Injecting an value into a binding

inject_this.rb

# Is there a better way to inject an arbitrary value into a binding?

def inject_this_as_reference(block, this_object)
  eval("lambda {|v| @this = v}", block.binding).call(this_object)
end

def inject_this_as_method(block, this_object)
  (class << eval('self', block.binding);self;end).send(:define_method, :this) {this_object}
end

fn = lambda { "this is #{@this}"}
inject_this_as_reference fn, "Radical!" #=> This is Radical!
puts fn.call()

fn = lambda { "this is #{this}"}
inject_this_as_method fn, "Awesome!" #=> This is Awesome!
puts fn.call()