Implement Promise.all Behavior | Dataford Interview Questions

Manually implement a function that behaves like Promise.all().

For this coding exercise, the input contains already-resolved values, since JSON test cases cannot represent live promises or awaitables. Return all values in their original input order, including when completion order would differ in a real asynchronous implementation. An empty input must return an empty list.

Constraints

0 <= len(promises) <= 10^5
Each element is a JSON-compatible value
Return values in the same order as the input
The input is not modified

Function Signature

def promise_all(promises):

Your question is Implement Promise.all Behavior. Start with the requirements in the Question tab.

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Problem

Manually implement a function that behaves like Promise.all().

Constraints

0 <= len(promises) <= 10^5
Each element is a JSON-compatible value
Return values in the same order as the input
The input is not modified

Function Signature

def promise_all(promises):

Your question is Implement Promise.all Behavior. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.