FAQ: Object-Oriented Programming I - Naming Your Variables


This community-built FAQ covers the “Naming Your Variables” exercise from the lesson “Object-Oriented Programming I”.

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When I add $ before my_variable within the class

class MyClass
	$my_variable = "Hello!"
puts my_variable

it gives an error:

undefined local variable or method `my_variable’ for Context:0xfdfd68

In the hint is says it should work.


I think I got it. $ should be added not only at the moment of declaration; it is a part of the variable name and should be used each time:

class MyClass
	$my_variable = "Hello!"
puts $my_variable