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new array vs new set
(version: 0)
Comparing performance of:
new array vs new set
Created:
2 years ago
by:
Guest
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Tests:
new array
void []
new set
void new Set()
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
new array
new set
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
4 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:146.0) Gecko/20100101 Firefox/146.0
Browser/OS:
Firefox 146 on Windows
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<iframe src="https://measurethat.net/Embed?id=622662" width="100%" height="500px"></iframe>
Test name
Executions per second
new array
760239552.0 Ops/sec
new set
35237440.0 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark information. **Benchmark Definition and Preparation Code** The benchmark definition is a JSON object that describes the test case: * `Name`: The name of the benchmark, which is "new array vs new set". * `Description`: A brief description of the benchmark, but it's not provided in this case. * `Script Preparation Code` and `Html Preparation Code`: These fields are empty, indicating that no specific setup or configuration code needs to be executed before running the test. **Individual Test Cases** The benchmark consists of two individual test cases: 1. **"new array"`**: The test case definition is `void []`, which means it's testing an array creation without any elements. 2. **"new set"`**: The test case definition is `void new Set()`, which creates a new instance of the Set data structure. **Pros and Cons of Different Approaches** The benchmark compares two approaches: 1. **Array Creation (`void []`)**: In JavaScript, arrays are created using the square bracket notation (`[]`). When creating an empty array, only memory allocation is required, as no elements need to be initialized. This approach has low overhead. 2. **Set Creation (`void new Set()`**): Sets in JavaScript are also created using the constructor function (`new Set()`). Creating a set requires more overhead than creating an array because sets have to allocate space for each element and maintain a hash table to store the elements. **Pros of Array Creation** * Low memory allocation overhead * Fast initialization time **Cons of Array Creation** * Limited functionality compared to arrays (e.g., no built-in methods like `push()` or `indexOf()`) **Pros of Set Creation** * Provides a unique data structure with features like fast membership testing and set operations * Can be useful in certain scenarios where sets are the preferred data type **Cons of Set Creation** * Higher memory allocation overhead compared to arrays * Slower initialization time due to the need to allocate space for each element and maintain a hash table **Other Considerations** When choosing between array creation and set creation, consider the specific requirements of your application: * If you need to perform frequent membership testing or set operations, a Set might be a better choice. * If memory efficiency is crucial, and you don't need the additional functionality provided by Sets, an array might be a more suitable option. **JavaScript Features** Neither of the test cases uses special JavaScript features like async/await, closures, or modules.
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