Pre1

precedencegroup RangePattern {
    associativity: left
    lowerThan: RangeFormationPrecedence
}
infix operator .. : RangePattern
extension Float {
    var samePrecision: Float  {
        return Float(description) ?? 0.0
    }
}

Pre1

// Check out the talk: https://talk.objc.io/episodes/S01E01-networking (Part 1)
// the talk uses swift 2 and I follow along by writing it in swift 3.

import Foundation
import PlaygroundSupport

//extension Sequence {
//    public func failingFlatMap<T>(_ transform: @noescape(Self.Iterator.Element) throws -> T?) rethrows -> [T]? {
//        var result: [T] = []
//        for element in self {

Pre1

/*
99 bottles of beer on the wall, 99 bottles of beer.
Take one down and pass it around, 98 bottles of beer on the wall.
.
.
.
1 bottle of beer on the wall, 1 bottle of beer.
Take one down and pass it around, no more bottles of beer on the wall.

No more bottles of beer on the wall, no more bottles of beer.