nathanhillyer

#####
# Xcode private settings (window sizes, bookmarks, breakpoints, custom executables, smart groups)
#
# This is complicated:
#
# SOMETIMES you need to put this file in version control.
# Apple designed it poorly - if you use "custom executables", they are
#  saved in this file.
# 99% of projects do NOT use those, so they do NOT want to version control this file.
#  ..but if you're in the 1%, comment out the line "*.pbxuser"

nathanhillyer

class ProjectManager {

	func increaseProductivity(developer: Developer) {

		guard let name = person.name else {
			print("This person doesn't have a name, did his identity get stolen?")
			return
		}

		slackMessage.text = "\(name) is a great iOS Developer!")

nathanhillyer

import Foundation

/**
Executes the closure on the main queue after a set amount of seconds.

- parameter delay:   Delay in seconds
- parameter closure: Code to execute after delay
*/
func delayOnMainQueue(delay: Double, closure: ()->()) {
	dispatch_after(dispatch_time(DISPATCH_TIME_NOW, Int64(delay * Double(NSEC_PER_SEC))), dispatch_get_main_queue(), closure)

nathanhillyer

[self loginViaHttpWithRequest:request completionBlockWithSuccess:^(LoginOperation *operation, id responseObject) {
  [self showMainScreen];
} failure:^(LoginOperation *operation, NSError *error) {
  [self showFailedLogin];
}];

nathanhillyer

loginViaHttp(request) { response in
  if response.success {
    showMainScreen()
  } else {
    showFailedLogin()
  }
}

nathanhillyer

// The return value of this function is () -> Int
// This means we are returning a function that returns an Int
func makeIncrementer(forIncrement amount: Int) -> () -> Int {
	var runningTotal = 0
	
	// Nested function that uses the runningTotal variable
	func incrementer() -> Int {
		runningTotal += amount
		return runningTotal
	}

nathanhillyer

func reverseAndRepeatString(stringToReverse: String, numberOfReverses: Int) -> String {
	let reverseString: () -> String = { transformString(stringToReverse, transformation: { String($0.characters.reverse()) }) }
	let repeatString: (() -> String) -> String = {
		var repeated = ""
		for _ in 1...numberOfReverses {
			repeated += $0()
		}
		return repeated
	}

nathanhillyer

func reverseAndRepeatString(stringToReverse: String, numberOfReverses: Int) -> String {
	let reversed = transformString(stringToReverse, transformation: { String($0.characters.reverse()) })
	return transformString(reversed, transformation: {
		var repeated = ""
		for _ in 1...numberOfReverses {
			repeated += $0
		}
		return repeated
	})
}

nathanhillyer

func reverseAndRepeatString(stringToReverse: String, numberOfReverses: Int) {
	transformString(stringToReverse, transformation: { (stringToTransform) -> String in
		let reversedString = String(stringToTransform.characters.reverse())
		var reversed = ""
		for _ in 1...numberOfReverses {
			reversed += reversedString
		}
		return reversed
	})
}

nathanhillyer

func transformString(stringToTransform: String, transformation: (String) -> String) -> String {
  return transformation(stringToTranform)
}