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push vs spread v3
(version: 0)
Comparing performance of:
push vs spread
Created:
4 years ago
by:
Guest
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Tests:
push
let r = ['asdfsadfsf', 'asdfsdf', 'asdfsadfsadfsf', 'asdfsdafsdf', 'asdfasfasdfasdfsdf'] r.push('ad')
spread
let r = ['asdfsadfsf', 'asdfsdf', 'asdfsadfsadfsf', 'asdfsdafsdf', 'asdfasfasdfasdfsdf'] r = [...r, 'ad']
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
push
spread
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 help you understand the provided benchmark. **Benchmark Overview** The benchmark compares the performance of two approaches: using `push()` and using the spread operator (`...`) with array literals, in JavaScript version 3. **Options Compared** There are two main options being compared: 1. **`push()`**: This method adds a new element to the end of an array and returns the new length of the array. 2. **Spread Operator (`...`)**: This operator creates a new array by spreading elements from an existing array or values. **Pros and Cons** * **`push()`**: + Pros: Can be more efficient in terms of memory allocation, as it modifies the original array in place. + Cons: Can be slower due to the overhead of modifying the array's internal state. * **Spread Operator (`...`)**: + Pros: Creates a new array without modifying the original, which can be faster and more predictable for performance-critical code. + Cons: Requires creating a new array object, which can lead to increased memory allocation. **Library Used** In this benchmark, no specific library is used. The JavaScript engine itself handles the execution of the test cases. **Special JS Feature or Syntax** There are no special JavaScript features or syntaxes being tested in this benchmark. **Other Considerations** The benchmark uses a simple array creation and modification pattern to simulate real-world usage scenarios. **Alternative Approaches** Some alternative approaches that might be worth considering include: 1. **Using `unshift()`**: This method adds an element to the beginning of an array, which can be slower than `push()`. 2. **Using a data structure other than arrays**: Depending on the specific use case, using a different data structure, such as a linked list or a stack, might provide better performance. 3. **Parallelizing the tests**: Running multiple threads or processes concurrently to test both options simultaneously. Keep in mind that this benchmark is focused specifically on comparing the performance of `push()` and the spread operator (`...`) with array literals, so these alternative approaches may not be relevant to this particular use case.
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