This is a Swift port of my Go program, Gorup. It randomly picks an item from a list.
swift-random-picker sausage steak hamburger
Pick an item between sausage, steak, and hamburger with equal probability.
swift-random-picker sausage -q1.1 steak -q 3 hamburger jerky
Pick an item between sausage, steak, hamburger, and jerky, with weighted probability of 1 : 1.1 : 3 : 1.