Pfthb

I get an error calling a void in onPressed/onTap

I'm trying to call a set state in an Inherited widget/state
following this instructions
https://medium.com/flutter-community/widget-state-buildcontext-inheritedwidget-898d671b7956

To my inexpert eyes looks like he is doing the same,
but clearly I missed something;
can you help me out?

 class InhCore extends InheritedWidget 
 InhCore(Key key, @required Widget child, @required this.data)
 : super(key: key, child: child);

 final InhState data;

 @override
 bool updateShouldNotify(InhCore oldWidget) 
 return true;
 


class InhWidget extends StatefulWidget 
 InhWidget(this.child);

 final Widget child;

 @override
 State<StatefulWidget> createState() => InhState();

 static InhState of(BuildContext context) 
 return (context.inheritFromWidgetOfExactType(InhCore) as InhCore).data;
 


class InhState extends State<InhWidget> 
 final Map<String, int> cardMap = 
 'A':1,
 '2':2,
 '3':3,
 '4':4,
 '5':5,
 '6':6,
 '7':7,
 '8':8,
 '9':9,
 '10':0,
 'J':0,
 'Q':0,
 'K':0
 ;

 List<String> cardDisplayed;

 void deal(String card) => setState(() => cardDisplayed.add(card));


 @override
 Widget build(BuildContext context) 
 return new InhCore(
 data: this,
 child: widget.child,
 );
 


class CardButton extends StatelessWidget 
 final String input;
 CardButton(this.input);

 Widget build(BuildContext context) 
 final InhState state = InhWidget.of(context);
 return Container(
 width: 55.0,
 height: 55.0,
 child: Material(
 color: Colors.grey[200],
 child: InkWell(
 onTap: state.deal(input),
 child: Center (
 child:Text(input),
 ),
 ),
 ),
 );
 

thanks in advance for the help

You missed () =>

onPressed: () => state.deal(input)

Your code passes the result of the call state.deal(input) to onPressed, while above code passes a function that when called invokes state.deal(input)