In Flutter, communication between widgets can use VoidCallback and Function Callback. VoidCallbacks are callbacks that don't return a value to the Parent Widget. This is useful if we only want to notify the Parent Widget of events that occurred on the Child Widget. The Function Callback is a callback that notifies the Parent Widget of an event that occurs in the Child Widget and also returns a value to the Parent Widget. typedef VoidCallback = void Function(); VoidCallbacks and Function...
