Recommend the now out-of-print book Metaprogramming Ruby to grant insight into the hows and whys of metaprogramming. Also serves as a decent intro to Ruby for i

Recommend the now out-of-print book Metaprogramming Ruby to grant insight into the hows and whys of metaprogramming. Also serves as a decent intro to Ruby for intermediate coders. Criminal that you have to buy it on the secondary market now.