Can any开发者_Go百科one explain the difference between accessing an instance attribute via self.attribute and by @attribute?self.attribute calls the method attribute.
I want to force implementation of the singleton pattern on any of the extended classes of my parent class. That is, I only want one instance of every child cl开发者_Go百科ass to ever be around (access
I have got the following java class. When I am calling the login method in my constructor, I access the static instance variable username using the class name, and the static instance variable passwor
I\'ve just read SRP, as easy as 123…, and all of it resonates with me except one paragraph, in a section named \"Cohesion\" (I\'ve claimed before to \"get\" Cohesion, but this talk of parameters vs i
class Test def initialize @var = \"125\" end def testmethod puts @var puts \"accessing me from child class\"
How can refactor these methods so that they don\'t rely on using an instance variable (@conference_facets)?
In most of the iOS SDK tutorials I\'ve read online both from Apple and elsewhere, so many instance variables are made properties, even when they are only accessed from within their own class.
I want to replace this: self.fajerImage= [UIImage imageNamed:@\"FirstViewBG_5N.png\"]; self.shrogImage= [UIImage imageNamed:@\"FirstViewBG_4N.png\"];
How do I get the $str variable (below) into my class/classes?The function is used to call each class dynamically rather tan have \"lots\" of if(class_exists) statements.
Is it possible to define properties that are only available to the class they are defined in, and that class\'s subclasses?
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