Private method access instance variable in Dart

In Dart, instance variables can only be accessed within the class they are defined in. Private methods and variables in Dart are denoted by prefixing the identifier name with an underscore (_). Therefore, to access an instance variable in a private method in Dart, you can simply use the variable name within the private method.

Here is an example code snippet demonstrating how to access an instance variable within a private method in Dart:

class Person {
  String _name;
  
  void _privateMethod() {
    print('My name is $_name');
  }
  
  void setName(String name) {
    _name = name;
    _privateMethod();
  }
}

In this example, the private method _privateMethod() accesses the private instance variable _name using the _name identifier within the method body. This method is called within the setName() public method, which sets the value of the _name variable and then calls _privateMethod() to print the value of the variable.

Note that you cannot access private variables or methods of another class, even if they are inherited by a child class.