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Push vs Filter
(version: 0)
Comparing performance of:
Push vs Filter
Created:
4 years ago
by:
Registered User
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Script Preparation code:
var strs = Array.from(new Array(10000)).map(() => 'String concat. ') var result = []
Tests:
Push
for (let i = 0; i < strs.length; i++) { result.push(strs[i]) }
Filter
result = strs.filter((a) => a)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Push
Filter
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain the benchmark. **What is being tested?** The provided JSON represents two individual test cases for measuring the performance of JavaScript microbenchmarks using MeasureThat.net. The tests compare the execution speed of two approaches: 1. **Push**: The first test case uses a traditional `push` method to add elements to an array. It iterates over the `strs` array and pushes each element onto the `result` array. 2. **Filter**: The second test case uses the `filter()` method to create a new array with elements that pass a certain condition. In this case, the condition is simply checking if the element exists. **Options compared** The two approaches differ in how they manipulate the data: * **Push**: The `push` method adds each element one by one to the end of the `result` array. * **Filter**: The `filter()` method creates a new array with only the elements that pass the condition, and assigns it back to the `result` variable. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Push**: + Pros: Simple, straightforward, and easy to understand. + Cons: Creates a new array object on every iteration, which can lead to performance issues with large datasets. * **Filter**: + Pros: More efficient for large datasets, as it creates a single new array object and uses a more optimized algorithm under the hood. + Cons: Can be less intuitive for beginners, as it relies on a callback function. **Library and syntax** Neither of the test cases uses any libraries or special JavaScript features. They are simple, vanilla JavaScript implementations of the `push` and `filter()` methods. **Other alternatives** If you're interested in exploring alternative approaches, here are some other options: * **Splice**: Instead of using `push`, you could use `splice()` to remove elements from the beginning of the array. * **Slice**: You could also use `slice()` to create a new array with a subset of elements. Keep in mind that these alternatives might have different performance characteristics and may not be as efficient as the `filter()` method for large datasets. It's worth noting that MeasureThat.net provides a way to compare the performance of different approaches, so you can easily run multiple tests and see which one performs better.
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