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promise all vs settled
(version: 0)
Comparing performance of:
promise.all vs promise.settled
Created:
3 years ago
by:
Guest
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Tests:
promise.all
Promise.all
promise.settled
Promise.settled
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
promise.all
promise.settled
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 benchmark and explain what's being tested, compared, and considered. **Benchmark Overview** The benchmark compares the performance of two promise-related functions: `Promise.all` and `Promise.settled`. These functions are part of the Promise API in JavaScript, which allows developers to write asynchronous code that's easier to read and maintain. **What are promises?** In JavaScript, a promise is an object that represents a value that may not be available yet, but will be resolved at some point in the future. Promises provide a way to handle asynchronous operations, such as making network requests or reading files, in a more manageable and predictable way. **Promise.all vs Promise.settled** The two functions being compared are: 1. **Promise.all**: Returns an array of values when all promises in the input array have resolved. 2. **Promise.settled**: Returns an object with arrays of fulfilled and rejected promises. **Options Compared** In this benchmark, we're comparing the performance of these two functions on a set of test cases. The options being compared are: * **Promise.all**: This function returns as soon as any of the promises in the input array have resolved. * **Promise.settled**: This function returns as soon as all promises in the input array have been checked for fulfillment or rejection. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Promise.all**: + Pros: Efficient, returns early when any promise resolves. + Cons: May return prematurely if some promises resolve before others. * **Promise.settled**: + Pros: Returns all resolved or rejected values, may be more predictable. + Cons: May be slower due to the need to check each promise individually. **Other Considerations** When using these functions, it's essential to consider the following: * **Error handling**: Both functions can throw errors if any of the promises in the input array reject. You should always handle potential errors properly. * **Promise dependencies**: When using `Promise.all`, you need to ensure that the promises are independent and don't depend on each other. **Library Usage** In this benchmark, no libraries are mentioned. The functions being compared (`Promise.all` and `Promise.settled`) are part of the built-in JavaScript Promise API. **Special JS Features or Syntax** No special JavaScript features or syntax are used in this benchmark. **Alternatives** If you need to compare promise-related functions, you may also want to consider: * **Bluebird**: A popular promise library that provides a more comprehensive set of promise-related functions. * **P-Promise**: Another promise library that offers a similar API to the built-in JavaScript Promise API. Keep in mind that using external libraries can add overhead and dependencies to your project. The built-in JavaScript Promise API is generally sufficient for most use cases. I hope this explanation helps you understand what's being tested in this benchmark!
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