static-methods

I am developing a set of classes that implement a common interface . A consumer of my library shall expect each of these classes to implement a certain set of static functions. Is there anyway that I can decorate these class so that the compiler will catch the case where one of the functions is not implemented. I know it will eventually be caught when building the consuming code. And I also know how to get around this problem using a kind of factory class. Just curious to know if there is any syntax/attributes out there for requiring static functions on a class. Ed Removed the word 'interface'

I was told that static methods are implicitly final and therefore can't be overridden. Is that true? Can someone give a better example of overriding a static method? If static methods are just class methods, what is the real use of having them? (1) Static methods cannot be overridden, they can however be hidden using the 'new' keyword. Mostly overriding methods means you reference a base type and want to call a derived method. Since static's are part of the type and aren't subject to vtable lookups that doesn't make sense. E.g. statics cannot do: public class Foo { public virtual void Bar() {

Like many before me, I'm trying so get my derived types to automatically register with my factory. I read through many question and tried to focus on what I didn't find there. I've got everything running nicely except the automatic registration. My Goals: automatically register any derived class of my base class Base only classes I mark as registrable not only direct sub-classes of Base ex: Base -> Device -> Camera -> Webcam this would make using the CRTP like described in this question dificult minimal changes to the classes I want registered - dummies proof would prefer using a registrator

I have a problem that I haven't been able to find anywhere on the web (it may be there, but I can't find it, heh). I have a spreadsheet with 13 columns of data. Each of the column contains variations of a parameter that needs to go into an overall test case. All of them differ, like E: 101% 105% 110% 120% J: Upper S Upside L Downside B Premium V I have seen several solutions to the combination issue which uses nested loops. I'd like to steer clear of 13 nested loops (but this is my best bet at the moment). I'm kind of at a loss on how to generate every unique combination in in each column. I'm

Why does ReSharper complain when a method can become static, but is not? Is it because only one instance of a static method is created (on the type) and thus save on performance? I find that comment very useful as it points out two important things: It makes me ask myself if the method in question should actually be part of the type or not. Since it doesn't use any instance data, you should at least consider if it could be moved to its own type. Is it an integral part of the type, or is it really a general purpose utility method? If it does make sense to keep the method on the specific type,

I'm trying to convert the following Objective-C code to Swift. In my Objective-C code, there's a static variable and its accessed from a class method. @implementation SomeClass static NSMutableArray *_items; + (void)someMethod { [_items removeAll]; } @end Since you can't access types declared like this private var items = [AnyObject]() from class functions in Swift, I created a stored property for it like this. class var items: [AnyObject] { return [AnyObject]() } And I'm trying to call a method on it from a class function like so. class func someFunction() { items.removeAll(keepCapacity: