kanetai

#!/usr/bin/swift
import Foundation

public enum ESCCode : UInt {
    case Reset = 0, Bold = 1, Faint, UnderLine = 4, BlinkSlow, Negative = 7
    case Black = 30, Red, Green, Yellow, Blue, Magenda, Cyan, White
    case BackgroundBlack = 40, BackgroundRed, BackgroundGreen, BackgroundYellow, BackgroundBlue, BackgroundMagenda, BackgroundCyan, BackgroundWhite
    
    static let backGroundColorOffset: UInt = 10
    static func escapeCode(value: UInt) -> String { return "\u{1b}[\(value)m" }

kanetai

def lowerBound(a, key)
    lb = -1; ub = a.length
    while ub - lb > 1
        mid = (lb + ub) / 2
        if a[mid] >= key
            ub = mid
        else
            lb = mid
        end
    end

kanetai

typealias Point = (x: Int, y: Int)
func ==(lhs: Point, rhs: Point) -> Bool { return lhs.x == rhs.x && lhs.y == rhs.y }
func !=(lhs: Point, rhs: Point) -> Bool { return !(lhs == rhs) }
func +(lhs: Point, rhs: Point) -> Point { return Point(lhs.x + rhs.x, lhs.y + rhs.y) }
func +=(inout lhs: Point, rhs: Point) { lhs.x += rhs.x; lhs.y += rhs.y }
func -(lhs: Point, rhs: Point) -> Point { return Point(lhs.x - rhs.x, lhs.y - rhs.y) }
func -=(inout lhs: Point, rhs: Point) { lhs.x -= rhs.x; lhs.y -= rhs.y }
let neighborhood8: [Point] = [
    (0, -1), (1, -1), (1, 0), (1, 1), (0, 1), (-1, 1), (-1, 0), (-1, -1)
]

kanetai

extension Character {
    var ord: UInt32 {
        let u = String(self).unicodeScalars
        return u[u.startIndex].value
    }
    var isDigit: Bool { return "0"..."9" ~= self }
    var isAlpha: Bool { return "a"..."z" ~= self || "A"..."Z" ~= self }
}

kanetai

//Apple Swift version 2.1.1 (swiftlang-700.1.101.15 clang-700.1.81)
extension String: CollectionType {
    func at(idx: Int) -> Character {
        return self[self.startIndex.advancedBy(idx)]
    }
    func subString(s: Int, _ e: Int) -> String {
        return self[self.startIndex.advancedBy(s)..<self.startIndex.advancedBy(e)]
    }
}