flutter - Dart - A value of type 'bool' can't be assigned to a variable of type 'bool'

Question

Pasting the following into dartPad.dev gives the error for the assignment classtwoInstance.fieldOne = arg;

Error: A value of type 'bool' can't be assigned to a variable of type 'bool'

Casting to a bool also gives an 'unnecessary cast' message

How do I assign the bool argument arg to fieldOne?

class ClassOne {
     Function<T>(T) setFunction;
  
     ClassOne({this.setFunction});
}

class ClassTwo {
    bool fieldOne;
}


testFunction<T>(T value){
    ClassTwo classtwoInstance = ClassTwo();
    ClassOne classOneInstance = ClassOne(setFunction: <bool>(bool arg) {
    classtwoInstance.fieldOne = arg; // Error A value of type 'bool' can't be assigned to a variable of type 'bool'
       return null;
    });
  
   return classOneInstance;
}


void main() {

ClassOne classWithFunction = testFunction<bool>(true);
   classWithFunction.setFunction(true);
}

question from:https://stackoverflow.com/questions/65883949/dart-a-value-of-type-bool-cant-be-assigned-to-a-variable-of-type-bool

Answer 1

Waitting for answers