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Slice vs Pop vs newArrayPop
(version: 4)
Comparing performance of:
Slice vs Pop vs newArrayPop vs shift vs newArrayShift vs slice first vs push vs unshift vs spreadAdd vs spreadAddToBack
Created:
3 years ago
by:
Registered User
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Script Preparation code:
var arr = [1, 3, 5, 11, 13];
Tests:
Slice
arr.slice(0, -1);
Pop
arr.pop();
newArrayPop
[...arr].pop()
shift
arr.shift()
newArrayShift
[...arr].shift()
slice first
arr.slice(1)
push
arr.push(14)
unshift
arr.unshift(15)
spreadAdd
[14, ...arr]
spreadAddToBack
[...arr, 14]
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (10)
Previous results
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Test case name
Result
Slice
Pop
newArrayPop
shift
newArrayShift
slice first
push
unshift
spreadAdd
spreadAddToBack
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the benchmark and explain what's being tested, compared options, pros and cons of those approaches, and other considerations. **Benchmark Definition** The benchmark is defined by the JSON file provided, which includes: * `Name`: The name of the benchmark, "Slice vs Pop vs newArrayPop". * `Description`: No description is provided. * `Script Preparation Code`: A script that initializes an array `arr` with values `[1, 3, 5, 11, 13]`. * `Html Preparation Code`: No HTML code is required. **Individual Test Cases** The benchmark includes multiple test cases, each represented by a JSON object. Each test case defines a specific operation to be performed on the `arr` array: 1. `Slice` 2. `Pop` 3. `newArrayPop` 4. `Shift` 5. `newArrayShift` 6. `slice first` 7. `Push` 8. `Unshift` 9. `spreadAdd` (adding a value to the end of the array using the spread operator) 10. `spreadAddToBack` (adding a value to the beginning of the array using the spread operator) **Comparison of Options** Here's a brief explanation of each option and their pros and cons: * **Slice**: Removes the last element from the array. + Pros: Fast, efficient, and widely supported. + Cons: Can be less intuitive than other methods, as it modifies the original array. * **Pop**: Removes the last element from the array using `arr.pop()`. + Pros: Simple and straightforward, but can be slower than `slice` due to its method call overhead. + Cons: Requires an extra method call, which might incur a performance penalty. * **newArrayPop**: Creates a new array with all elements except the last one using `[...arr].pop()`. + Pros: Returns a new array without modifying the original, making it suitable for use in certain scenarios. + Cons: Creates a new object, which can be slower and more memory-intensive than `slice` or `pop`. * **Shift**: Removes the first element from the array using `arr.shift()` (not explicitly used here). + Pros: Similar to `pop`, but removes the first element instead of the last. + Cons: Not used in this benchmark, but can be slower due to its method call overhead. * **newArrayShift**: Creates a new array with all elements except the first one using `[...arr].shift()`. + Pros: Similar to `newArrayPop`, but removes the first element instead of the last. + Cons: Creates a new object, which can be slower and more memory-intensive than `slice` or `pop`. **Other Considerations** * **Performance**: The benchmark shows that `slice` is generally the fastest option, followed closely by `pop`. This might be due to its simplicity and the fact that it only requires accessing the last element of the array. * **Memory Usage**: `newArrayPop` and `newArrayShift` can be slower and more memory-intensive than `slice` and `pop`, as they create new arrays without modifying the original. The benchmark results suggest that `slice` is the best option for this particular use case, due to its efficiency and simplicity. However, the choice of method ultimately depends on the specific requirements and constraints of your application.
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Slice vs Pop
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