A D’oh Moment

I know this is something that most devs will not find interesting but it really made me smile when I stumbeld across using static members to count object instances. Like I’ve said I’m a noob and have jumped between technolgies so I decided this week to focus on learning the C# 3.5 Language from the ground up. I dug out my copy of Step by Step C# 2008 and decided to do a Chapter every time I needed a 5 min break from my Drudge (Smokers can have a Cigarette, why can’t coders have Dev Breaks??). After running though the variables, DataTypes etc I came across the classes and methods sections then got to the statics Which had the following little sample which I found very enlightening and though I’d share. It will also be for personal ref later.
using System;

namespace TheBasics
{
public class Circle
{
private int _radius;

public static int numCircles = 0;

public Circle()
{
_radius = 0;
numCircles++;
}

public Circle(int initialRadius)
{
_radius = initialRadius;
numCircles++;
}

public double Area()
{
return Math.PI*_radius*_radius;
}
}
}

So basically what this would allow you to do is Call the Static value numCircles which would have a count of all instances of the Circle Class. Simple I know bu t I liked it
Circle circle1 = new Circle();
Circle circle2 = new Circle();
Console.WriteLine("There are {0}, Circle objects",Circle.numCircles);

On A side note whilst creating This post I was struggeling to put nicley coloured and formatted code into the post. I found this and It worked a treat