Let's say I'm using irb
, and type a = 5
. How do I remove the definition of a
so that typing a
returns a NameError
?
Some context: later I want to do this:
context = Proc.new{}.binding
context.eval 'a = 5'
context.eval 'undef a' # though this doesn't work.
There are remove_class_variable
, remove_instance_variable
and remove_const
methods but there is currently no equivalent for local variables.