Рихтер и его Applied .Net Framework Programming
		Date: 12/05/05 
		(Code WTF)    Keywords: no keywords
[Flags]
public enum Accounts {
    Savings   = 0x0001,
    Checking  = 0x0002,
    Brokerage = 0x0004
}
//	Definition of a class with Accounts accounts member skiped.
//      Check if two class objects match:
if ((other.accounts & accounts) != accounts) return false;
Source: http://community.livejournal.com/code_wtf/20130.html