it's worth noting that the spread operator (`...`) has become increasingly popular and efficient in recent years, making it a strong contender for this type of benchmark. I hope this explanation helps software engineers understand what is being tested in this benchmark!
Related benchmarks
toFixed vs toPrecision vs Math.round() to 1 decimal place
toFixed vs Math.round() sd6f54sd6f54s6df54ds6f
Comments
Confirm delete:
Do you really want to delete benchmark?