What is a Future and how do I use it?

Question

I get the following error:

A value of type \'Future\' can\'t be assigned to a variable of type \'int\'
         


        

Answer 1

Future returning the potential value which will be done by async work

Eg:

Future getValue() async {
    return Future.value(5);
  }

Above code is returning Future.value(5) which is of int type, but while receiving the value from method we can't use type Future i.e

Future value = await getValue();  // Not Allowed
// Error
A value of type 'Future' can't be assigned to a variable of type 'int'

To solve above getValue() should be received under int type

  int value = await getValue(); // right way as it returning the potential value.