Instance variable: self vs @
Here is some code: class Person def initialize(age) @age = age end def age @age end def age_difference_with(other_person) (self.age – other_person.age).abs end protected … Read more
instance-variables
Ruby class instance variable vs. class variable
I read https://stackoverflow.com/questions/826734/when-do-ruby-instance-variables-get-set but I’m of two minds when to use class instance variables. Class variables are shared by all objects of a … Read more
Should I instantiate instance variables on declaration or in the constructor?
Is there any advantage for either approach? Example 1: class A { B b = new B(); } Example 2: class A { … Read more
How do servlets work? Instantiation, sessions, shared variables and multithreading
Suppose, I have a webserver which holds numerous servlets. For information passing among those servlets I am setting session and instance variables. Now, … Read more
What is an instance variable in Java?
Instance variable is the variable declared inside a class, but outside a method: something like: class IronMan { /** These are all instance … Read more