For me it seems completely reasonable since you can use extensions to expose different parts of logic to different extensions. This can also be used to make class conformance to protocols more readable, for instance class ViewController: UIViewController { … } extension ViewController: UITableViewDelegate { … } extension ViewController: UITableViewDataSource { … } extension ViewController: … Read more
Edit: This question was answered in 2016 and is kind of outdated. Look at @Nenad up-to-date answer below. Solution from typescript interfaces reference: interface ClockConstructor { new (hour: number, minute: number): ClockInterface; } interface ClockInterface { tick(); } function createClock(ctor: ClockConstructor, hour: number, minute: number): ClockInterface { return new ctor(hour, minute); } class DigitalClock implements … Read more
You absolutely can use is in a switch block. See “Type Casting for Any and AnyObject” in the Swift Programming Language (though it’s not limited to Any of course). They have an extensive example: for thing in things { switch thing { case 0 as Int: println(“zero as an Int”) case 0 as Double: println(“zero … Read more
You could consider using a class attribute to provide a counter. Each instance needs only to ask for the next value. They each get something unique. Eg: from itertools import count class Obj(object): _ids = count(0) def __init__(self): self.id = next(self._ids)
You can use setattr (be careful though: not every string is a valid attribute name!): >>> class AllMyFields: … def __init__(self, dictionary): … for k, v in dictionary.items(): … setattr(self, k, v) … >>> o = AllMyFields({‘a’: 1, ‘b’: 2}) >>> o.a 1 Edit: let me explain the difference between the above code and SilentGhost’s … Read more
I wouldn’t bother trying to merge your Constants class with this class. It isn’t worth the effort. Just create a new class that does what is necessary for ACRA. Like this: public class MyApplication extends Application { @Override public void onCreate() { super.onCreate(); // do the ACRA init here } } Now you need to … Read more
Like many modern languages, VB6 has value types and reference types. Classes define reference types. On the other hand, your basic types like Integer are value types. The basic difference is in assignment: Dim a as Integer Dim b as Integer a = 2 b = a a = 1 The result is that a … Read more
Here’s some supplemental information that may help better understand several of the other shorter, although technically correct, answers. In the strictest sense a Class Factory is a function or method that creates or selects a class and returns it, based on some condition determined from input parameters or global context. This is required when the … Read more
To be clearer, I make an example here, class ClassA { class func func1() -> String { return “func1” } static func func2() -> String { return “func2” } /* same as above final class func func2() -> String { return “func2” } */ } static func is same as final class func Because it … Read more
Fortran does not have templates, but you can put the code common to the functions handling different types in an include file as a kludge to simulate templates, as shown in this code: ! file “cumul.inc” ! function cumul(xx) result(yy) ! return in yy(:) the cumulative sum of xx(:) ! type, intent(in) :: xx(:) ! … Read more