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werwrewrewer
(version: 0)
Comparing performance of:
weewwewe vs 23243432
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var test = []; for(let i = 0; i < 100000; i ++) { test.push({id: i, value: 300 + i}); }
Tests:
weewwewe
test.filter((data) => data.value > 30000).map((data) => { return {...data, checkValue: true}});
23243432
test.reduce((acc, data) => { if(data.value > 30000) { acc.push({...data, checkValue: true}); } return acc; }, []);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
weewwewe
23243432
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark tests the performance of two different methods for filtering and processing an array of objects in JavaScript: **Method 1: `.filter()` and `.map()`** * **Benchmark Definition:** `test.filter((data) => data.value > 30000).map((data) => { return {...data, checkValue: true}});` This approach uses the `filter()` method to create a new array containing only objects where the `value` property is greater than 30000. Then, it uses the `map()` method to iterate over this filtered array and create new objects with an additional property `checkValue` set to `true`. **Method 2: `.reduce()`** * **Benchmark Definition:** `test.reduce((acc, data) => { if(data.value > 30000) { acc.push({...data, checkValue: true}); } return acc }, []);` This approach uses the `reduce()` method to iterate over the array and accumulate a new array (`acc`) containing objects meeting the criteria. For each object (`data`), if its `value` is greater than 30000, it's cloned with the added `checkValue: true` property and pushed into the accumulator array. **Pros and Cons:** * **.filter()/.map():** * **Pros:** More readable and concise code. `filter()` creates a new array without modifying the original, while `map()` transforms each element separately. * **Cons:** Can be less efficient for large arrays if both filtering and transformation are performed. * **.reduce():** * **Pros:** Potentially more efficient if only a single pass through the array is needed to achieve the desired outcome. It can also be used for various other array manipulations. * **Cons:** Can lead to more complex code, especially for beginners. **Other Considerations:** * **Array Size:** The performance difference between these methods might be negligible for small arrays but become more pronounced as the size increases. * **Data Structure:** The specific nature of the data within `test` could influence which method performs better. If there are many properties besides `value`, using `reduce()` to clone objects might be less efficient than `map()`. Let me know if you have any more questions or want to explore specific aspects in more detail!
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