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splice vs set javascript
(version: 0)
Comparing performance of:
slice vs set
Created:
2 years ago
by:
Guest
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Script Preparation code:
var array = new Array(100).map((a, i) => i) var set = new Set(array)
Tests:
slice
array = array.splice(1, 0)
set
set.delete(1)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
slice
set
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **What is being tested?** The provided JSON represents two test cases: `splice vs set javascript`. The goal of this benchmark is to compare the performance of JavaScript arrays using `splice` versus sets (an implementation of a set data structure). **Options compared:** 1. **Splice**: This method modifies the original array by removing elements from a specified range and appending new elements. 2. **Set**: A set data structure, which is an unordered collection of unique values. **Pros and Cons of each approach:** **Splice:** Pros: * Modifies the original array in place, avoiding unnecessary memory allocations. * Can be used to add or remove multiple elements at once. Cons: * Modifies the original array, which can lead to unexpected behavior if the array is not intended to be modified. * Can be slower than creating a new set for large datasets due to the overhead of modifying an array. **Set:** Pros: * Creates a new, isolated collection of unique values, avoiding modifications to the original array. * Can be faster for large datasets since it avoids the overhead of modifying an array. Cons: * Requires more memory allocations and garbage collection, potentially leading to slower performance. * Does not provide direct access to elements like arrays do. **Library:** In this benchmark, `Set` is a built-in JavaScript data structure. The `Set` constructor creates a new set from the provided array using the `Array.prototype.map()` method to create an array of unique values. **Special JS feature or syntax:** This benchmark does not explicitly use any special JavaScript features or syntax beyond standard JavaScript. However, it's worth noting that modern browsers often optimize and cache frequently accessed methods like `splice()` and `Set().delete()`, which might affect the results. **Other alternatives:** 1. **Array.prototype.push()**: Instead of using `splice()`, one could use `push()` to add elements to the end of an array. 2. **Array.prototype.shift()**: Using `shift()` to remove elements from the beginning of an array instead of `splice(0, 1)`. 3. **Other data structures**: Alternative data structures like linked lists or trees could be used for comparison. Keep in mind that each alternative may introduce significant changes to the benchmark's behavior and results.
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