class method การใช้

• :: That's not a class method, because a module isn't a class.
• This third class method is drastically different from the previous two algorithms listed.
• The same is true for inner's class methods that references a function's variables.
• Class methods also have no access to instance variables.
• Class methods actually belong to the metaclass, just as instance methods actually belong to the class.
• Also, some classes implement class method initializers.
• Because different classes can have different sets of class methods, each class must have its own separate metaclass.
• Some class method initializers take parameters:
• The first argument to a class method is the class object instead of the self-reference to the instance.
• Python allows the creation of class methods and static method via the use of the @ classmethod and @ staticmethod decorators.
• Single parameter type classes are supported, with superclasses, derived instances, deriving clauses for common classes, default class methods and higher-kinded type variables.
• The reason for this is that all metaclasses inherit from root class; hence, they must inherit the class methods of the root class.
• It is a type of methods ( " member functions " ) as well; a class may have both instance methods and class methods.
• It is a special type of methods ( " member functions " ) as well; a class may have both instance methods and class methods.
• Also, while in general terms common class method and constructor overloading is not considered polymorphism, there are more uniform languages in which classes are regular objects.
• Calling class methods also makes use of the colon : object : func ( args ) is equivalent to object . func ( object, args ).
• The basic middle-class method _ the less-than-elegant inside-out maneuver with a Publix bag _ lacks the proper panache one is expected to display on the gilded isle.
• Like Smalltalk, in Objective-C, class methods are simply methods called on the class object, hence a class's class methods must be defined as instance methods in its metaclass.
• Like Smalltalk, in Objective-C, class methods are simply methods called on the class object, hence a class's class methods must be defined as instance methods in its metaclass.
• The operation could also be defined as a class method, replacing lhs by the hidden this argument; however this forces the left operand to be of type Time: