Partial application that works on all Ruby implementations

gistfile1.txt

class Object
  def _(name, *partial_args)
    Proc.new do |*new_args|
      send name, *partial_args.map {|arg| arg == :_ ? new_args.shift : arg}
    end
  end
end

# Practical examples:
[1,2,3].each &_(:puts, :_)
#=> 1\n2\n3\n

[:send, :puts].select &'foo'._(:respond_to?, :_, false)
#=> [:send]