C#

Image img = Image.FromFile(@"c:\logo.png");
Bitmap buffer = new Bitmap(img.Width, img.Height);
buffer.SetResolution(img.HorizontalResolution, img.VerticalResolution);
buffer.Save(@"c:\logo2.png");

Lev Danielyan wrote:

I actually wonder what is this for

private Child() { }
public static Child MySlightlyHiddenCreateChildMethod() {
    return new Child();
}

N a v a n e e t h wrote:

But the constructor is private and no one can instantiate it from outside of child.

Dragonfly_Lee wrote:

And the static method is not thread safe inherently.

S. Senthil Kumar wrote:

Dragonfly_Lee wrote:
And the static method is not thread safe inherently.


Why? All he does is return an instance of a class.

public class CheeseFactory
{
	public Cheese MakeCheese()
	{
		return new RealCheese();
	}

	private class RealCheese : Cheese
	{
		// Your secret internal cheese functionality here (if necessary)
	}

	public abstract class Cheese
	{
		// Your Cheese-implementation Here
	}
}

public static class Parent
{
    private static Child[] children = CreateChildren();
    public static Child GetChild(int id)
    {
        return children[id]; ;
    }
    private static Child[] CreateChildren()
    {
        Child[] result = new Child[1];
        result[0] = new RealChild("Dave");
        return result;
    }

    private class RealChild : Child
    {
        public RealChild(string name)
        {
            Name = name;
        }
    }
    public abstract class Child
    {
        private string m_Name;
        public string Name
        {
            get { return m_Name; }
            protected set { m_Name = value; }
        }
    }
}