NO DROIDS ALLOWED: Like the Mos Eisley Cantina, Apple's App Store doesn't take kindly to droids. Just ask Treehouse, one of the many "learn to code" startups, which recently launched an iPad app that offers lessons for a variety of programming languages--except for Android content. According to Tech Cocktail, Treehouse founder and CEO Ryan Carson said the company was warned by Apple that teaching Android development would break App Store guidelines by "promoting a competing platform." Hey, welcome to the walled garden.
