C#

"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar

Coming soon: The Second EuroCPian Event

MyClass.MyStaticMethod();

public class MyClass
{
  private static object syncRoot = new object();
  public MyClass()
  {
    if (theInstance == null)
      lock (syncRoot)
        if (theInstance == null)
          theInstance = this;
  }
  private static MyClass theInstance;
  public static MyClass TheInstance
  {
    get { return theInstance; }
  }
}

public string Digest(string value)
{
  if (value == null) throw new ArgumentNullException("value");
  byte[] buffer = Encoding.Unicode.GetBytes(value); // Or whatever encoding
  MD5 md5 = MD5.Create();
  byte[] hash = md5.ComputeHash(buffer);
  return ConvertToHex(hash);
}
public string ConvertToHex(byte[] buffer)
{
  if (buffer == null) throw new ArgumentNullException();
  StringBuilder sb = new StringBuilder();
  for (int i = 0; i < buffer.Length; i++)
    sb.AppendFormat("{0:X2}", buffer[i]);
  return sb.ToString();
}