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JS some vs find
(version: 0)
Comparing performance of:
Find vs Some
Created:
6 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = []; var i = 0; while(i < 100000) { arr.push('dummy' + i); i++; } arr.concat(['Admin', 'SuperAdmin']);
Tests:
Find
arr.find(role => role === 'Admin' || role === 'SuperAdmin');
Some
arr.some(role => role === 'Admin' || role === 'SuperAdmin');
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
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 finding a specific element within an array in JavaScript: `find` and `some`. **Here's a breakdown:** * **Setup:** The benchmark starts by creating a large array (`arr`) containing 100,000 strings. This simulates a scenario where you might have a significant amount of data to search through. * **Test Cases:** * **`find`:** This method searches the array for the first element that satisfies a given condition (in this case, `role === 'Admin'` or `role === 'SuperAdmin'`). It returns the found element if successful, otherwise it returns `undefined`. * **`some`:** This method checks if *at least one* element in the array satisfies the given condition. It returns `true` if a match is found, and `false` otherwise. **Pros and Cons:** * **`find`:** * **Pro:** Returns the specific element that matches the condition, which can be useful if you need to work with the found value directly. * **Con:** If no matching element is found, it returns `undefined`, which might require additional checks in your code. * **`some`:** * **Pro:** Provides a simple way to check if *any* element meets the condition, without needing to retrieve the actual element itself. * **Con:** Doesn't return the matching element; you'd need to use `find` or another method if you need to work with the found value. **Other Considerations:** * **Data Size:** The performance difference between `find` and `some` might be more noticeable with larger arrays. * **Specificity of the Condition:** If your condition is complex, `find` could potentially perform slower as it has to iterate through more elements until it finds a match. `some` might be faster if the condition is simple enough that it can be checked early in the iteration. **Alternatives:** * **Manual Iteration:** You could manually loop through the array using a `for` or `forEach` loop and check each element against your condition. This gives you more control but can be less efficient than built-in methods. * **Libraries:** Libraries like Lodash offer similar functions to `find` and `some` that may optimize performance further. Let me know if you have any other questions!
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