![flutter - Null Related Error - The argument type 'String? Function(String)' can't be assigned to the parameter type 'String? Function(String?)?' - Stack Overflow flutter - Null Related Error - The argument type 'String? Function(String)' can't be assigned to the parameter type 'String? Function(String?)?' - Stack Overflow](https://i.stack.imgur.com/JMYgl.png)
flutter - Null Related Error - The argument type 'String? Function(String)' can't be assigned to the parameter type 'String? Function(String?)?' - Stack Overflow
![flutter - Null Related Error - The argument type 'String? Function(String)' can't be assigned to the parameter type 'String? Function(String?)?' - Stack Overflow flutter - Null Related Error - The argument type 'String? Function(String)' can't be assigned to the parameter type 'String? Function(String?)?' - Stack Overflow](https://i.stack.imgur.com/Gco6Q.png)
flutter - Null Related Error - The argument type 'String? Function(String)' can't be assigned to the parameter type 'String? Function(String?)?' - Stack Overflow
![The semantics of typedef in dart. Have you ever come across a situation… | by Muhammad Waris | Embrace-It | Medium The semantics of typedef in dart. Have you ever come across a situation… | by Muhammad Waris | Embrace-It | Medium](https://miro.medium.com/v2/resize:fit:1400/1*LeJ_z2KH3kmrVX1bvy8ZKA.jpeg)
The semantics of typedef in dart. Have you ever come across a situation… | by Muhammad Waris | Embrace-It | Medium
![dart - Flutter: The argument type 'HomePage Function(BuildContext, Map<String, dynamic>)' can't be assigned to the parameter type - Stack Overflow dart - Flutter: The argument type 'HomePage Function(BuildContext, Map<String, dynamic>)' can't be assigned to the parameter type - Stack Overflow](https://i.stack.imgur.com/vikbm.png)