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Temp11111111111111111111111111111111111111111111111111111111
(version: 0)
Comparing performance of:
slice vs splice vs shift
Created:
5 years ago
by:
Guest
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Tests:
slice
var list = []; for (var i = 0; i < 1000 * 1000; i++) { list.push(i); }
splice
var list = []; for (var i = 0; i < 1000 * 100; i++) { list.push(i); }
shift
var list = []; for (var i = 0; i < 1000 * 10; i++) { list.push(i); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
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Test case name
Result
slice
splice
shift
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON and explain what's being tested on MeasureThat.net. **Benchmark Definition** The `Benchmark Definition` is a simple JavaScript code snippet that creates an empty array and populates it with numbers using three different methods: 1. `slice()`: Creates a shallow copy of the array from the specified start index to the end. 2. `splice()`: Removes elements from the array starting at the specified index and replaces them with new elements. **Options Compared** The options being compared are: * `slice()` * `splice()` These two methods have different performance characteristics, which is what MeasureThat.net aims to measure and compare. **Pros and Cons of Different Approaches** 1. **Slice()**: * Pros: More efficient and less memory-intensive than `splice()` for creating a shallow copy of an array. * Cons: May not be suitable for modifying arrays in place, as it creates a new array object. 2. **Splice()**: * Pros: Allows for in-place modification of the original array, which can be useful when working with large datasets or performance-critical code. * Cons: Less efficient and more memory-intensive than `slice()` due to the overhead of removing elements from the array. **Other Considerations** When choosing between `slice()` and `splice()`, consider the following factors: * **Array size**: For smaller arrays, `slice()` is likely to be faster. For larger arrays, `splice()` may perform better. * **Array modification**: If you need to modify the original array in place, use `splice()`. Otherwise, `slice()` might be a better choice. **Library and Special JS Features** None of the provided benchmark definitions uses any external libraries or special JavaScript features beyond the built-in `Array` methods. **Other Alternatives** If you're interested in exploring other alternatives for creating arrays or modifying them, consider the following: * **Array.prototype.map()`: Creates a new array with the results of applying a provided function to each element in the original array. * **Array.prototype.reduce()`: Applies a provided function to each element in the array and reduces it to a single value. Keep in mind that these alternatives might have different performance characteristics than `slice()` and `splice()`, so they may not be suitable for all use cases.
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