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EcmaScript6 Uint32Array vs regular JS array
(version: 0)
Comparing performance of:
Uint32Array vs Plain JS array
Created:
2 years ago
by:
Registered User
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Script Preparation code:
var int32 = new Uint32Array(100); var regular = []; for(var i=0;i<100;i++){ int32[i] = i; regular.push(i); }
Tests:
Uint32Array
var sum = 0; for(var i=0;i<100;i++){ sum = sum + int32[i]; }
Plain JS array
var sum = 0; for(var i=0;i<100;i++){ sum = sum + regular[i]; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Uint32Array
Plain JS array
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
6 months ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0
Browser/OS:
Firefox 143 on Windows
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Test name
Executions per second
Uint32Array
19782276.0 Ops/sec
Plain JS array
19484088.0 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to help explain the provided benchmark. **Benchmark Overview** The test case compares the performance of using `Uint32Array` with regular JavaScript arrays (also known as plain JavaScript arrays) in two different scenarios: 1. Creating an array and pushing elements into it 2. Iterating over an array to calculate a sum **Options Compared** In this benchmark, we have two options being compared: a. **Uint32Array**: A typed array that provides efficient storage and manipulation of 32-bit unsigned integers. b. **Plain JavaScript Array**: An array data structure built into the JavaScript language that can store any type of value. **Pros and Cons of Each Approach** **Uint32Array:** Pros: * Offers faster performance compared to plain arrays for certain operations, such as storing and manipulating large amounts of numerical data. * Provides better memory management and reduces memory allocation overhead. Cons: * Can be less convenient to use for general-purpose array operations due to its typed nature. * May require more explicit handling of edge cases (e.g., null or undefined values). **Plain JavaScript Array:** Pros: * Is generally easier to use and more flexible than Uint32Array, making it suitable for a wide range of applications. * Supports dynamic addition and removal of elements. Cons: * Can be slower compared to Uint32Array for operations involving numerical data, especially when dealing with large arrays. **Considerations** When choosing between these two approaches, consider the specific requirements of your use case. If you're working with numerical data or need high-performance storage and manipulation capabilities, `Uint32Array` might be a better choice. However, if you need more flexibility in terms of data types or are dealing with non-numerical data, plain JavaScript arrays might be more suitable. **Library Used** In the provided benchmark, there is no explicit library mentioned that's being used outside of the built-in JavaScript language features. **Special JS Features or Syntax** There isn't any special JavaScript feature or syntax explicitly mentioned in this benchmark. However, note that modern JavaScript also includes features like async/await, `let` and `const` declarations, classes, and more, which can impact performance and behavior. **Other Alternatives** If you're looking for alternative approaches to arrays in JavaScript, consider: * **TypedArray objects**: These provide similar functionality to Uint32Array but with a more dynamic type system. * **BigInt**: For large integers that exceed the range of 32-bit or 64-bit unsigned integers. * **Data views**: Allow you to interact with typed array data as if it were an object, providing a different API than regular arrays. Keep in mind that these alternatives might not always offer better performance compared to Uint32Array and plain arrays.
Related benchmarks:
Array construct vs array push
Array Push vs. Index Access
Array.from() vs new Array() vs push
Array.from() vs new Array() vs push pushup
Array.push(x) vs array[n]=x
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