anyway to count how many times a closure has been ran?

Asked Dec 20 '21 at 21:41

Active Dec 20 '21 at 21:51

Viewed 19 times

want to check if the closure that is being used had run more than 4 times if so return undefined.

const helloWorld = thrice(function () {
  return 'Hello World';
});
// helloWorld is the function returned from `thrice`
const firstCall = helloWorld();
// firstCall === "Hello World";

const secondCall = helloWorld();
// secondCall === "Hello World";

const thirdCall = helloWorld();
// thirdCall === "Hello World";

const fourthCall = helloWorld();
// fourthCall === undefined;

const fifthCall = helloWorld();
// fifthCall = undefined;

asked Dec 20 '21 at 21:41

Angelo

So what was your attempt at `thrice`? – epascarello Dec 20 '21 at 21:50
You'll need to create a variable outside of your function, and increment it each time the function is called. – user3094755 Dec 20 '21 at 21:52
A functional approach: https://tsplay.dev/N9pz9w – jsejcksn Dec 20 '21 at 22:08
`function thrice(fun) { let counter = 0; return function () { counter++; if(counter > 3) { return undefined; } return fun(); }; }` – epascarello Dec 20 '21 at 22:35

anyway to count how many times a closure has been ran?

0 Answers0