a.rb

require 'timeout'
Timeout.timeout(1) do
  binding.pry
end

def moo
end

puts Object.public_instance_methods.grep(/moo/)
TOPLEVEL_BINDING.eval("def moo; end");
puts Object.public_instance_methods.grep(/moo/)
exit

class Foo
  def bar
  end
end

b = "b"
c = "{"
eval <<FOO, binding, __FILE__, __LINE__ + 1
  def a
    binding.pry
  end

  def #{b}
    binding.pry
  end

  def c
    [1,2,3].each #{c}
      puts 1;
    }
    binding.pry
  end
FOO

eval <<-FOO, binding, "mega.rb", __LINE__
  def d
    binding.pry
  end
FOO