REPL

Who needs an IDE when you have a REPL?

Okay, so maybe I still like IDE’s, but if you catch yourself writing too much code before you try any of it, maybe you need to set up a REPL environment. I like writing code with unit tests because then it doesn’t have to reach critical mass, with sixteen cylinders all firing at once, before I see positive results for my effort.

Pachelbel Rocks

This video is quite impressive—a must-see if you like both classical and rock.

has_many :through trick

Save yourself some time. When using has_many :through, first declare a normal has_many relationship with the rich join table. Otherwise, you’ll be pondering the meaning of life, the universe and HasManyThroughAssociationNotFoundError.