C# casting to parent still running child methods

C# casting to parent still running child methods

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C# casting to parent still running child methods
Tag : chash , By : Florian D.
Date : September 15 2020, 12:00 AM

hop of those help? You basically can't (short of using tricks with reflection). That's how inheritance in C# works.
What you could do instead of overriding Run is to shadow it:
public class Parent
    public void Run() => Console.WriteLine("Parent");

public class Child : Parent
    public new void Run() => Console.WriteLine("Child");

var child = new Child();
child.Run(); // prints "Child"
((Parent)child).Run(); // prints "Parent"

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Java Android - Casting Parent to Child to Child

Tag : java , By : Michael
Date : March 29 2020, 07:55 AM
help you fix your problem unless the view are inflating is actually an ActivityMonitorItemView then you will get the exception. You must in your xml file, give the full name of your class. So instead of LinearLayout it would be like

Is casting Child to Parent fine?

Tag : java , By : Verbal
Date : March 29 2020, 07:55 AM
hope this fix your issue Yes. You can cast Child to a Parent since every Child is Parent. That's the beauty of OOP.

When chaining methods can the child method access and use the results of the 'parent' method? (i.e. Object.parent.child)

Tag : ruby-on-rails , By : akr
Date : March 29 2020, 07:55 AM
it helps some times I get what you're trying to do, almost like a command-line pipe operation. And, no, not possible with your approach (or, IMHO, recommended).
Consider the demo method:
def demo
def demo
  @group = @demo
class ReportItemArray < Array
  def add_money_to_net money
    item = find_item(money)
    if item
      item.net += money
      self << ReportItem.new(currency: money.currency.to_s, net: money)
  def add_money_to_gross money
    item = find_item(money)
    if item
      item.gross += money
      self << ReportItem.new(currency: money.currency.to_s, gross: money)
  def find_item money
    self.find {|s| s.currency == money.currency }
class Report
  def initialize
    @demo = ReportItemArray.new
    @live = ReportItemArray.new
  def live
  def demo

statically casting parent to child C++

Tag : cpp , By : jehammon
Date : March 29 2020, 07:55 AM
I hope this helps . I have a parent class and a child class which has a function specific to it that the parent class does not have. I create a vector of type Parent and add an object of type Child to it. I know for sure that said item is a child, so I attempt to use a static_cast to create a pointer to it in order to use its child specific function, but it refuses to convert giving the error described in the code below. ,
Why is this happening
int main()
    //I know for a fact that the item is a child
    std::vector<Parent> items;
    items.push_back(Child()); // <<<< You are copying and slicing here

    //Static cast to use child specific function doesn't work
    Child* childPtr = static_cast<Child*>(items[0]);
    childPtr->childSpecificFunction(); // <<<<< undefined behavior

    //Gives intellisence error: no suitable conversion from "Parent" to "Child *" exists
int main()
    std::vector<std::unique_ptr<Parent>> items;
    items.push_back(std::make_unique<Child>());  // <<< working with pointers,
                                                 //     no slicing.

    Child* childPtr = static_cast<Child*>(items[0].get());

InvalidCastException when casting from child to parent

Tag : chash , By : Matthew Steed
Date : March 29 2020, 07:55 AM
Any of those help Your IRepository<> interface needs to be covariant, via out in its generic declaration:
public interface IRepository<out T>{ ... }
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