I have a class and I try to access an instance variable and I noticed I can do it in both ways by addressing it with @ and without it. Why si there no error when I call it without a @ puts "name : #{name}"?
class Blabla
attr_accessor :name
def initialize(blabla)
@name = blabla
end
def populate()
puts "name : #{name}"
puts "name : #{@name}"
end
end
As hinted in the comments:
attr_accessor :name
is shorthand for:
def name
@name
end
def name=(name)
@name = name
end
So expanding your code we have:
class Blabla
def name
@name
end
def name=(name)
@name = name
end
def initialize(blabla)
@name = blabla
end
def populate()
puts "name : #{name}"
puts "name : #{@name}"
end
end
#{name} references the method name which returns @name.
#{@name} references @name directly.
Also be sure to understand attr_reader, attr_writer methods.
attr_accessor :nameattr_reader :nameI have the same, so is there any way I can avoid this behavior but still be able to read the instance variable?attr_accessor/attr_readerthere, again?