How to remove an instance variable?

ruby-talk
1

So “@a” refers to (and creates if needed) an instance variable.

Is there some method to get rid of an instance variable (not just set to
nil)?

2

[Its Me itsme213@hotmail.com, 2004-03-08 19.54 CET]

So “@a” refers to (and creates if needed) an instance variable.

Is there some method to get rid of an instance variable (not just set to
nil)?

$ ri -T remove_instance_variable
---------------------------------------- Object#remove_instance_variable
obj.remove_instance_variable(symbol) => obj

··· 
 Removes the named instance variable from _obj_, returning that
 variable's value.

    class Dummy
      attr_reader :var
      def initialize
        @var = 99
      end
      def remove
        remove_instance_variable(:@var)
      end
    end
    d = Dummy.new
    d.var      #=> 99
    d.remove   #=> 99
    d.var      #=> nil
3

And can I somehow remove a variable?
Say it is a big array, whatever.
Say this object is defined in C…

Gergo

···

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4

“Gergely Kontra” kgergely@mcl.hu schrieb im Newsbeitrag
news:20040309152533.GH18404@mlabdial.hit.bme.hu…

And can I somehow remove a variable?
Say it is a big array, whatever.
Say this object is defined in C…

If you mean to say “force garbage collection of an instance” then I’d say,
you can’t. And you’re not supposed to either. :slight_smile: Ruby’s GC will take
care of that.

Kind regards

robert