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Some vs. Find for Paulius
(version: 0)
Comparing performance of:
Array.some vs Array.find
Created:
3 years ago
by:
Guest
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HTML Preparation code:
<script src=''></script>
Script Preparation code:
var hasZero = []; var withoutZero = []; for (var i = 0; i < 10000; i++) { hasZero.push(Math.floor(Math.random() * 1000)); withoutZero.push(Math.floor(Math.random() * 1000) + 1) }
Tests:
Array.some
var tempResult = !!Math.round(Math.random()) ? hasZero.some(v => v === 0) : withoutZero.some(v => v === 0);
Array.find
var tempResult = !!Math.round(Math.random()) ? hasZero.find(v => v === 0) !== undefined : withoutZero.find(v => v === 0) !== undefined;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Array.some
Array.find
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 compares the performance of `Array.some()` and `Array.find()` methods in JavaScript for finding a specific value within an array. **Let's break down what's happening:** 1. **Data Preparation:** The script generates two arrays: - `hasZero`: Contains random numbers between 0 and 999 (inclusive), ensuring at least one element is 0. - `withoutZero`: Contains random numbers between 1 and 999 (inclusive). No zeros are present. 2. **Benchmark Tests:** Two test cases are defined: - **`Array.some()`:** This test uses `Array.some()` to check if a value of `0` exists in the `hasZero` array or a non-zero value exists in the `withoutZero` array. The ternary operator (`? :`) is used to select the appropriate array based on a random number. - **`Array.find()`:** This test uses `Array.find()` to locate the first occurrence of `0` in the `hasZero` array or the first non-zero value in the `withoutZero` array. 3. **Measurement:** The benchmark measures how many times each test can be executed per second (ExecutionsPerSecond). Higher values indicate better performance. **Pros and Cons:** * **`Array.some()`**: * **Pro:** Generally faster if you just need to know *if* a specific value exists, as it stops iterating once a match is found. * **Con:** Doesn't return the actual value; only a boolean (true or false). * **`Array.find()`**: * **Pro:** Returns the actual value that matches your criteria. * **Con:** Iterates through the entire array even if a match is found early on, potentially being slower than `some()` in some cases. **Other Considerations:** * **Context Matters:** The best choice depends on your use case. If you only need to know *if* something exists, `Array.some()` is likely faster. If you need the actual value, `Array.find()` is necessary. * **Alternatives:** * **Manual Iteration (`for` loop):** You could manually iterate through the array using a `for` loop and compare each element to your target value. This might be less efficient than built-in methods. Let me know if you have any other questions or want to explore specific aspects of this benchmark in more detail!
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