What are the ways to set the eval context?

Question

ruby

class User

  def method
    var = "puts(@another_var)" 
    @another_var = 11
    eval(var)
  end
end

It is desirable that it would be possible to directly interact with the instance, without passing an entire copy of the object to the lambda (the first thing that came to mind)

Answer 1

instance_eval(string [, filename [, lineno]] ) → obj
instance_eval {| | block } → obj

some_object.instance_eval do
    instance_method(10)
end
some_object.instance_eval('instance_method(10)')