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Questions - instance-variables

Why do I not need the extra lines of code? Ruby Codeacademy

I'm working on Learn Ruby in Codeacademy (OBJECT-ORIENTED PROGRAMMING II: Private! Keep out!). Why don't I need to include '(id_name)' after the 'def id' method for the final section? My attempt is de...
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user220150

ruby

private

instance-variables

Votes: 0

Answers: 1

Latest Answer

Why don't I need to include '(id_name)' after the 'def id' method for the final section? I assume you mean (id_number) – that's what we call a method argument. Based on the proposed solution: def id...
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Stefan

Python accessing parent class variable as instant variable in child class

I'm trying to access instance variables of a parent class as class variables in a child class. The purpose is that the parent class will have a lot of child classes which all need to have the same str...
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Knoerifast

python

python-3.x

inheritance

instance-variables

class-variables

Votes: 0

Answers: 1

Latest Answer

So, you need to actually implement the property. class Human(ABC): def __new__(cls, *args, **kwargs): cls.human_name = args[0] cls.source = f'database_{cls.__name__}'.lower() ...
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juanpa.arrivillaga

python instance variables initialization code smell?

In the two self.load_file() methods below, the first one has no arguments and uses the instance variables self.a and self.b, and the second one uses a and b directly as input arguments, and load_file ...
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des224

python

class

oop

instance-variables

Votes: 0

Answers: 2

Latest Answer

as already written, this is matter of experience and personal taste, but if you, let say you have a UtilityClass, which encapsulates this specific function(s) you will be better off, if you need to ch...
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baskettaz

Ruby instance variables problem using '==' in if condition

I am creating a Account which should display,withdraw the balance only when the correct is passed as parameter.I am facing a issue in which on passing the correct pin, the balance is not shown instead...
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Yashveer Nathawat

ruby

conditional-statements

instance-variables

Votes: 0

Answers: 2

Latest Answer

The only place where @pin is assigned is in pin. But pin never gets called, thus @pin never gets assigned. In Ruby, un-initialized instance variables evaluate to nil, so @pin will always evaluate to n...
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Jörg W Mittag

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