Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
2 dimensional calendar lookup array
(version: 0)
Comparing performance of:
No zeroing vs Zeroing
Created:
9 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var year = [];
Tests:
No zeroing
year[2016] = []; year[2016][1] = 100; year[2016][1];
Zeroing
year[0] = []; year[0][1] = 100; year[0][1];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
No zeroing
Zeroing
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
This benchmark does not have any results yet. Be the first one
to run it!
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Definition** The benchmark is designed to measure the performance of JavaScript in accessing an array within an array (also known as a nested array). The benchmark defines two arrays: `year` and `year[2016]`. However, instead of initializing the inner array with some values, it sets it to an empty array using `[] = []`. The purpose of this benchmark is likely to test how JavaScript engines handle accessing an empty array versus a non-empty array. Specifically, it's testing whether the engine can: 1. Initialize the inner array on the fly when accessing it for the first time. 2. Return a reference to the inner array when accessing it. **Options Compared** Two options are being compared in this benchmark: 1. **Initializing the inner array with an empty array**: `year[2016] = []` * Pros: This approach allows the engine to allocate memory for the inner array and initialize it immediately. * Cons: It may lead to unnecessary memory allocation and garbage collection if the inner array is not used again in the same scope. 2. **Not initializing the inner array**: `year[2016] = []` (empty assignment) * Pros: This approach can help avoid unnecessary memory allocation and garbage collection, especially if the inner array is only needed for a short time or is not reused. * Cons: It may lead to slower performance due to the need to allocate memory on the fly when accessing the inner array. **Library Usage** None of the test cases use any JavaScript libraries. The benchmark is focused solely on testing the behavior of the JavaScript engine. **Special JS Features/Syntax** This benchmark does not use any special JavaScript features or syntax, such as async/await, promises, or closures. **Other Alternatives** There are other alternatives to measure performance in a similar way: * Accessing an object property instead of an array: `year[2016] = { foo: 100 }` * Using a different data structure, such as a Map or Set * Adding noise to the benchmark by introducing unrelated operations or variables Keep in mind that these alternatives may not be directly relevant to this specific benchmark, but they could provide useful insights into the performance characteristics of JavaScript engines. Overall, the benchmark is designed to test the efficiency of JavaScript engines in handling array initialization and access. The results can help developers understand how their code will perform in different scenarios and optimize it accordingly.
Related benchmarks:
Generate Date In A Month
Array Apply vs Array Spread
Array Apply vs Array Spread vs Array Fill
Shiogui - Push x Reduce Logged
Comments
Confirm delete:
Do you really want to delete benchmark?