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Length Check Sort vs Empty Sort
(version: 0)
Comparing performance of:
Checked vs Un-Checked
Created:
5 years ago
by:
Guest
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Tests:
Checked
const array = [] const sorted = array.length ? array.sort((a, b) => a - b ) : array
Un-Checked
const array = [] const sorted = array.sort((a, b) => a - b )
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Checked
Un-Checked
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 dive into explaining the provided JavaScript benchmark. **Benchmark Overview** The benchmark is designed to compare two approaches for sorting an empty array in JavaScript: one with explicit length check (`checked`) and another without it (`unchecked`). The goal is to determine which approach is faster, assuming a modern JavaScript engine. **Options Compared** In this benchmark, there are only two options being compared: 1. `Checked`: This option uses an explicit length check before sorting the array. It checks if the array has a non-zero length and only sorts it if so. 2. `Unchecked`: This option does not perform any length check before sorting the array. **Pros and Cons** * **Checked**: The explicit length check can prevent unnecessary work when the array is empty, which might be beneficial for performance-critical code. However, it may also introduce a small overhead due to the extra check. * **Unchecked**: Without the length check, the sort function will always execute, even if the array is empty. This approach is likely faster since it eliminates the need for an additional check. **Library and Special JS Features** In this benchmark, no external libraries are used, and there are no special JavaScript features mentioned (e.g., async/await, Promises, etc.). The focus is solely on comparing two simple array sorting approaches. **Alternative Approaches** If you were to create a similar benchmark for a different scenario, you might want to consider the following alternatives: * Compare the performance of using `Array.prototype.sort()` versus a custom sorting function. * Evaluate the impact of using different data structures (e.g., linked lists, trees) on sorting performance. * Test the effect of various input sizes on sorting algorithms. **Benchmark Preparation Code** The provided preparation code consists of two simple JavaScript scripts: 1. The first script creates an empty array and attempts to sort it with both `checked` and `unchecked` approaches. 2. The second script only performs the `unchecked` approach, which is likely intended to be compared against the `checked` approach. **Other Considerations** When running benchmarks like this one, it's essential to keep in mind: * Use a controlled environment: Try to minimize external factors that might influence performance, such as concurrent executions or memory constraints. * Run multiple iterations: Execute the benchmark multiple times to ensure reliable results and account for any transient effects. * Be aware of engine quirks: Different JavaScript engines (e.g., V8, SpiderMonkey) may exhibit unique behavior when it comes to array sorting.
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