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teststest
(version: 0)
Comparing performance of:
Array Push vs Test Splice
Created:
5 years ago
by:
Guest
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Script Preparation code:
var array = []; for (var idx = 0; idx < 1000; idx++) { array[idx] = idx; }
Tests:
Array Push
array.push(123)
Test Splice
array.splice(array.length, 0, 123);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Array Push
Test Splice
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and benchmark preparation code to understand what is being tested. **What is being tested?** MeasureThat.net is testing the performance of two JavaScript operations: `array.push(123)` and `array.splice(array.length, 0, 123)`. These operations are commonly used in array manipulation scenarios. **Options compared** The provided benchmark compares two approaches to perform these operations: 1. **`array.push(123)`**: This approach uses the `push()` method to add an element to the end of the array. 2. **`array.splice(array.length, 0, 123)`**: This approach uses the `splice()` method to insert a new element at the beginning of the array. **Pros and Cons** **`array.push(123)`**: Pros: * Simple and intuitive implementation * Fast execution, as it only needs to update the internal state of the array Cons: * May cause intermediate array resizing, leading to slower performance in large arrays * Does not allow for efficient insertion at arbitrary positions **`array.splice(array.length, 0, 123)`**: Pros: * Allows for efficient insertion at arbitrary positions * Can be more efficient than `push()` when dealing with large arrays or inserting elements at the beginning Cons: * More complex implementation, which may lead to slower execution and increased overhead * May require temporary arrays or other optimization techniques to achieve good performance **Other considerations** Both approaches have limitations: * In both cases, modifying an array can be a costly operation, especially for large datasets. * These operations do not take into account modern JavaScript optimizations, such as lazy allocation or caching. **Library and special JS features used in the test case** The provided benchmark code does not explicitly mention any libraries. However, it uses native JavaScript methods (`push()` and `splice()`) that are part of the ECMAScript standard. **Special JS feature explanation (not applicable)** There is no special JavaScript feature or syntax mentioned in this benchmark.
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