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new Set vs set.clear()
(version: 0)
Comparing performance of:
new Set vs set.clear()
Created:
2 years ago
by:
Registered User
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Tests:
new Set
let set = new Set([0, 1, 2, 3]) set = new Set()
set.clear()
let set = new Set([0, 1, 2, 3]) set.clear()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
new Set
set.clear()
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
3 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36 Edg/143.0.0.0
Browser/OS:
Chrome 143 on Windows
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<iframe src="https://measurethat.net/Embed?id=623513" width="100%" height="500px"></iframe>
Test name
Executions per second
new Set
13437402.0 Ops/sec
set.clear()
11995722.0 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explore what's being tested in the benchmark. **Benchmark Definition** The provided JSON defines a simple benchmark that compares two approaches: 1. `new Set()`: Creates an empty set using the `Set` constructor. 2. `set.clear()` : Clears an existing set by calling its `clear()` method. **Options Compared** In this benchmark, we have two options being compared: * **Option 1: Creating a new set using `new Set()`**: This approach creates a new set from scratch. The benefits of this approach include: + No need to modify an existing set. + Can be faster if the set is empty or has few elements. However, there are also potential downsides: + May involve more memory allocation and garbage collection. * **Option 2: Clearing an existing set using `set.clear()`**: This approach modifies an existing set. The benefits of this approach include: + Can be faster if the set is large or has many elements. + Avoids the need for additional memory allocation. However, there are also potential downsides: + Requires modifying an existing object, which can be slower. **Pros and Cons** The choice between creating a new set using `new Set()` and clearing an existing set using `set.clear()` depends on various factors, such as: * Performance: If the set is large or has many elements, clearing it might be faster. * Memory allocation: Creating a new set can involve more memory allocation, which may be a concern in low-memory environments. * Code readability: Using `new Set()` can make code more readable and explicit. **Library** The `Set` class is a built-in JavaScript object that provides a collection of unique values. It's used to efficiently store and manipulate sets of elements. In this benchmark, the `Set` class is used to create and clear sets. **Special JS feature or syntax** There are no special JavaScript features or syntaxes being tested in this benchmark. The code only uses standard JavaScript constructs and built-in objects like `Set`. **Other Alternatives** Other alternatives for creating a set might include: * Using an array with a single element, where the element is a string or another value that can be used to identify uniqueness (e.g., `[1, 2, 3]`). * Using a library like Lodash's `uniq` function. * Creating a custom implementation using a data structure like a trie. However, these alternatives might not provide the same performance and efficiency as the built-in `Set` class in modern JavaScript engines.
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