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find vs some on 10,000 rows
(version: 0)
Comparing performance of:
find vs some
Created:
4 years ago
by:
Guest
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Script Preparation code:
var dataArray = []; for (let i = 0; i < 10000; ++i) dataArray.push({ username: 'toto' })
Tests:
find
dataArray.find(e => e.username === 'titi')
some
dataArray.find(e => e.username === 'titi')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
find
some
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain what's being tested in the provided benchmark. **Benchmark Overview** The test measures the performance of two different methods: `find` and `some`, on an array of 10,000 elements with a specific property (`username`) that is not present in all elements. The goal is to find the first element that matches the specified condition. **Options being compared** Two options are being compared: 1. **`Array.prototype.find()`**: This method returns the first element in the array that satisfies the provided testing function. 2. **`Array.prototype.some()`**: This method returns `true` if at least one element in the array satisfies the provided testing function. **Pros and Cons** * **`find()`**: * Pros: It's a more explicit way of finding the first matching element, which can be beneficial for code readability and maintainability. * Cons: If no elements match the condition, it will return `undefined`. In this case, it might be better to use a different approach or handle the edge case explicitly. * **`some()`**: * Pros: It's a more concise way of checking if any elements in the array satisfy the condition. If at least one element matches, it returns `true`, which can simplify the code and avoid unnecessary iterations. * Cons: It returns `true` as soon as it finds a matching element, so if you want to process all matching elements, this method might not be suitable. **Library usage** In this benchmark, no libraries are used. The tests only rely on built-in JavaScript array methods (`find()` and `some()`). **Special JS features or syntax (none)** There's no mention of any special JavaScript features or syntax in the provided test cases. **Other alternatives** If you prefer a different approach, here are some alternative ways to find the first matching element: * **Using `forEach()`**: You can iterate over the array using `forEach()` and return as soon as you find a matching element: `dataArray.forEach(e => { if (e.username === 'titi') { // Return or process the match } })`. However, this approach is not competitive with the built-in `find()` method. * **Using `map()`**: You can use `map()` to create a new array with all matching elements and then find the first one: `dataArray.map(e => e.username === 'titi').find(e => e !== undefined)`. However, this approach is also not as efficient as using `some()`. * **Using a simple loop**: You can use a traditional for loop to iterate over the array and return as soon as you find a matching element: `for (let i = 0; i < dataArray.length; ++i) { if (dataArray[i].username === 'titi') { // Return or process the match } }`. However, this approach is also not competitive with the built-in `find()` method. In summary, the test measures the performance of two different methods: `find` and `some`, on an array of 10,000 elements with a specific property (`username`) that is not present in all elements. The `find()` method returns the first element that matches the specified condition, while the `some()` method returns `true` if at least one element in the array satisfies the condition.
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