/TypeScript/Pass function as argument typescript

Pass function as argument typescript

class Foo {
    save(callback: (n: number) => any) : void {
        callback(42);
    }
}
var foo = new Foo();

var strCallback = (result: string) : void => {
    alert(result);
}
var numCallback = (result: number) : void => {
    alert(result.toString());
}

foo.save(strCallback); // not OK
foo.save(numCallback); // OK

Source: stackoverflow.com

Typescript function as parameter

function createPerson(name: string, doAction: () => void): void {
  console.log(`Hi, my name is ${name}.`);
  doAction(); // doAction as a function parameter.
}

// Hi, my name is Bob.
// performs doAction which is waveHands function.
createPerson('Bob', waveHands());

Similar codes

0 vote250 views1 answer
Google chrome keyboard shortcuts windows
TypeScript
2 votes255 views1 answer
NotificationManager has not been initialized
TypeScript
1 vote291 views3 answers
VirtualizedLists should never be nested inside plain ScrollViews with the same orientation - use another VirtualizedList-backed container instead.
TypeScript
10 votes262 views2 answers
Python first n elements of list
TypeScript
6 votes253 views3 answers
Angular show element in component
TypeScript
0 vote259 views1 answer
Run an applescript
TypeScript
1 vote291 views1 answer
Contextual typing in typescript
TypeScript
16 votes261 views1 answer
Looping through two lists python
TypeScript
0 vote253 views1 answer
Terminal prompts disabled
TypeScript
0 vote243 views1 answer
Loading assets in ionic react
TypeScript