The Strategy pattern
“I’m BORED!” Phoebe yelled across the room at her sister. Kitty had come up from Alpine to go over some spreadsheets with Lexi, the head of accounting for Bumble Bikes. Phoebe and Lexi had been friends for many years, so when Phoebe had the chance to recruit her, she took it. Lexi, who was used to Phoebe’s peculiarities, smiled at Kitty, folded her laptop, and said, “I’ll have this done for you tomorrow.”
As Lexi left the office, Phoebe flopped upside down on the couch, flipping through channels on the TV with the sound off. She wound up on channel 52,381, which was The Bike Channel. Bumble Bikes advertised heavily on this channel, and at that moment, a talking head was reviewing bike computers. A bike computer is an electronic device that reports your speed and distance traveled. Fancy models can keep track of your cadence, which is the pace at which you pedal. Some even track your heart rate and the electrical...