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Some vs Find bool vs findIndex bool 2
(version: 0)
Benchmark.js
Comparing performance of:
Find vs Some vs FindIndex
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var data = [] for (let i = 0; i < 5000; ++i) data.push({ username: 'toto' }) data.push({ username: 'titi' }) for (let i = 0; i < 2500; ++i) data.push({ username: 'toto' })
Tests:
Find
!!data.find(e => e.username === 'titi')
Some
data.some(e => e.username === 'titi')
FindIndex
!!data.findIndex(e => e.username === 'titi')
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Find
Some
FindIndex
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36
Browser/OS:
Chrome 122 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=512919" width="100%" height="500px"></iframe>
Find
166K/s
FindIndex
156K/s
Some
152K/s
View exact numbers
Test name
Executions per second
✓
Find
165,785 Ops/sec
FindIndex
155,972 Ops/sec
Some
151,501 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
**What is being tested?** MeasureThat.net is testing the performance of three different methods for finding an element in an array: 1. `find`: This method returns the first element that satisfies the provided condition, or `undefined` if no elements satisfy it. 2. `some`: This method returns `true` as soon as an element satisfies the provided condition, and `false` only after checking all elements. 3. `findIndex`: This method returns the index of the first element that satisfies the provided condition, or `-1` if no elements satisfy it. **Comparison of options** The three methods are compared in terms of their execution time: * `some`: It's likely to be faster than `find` because it stops searching as soon as it finds a match. However, it may not always find the desired element. * `find`: It's more straightforward and consistent than `some`, but its performance may degrade when dealing with large arrays or sparse data. * `findIndex`: Its performance is generally better than `find` for finding the index of an element, especially in cases where the array is very large. **Pros and Cons** Here are some pros and cons for each method: * `some`: + Pros: Can be faster if it finds a match early on. + Cons: May not find the desired element if no matches are found. * `find`: + Pros: Consistent and straightforward. + Cons: Performance may degrade for large arrays or sparse data. * `findIndex`: + Pros: Generally better performance than `find` when finding an index. + Cons: May not be as efficient if the array is very large. **Library usage** There is no explicit library usage in the provided benchmark code. However, it's worth noting that `Array.prototype.find` and `Array.prototype.findIndex` are methods on the Array prototype, which means they're built-in to JavaScript. If you were to write a custom implementation for these methods, you would need to use a data structure like a binary search tree or a hash table to efficiently find elements in large arrays. Alternatively, you could use a library like Lodash, which provides optimized implementations of these methods. **Special JS feature or syntax** There are no special JavaScript features or syntax used in this benchmark code. It only uses standard JavaScript language constructs and built-in array methods. **Other alternatives** If you wanted to measure the performance of other methods for finding an element in an array, some alternative approaches might include: * Manual iteration: Using a loop to iterate over the elements of the array. * Binary search: Using a binary search algorithm to find an element in a sorted array. * Hashing: Using a hash table data structure to quickly look up elements. Keep in mind that these alternatives would likely have different performance characteristics and trade-offs compared to the `find`, `some`, and `findIndex` methods used in this benchmark.
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