12. Dart - Async & Await

Asynchronous functions run after a delay or timer had run.


Creating a delayed async function:

void function() {

Future.delayed(Duration(seconds: #),(){})

}

// Future has a delayed method that takes in two arguments. Duration and a function argument. The function runs after the duration.

// Duration is a built in class in Dart.


Using await type:

void function() async{

await Future.delayed(Duration(seconds: #),(){})

}

// Specifying the function as an async type and using await will tell function to only resume the next block of line only after the first await finishes.

// can layer many types of await(s) under each other.


Using await type as a variable to get return values:

void function() async{

    String text = await Future.delayed(Duration(seconds: #),(){

        return "HELLO";

    })

}

// making the await function a variable lets us use it in other parts of the code

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