Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Push & Shift vs Spread & Pop (2)
(version: 0)
Compare usage of a sorted todo list whether its better to have the next element at the end (pop) or at the beginning (shift) of the array
Comparing performance of:
Push & Shift vs Spread & Pop
Created:
3 years ago
by:
Guest
Jump to the latest result
Tests:
Push & Shift
var params = [ 8, 15, 12 ]; var todo = [ 2, 3 ]; todo.push(...params); var next = todo.shift();
Spread & Pop
var params = [ 8, 15, 12 ]; var todo = [ 2, 3 ]; todo = [ ...params, ...todo]; var next = todo.pop();
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Push & Shift
Spread & Pop
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):
**Overview** The provided benchmark measures the performance difference between two approaches to manipulate an array in JavaScript: using `push()` with the spread operator (`...`) versus using `shift()`. The test uses a simple todo list scenario where elements are added and then removed. **Benchmark Definition** The benchmark definition is represented as JSON, which includes: 1. **Name**: A unique name for the benchmark. 2. **Description**: A brief explanation of the benchmark's purpose. 3. **Script Preparation Code**: Not applicable in this case. 4. **Html Preparation Code**: Not applicable in this case. **Individual Test Cases** The benchmark consists of two test cases, each with its own `Benchmark Definition`: 1. **Push & Shift**: The first test case uses the `push()` method to add elements to the array and then removes the last element using `shift()`. 2. **Spread & Pop**: The second test case uses the spread operator (`...`) to merge two arrays and then removes the last element using `pop()`. **Library Used** In both test cases, no external libraries are used beyond the standard JavaScript features. **Special JS Features/Syntax** * The use of the spread operator (`...`) is a relatively modern feature in JavaScript (introduced in ECMAScript 2015). It allows for creating new arrays from existing ones by spreading elements. * `shift()` and `pop()` are built-in array methods that remove and return the first or last element of an array, respectively. **Options Compared** The two approaches being compared are: 1. **Push & Shift**: Uses `push()` to add elements to the end of the array and then uses `shift()` to remove the last added element. 2. **Spread & Pop**: Uses the spread operator (`...`) to merge two arrays and then uses `pop()` to remove the last element. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Push & Shift**: + Pros: Simple, straightforward implementation. + Cons: May lead to poor performance if elements are frequently added and removed from the end of the array. * **Spread & Pop**: + Pros: Can be more efficient than `push()` followed by `shift()`, especially when dealing with large arrays or frequent element removals. + Cons: Requires use of the spread operator, which can introduce overhead due to its dynamic nature. **Other Considerations** When choosing between these approaches, consider the following factors: * Frequency and type of operations (addition vs. removal) on the array. * Array size and complexity. * Performance requirements and potential bottlenecks in your application. **Alternative Approaches** If you need to optimize an array manipulation scenario, consider exploring other methods, such as: 1. **Using `unshift()` instead of `push()`**: Can be faster for adding elements to the beginning of the array. 2. **Using a custom data structure**: Depending on your specific requirements, creating a custom data structure (e.g., linked list or tree) might offer better performance. Keep in mind that these alternatives may come with additional complexity and trade-offs.
Related benchmarks:
Pushing items via Array.push vs. Spread Operator
React State Push vs Spread Operator lsit
slice sort vs spread sort vs sort
Push Shift vs Pop Spread.
Empty array: Splice vs Shift vs Pop
Comments
Confirm delete:
Do you really want to delete benchmark?