erica

struct PrimeGenerator : Generator {
    typealias Element = Int

    private var myPrimes = [Int]() // store previous primes
    var current : Int = 2 // first prime is 2
    mutating func next() -> Int? {
        if myPrimes.count == 0 {myPrimes = [2]; return 2}
        NextNumber: while (current++ > 0) {
            for prime in myPrimes {
                // If a number has a prime factor it is not prime

erica

// This should have worked. It doesn't work.
// Out of range error because the String.Index is set with regard to the smallest string at match

//extension String {
//
//   func findIndexOf(substring : String) -> String.Index? {
//        if countElements(self) < countElements(substring) {return nil}
//        if countElements(substring) == 0 {return nil}
//        if self.hasPrefix(substring) {return self.startIndex}
//        if let recursionResults = dropFirst(self).findIndexOf(substring) {

erica

 extension Array {
    func takeWhile(processingClosure : Element->Bool) -> [Element] {
        if (self.count == 0) {return []}
        let car : Element = self.first!
        if processingClosure(car) {
            let cdr : [Element] = Array(self[self.startIndex.successor()..<self.endIndex])
            return [car] + cdr.takeWhile(processingClosure)
        } else {
            return []
        }

erica

Testing iPhone 6 plus
iPhone Simulator
iPhone OS
8.0
iPhone Simulator
<UIView: 0x7f854596f7a0; frame = (0 0; 414 736); autoresize = W+H; layer = <CALayer: 0x7f854596bd50>>
<UIWindow: 0x7f854596e1e0; frame = (0 0; 414 736); gestureRecognizers = <NSArray: 0x7f854596edd0>; layer = <UIWindowLayer: 0x7f854596c0d0>>

Testing iPhone 6
iPhone Simulator

erica

import Foundation

func QLString(x : QuickLookObject) -> String {
    switch x {
    case .Text(let s) : return "[Text] " + s
    case .Int(let i) : return "[Int] " + "\(i)"
    case .UInt(let u) : return "[UInt] " + "\(u)"
    case .Float(let f) : return "[Float] " + "\(f)"
    case .Image(let img) : return "[Image] " + "[image]"
    case .Sound(let snd) : return "[Sound] " + "[sound]"

erica

postfix operator ⟹ {}
postfix func ⟹ <T:_ObjectiveCBridgeable>(obj : T) -> AnyObject { return _bridgeToObjectiveC(obj)! }
var s = "23.692"
NSString(string:s).doubleValue
s⟹.doubleValue

erica

// MARK: Mirror-based Utilities
// These work across arrays, structures, tuples
// Goatees are mandatory

func mirrorDo<S>(structure:S, closure:(Int, String, Any)->()) {
    let mirror = reflect(structure)
    for index in 0 ..< mirror.count {
        closure(index, mirror[index].0, mirror[index].1.value)
    }
}

erica

public extension UIBezierPath {
    public var dashPhase : CGFloat? {
        get {
            // Only defined if dashes are defined
            if dashes.count == 0 {return nil}
            var phase = UnsafeMutablePointer<CGFloat>.alloc(1)
            getLineDash(nil, count: nil, phase: phase)
            let result = phase.memory; free(phase)
            return result
        }

erica

    var interpolatedPathPoints : [CGPoint] {
        let numberOfBezierSamples = 6
        var results = [CGPoint]()
        var current : BezierElement? = nil
        for element in elements {
            switch element.elementType.value {
            case kCGPathElementMoveToPoint.value:
                if let point = element.point {results += [point]; current = element}
                break;
            case kCGPathElementAddLineToPoint.value:

erica

//
//  LaunchAtLoginHelper.swift
//
//  Created by Erica Sadun on 4/1/15.
//  Copyright (c) 2015 Erica Sadun. All rights reserved.
//

import Foundation

public func getLoginItems() -> LSSharedFileList? {