Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Array from
(version: 0)
Comparing performance of:
aaaaaaaaaa vs bbbbbbbbb
Created:
4 years ago
by:
Guest
Jump to the latest result
Tests:
aaaaaaaaaa
const arr = [{name: 'Igor'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}]; const newarr = arr.map((i) => ({...i, lastName: 'Pupkin'}));
bbbbbbbbb
const arr = [{name: 'Igor'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}, {name: 'Ivan'}]; const newarr = Array.from(arr, (i) => ({...i, lastName: 'Pupkin'}))
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
aaaaaaaaaa
bbbbbbbbb
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 test cases and explain what is being tested. **Benchmark Definition** The benchmark definition is provided in JSON format, which includes: * `Name`: The name of the benchmark (in this case, "Array from"). * `Description`: An empty description for the benchmark. * `Script Preparation Code` and `Html Preparation Code`: Empty fields that might be used to specify additional setup code or HTML to render before running the test. **Individual Test Cases** The test cases are defined as an array of objects, each representing a single test. In this case, there are only two test cases: 1. **Test Case 1**: This test creates an array `arr` with 26 elements, and then maps over it to create a new array `newarr`. The resulting arrays are compared. 2. **Test Case 2**: This test is similar to Test Case 1, but uses the `Array.from()` method instead of `map()`. The same comparison is performed between the original `arr` and the newly created `newarr`. **Libraries** Neither of these test cases explicitly uses a library for their execution. However, it's worth noting that JavaScript engines like V8 (used by Google Chrome) or SpiderMonkey (used by Mozilla Firefox) would typically be involved in executing this code. **Special JS Features/Syntax** Neither of the test cases uses any special JavaScript features or syntax. They are simple array operations using standard methods (`map()` and `Array.from()`). **Options Compared** The two test cases compare the performance of using `map()` versus `Array.from()`. Both methods achieve similar results, but with different overhead. * **`map()`**: Creates a new array by applying a provided function to each element in the original array. It's generally faster and more memory-efficient than `Array.from()`, but can be less predictable due to potential side effects. * **`Array.from()`**: Creates a new array from an iterable (in this case, the original array). It's often used when working with legacy code or when you need to ensure that the resulting array is always in a specific format. **Pros and Cons** Here are some pros and cons of each approach: * **`map()`**: + Pros: - Typically faster - More memory-efficient - Less predictable side effects + Cons: - May not be as explicit or readable in its intent - Can lead to unexpected behavior if the provided function has side effects * **`Array.from()`**: + Pros: - Often used for clarity and readability (e.g., when you want to ensure that a new array is always in a specific format) - Less prone to side effects than `map()` + Cons: - Typically slower than `map()` - More memory-intensive due to the creation of a new array **Other Alternatives** If you were considering alternative approaches, some options might include: * **Using a library or framework that provides optimized array operations**, such as Lodash or Ramda. * **Using a Just-In-Time (JIT) compiler**, which can optimize array operations at runtime. * **Writing custom JavaScript code** to achieve the desired performance and readability characteristics. Keep in mind that these alternatives might introduce additional complexity, dependencies, or trade-offs compared to using standard JavaScript methods like `map()` and `Array.from()`.
Related benchmarks:
Get last array element
teststest
teststest1
dfgdfuytuty
testando 123 teste
Comments
Confirm delete:
Do you really want to delete benchmark?