Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Push vs. Spread
(version: 0)
Comparing performance of:
Push vs Spread
Created:
7 years ago
by:
Guest
Jump to the latest result
Tests:
Push
var arr = []; for (var i = 0; i < 5; i++) arr.push(i);
Spread
var arr = []; arr.push(...[0,1,2,3,4]);
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:
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 JSON data and explain what's being tested in the "Push vs. Spread" benchmark. **Benchmark Definition** The benchmark is defined by two test cases: "Push" and "Spread". The goal of this benchmark is to compare the performance of pushing elements onto an array versus using the spread operator (`...`) to create a new array with the same elements. **Options Compared** There are two approaches being compared: 1. **`push()`**: This method appends one or more values to the end of an array. 2. **Spread Operator (`...`)**: This syntax creates a new array by duplicating the elements from an existing array or iterable. **Pros and Cons of Each Approach** * `push()`: Pros: + More readable code (less concise) + Can be more efficient for small arrays * Spread Operator (`...`): Pros: + More concise code + Creates a new array, avoiding potential issues with modifying the original array * Spread Operator (`...`): Cons: + May incur overhead due to creating a new array **Library and Purpose** There is no explicit library mentioned in the benchmark definition. However, it's likely that this benchmark is testing native JavaScript functionality. **Special JS Feature or Syntax** The spread operator (`...`) was introduced in ECMAScript 2015 (ES6) as part of the language specification. It allows you to create new arrays by duplicating elements from an existing array or iterable. **Benchmark Preparation Code and Test Cases** The test cases are simple JavaScript code snippets that prepare an empty array `arr` and perform the specific operation being tested: * "Push": `for (var i = 0; i < 5; i++) arr.push(i);` * "Spread": `arr.push(...[0,1,2,3,4]);` The test cases are identical except for the implementation details. This allows the benchmark to focus on measuring the execution time of the push operation versus using the spread operator. **Other Alternatives** If you're interested in testing alternative approaches, here are a few examples: * Using `concat()`: Instead of `push()` or the spread operator, this approach would concatenate arrays using the `concat()` method. * Using a loop with array indexing: This approach would use an explicit loop to iterate over the elements and append them to the array. * Using a library like Lodash: This approach would use the `lodash.push` function from the Lodash library, which might provide additional optimizations or features. Keep in mind that these alternatives may not be as straightforward or readable as using the `push()` method or the spread operator.
Related benchmarks:
spread operator vs push test - correct
Pushing items via Array.push vs. Spread Operator
spread operator vs push Brian2
JS array spread operator vs push
Array .push() vs spread operator
Comments
Confirm delete:
Do you really want to delete benchmark?