map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>({
  1. required TResult idle(
    1. DataStateIdle<T> value
    ),
  2. required TResult loading(
    1. DataStateLoading<T> value
    ),
  3. required TResult error(
    1. DataStateError<T> value
    ),
  4. required TResult success(
    1. DataStateSuccess<T> value
    ),
})

A switch-like method, using callbacks.

Callbacks receives the raw object, upcasted. It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case final Subclass2 value:
    return ...;
}

Implementation

@optionalTypeArgs TResult map<TResult extends Object?>({required TResult Function( DataStateIdle<T> value)  idle,required TResult Function( DataStateLoading<T> value)  loading,required TResult Function( DataStateError<T> value)  error,required TResult Function( DataStateSuccess<T> value)  success,}){
final _that = this;
switch (_that) {
case DataStateIdle():
return idle(_that);case DataStateLoading():
return loading(_that);case DataStateError():
return error(_that);case DataStateSuccess():
return success(_that);}
}