Sorted:

How do I get my netbeans drag and drop widget to know whether it is rendering inside the netbeans design view window or the running application?-Collection of common programming errors

What's the purpose of META-INF?-Collection of common programming errors

How can I call a generic method on an injected class without informing the parent class of the generic type?-Collection of common programming errors

problem about nswindow-Collection of common programming errors

problem about tframe-Collection of common programming errors

Work around for being unable to make function templates virtual?-Collection of common programming errors

Using Haskell's types to replace assert statements or if checks in other languages-Collection of common programming errors

problem about duck-typing-Collection of common programming errors

Using Reflection.Emit to copy a custom attribute to another method-Collection of common programming errors

Objective C – Weak reference to super class?-Collection of common programming errors