mathonsunday

//
//  ViewController.m
//  LayerFun
//
//  Created by Veronica on 9/16/12.
//  Copyright (c) 2012 Veronica Ray. All rights reserved.
//

#import "ViewController.h"
#import <QuartzCore/QuartzCore.h>

mathonsunday

Programming Achievements: How to Level Up as a Developer

This gist is part of a blog post. Check it out at:

http://jasonrudolph.com/blog/2011/08/09/programming-achievements-how-to-level-up-as-a-developer

mathonsunday

num_test_cases = gets.chomp.to_i
each_num_of_cycles = []
height_after_n_cycles = {}

i = 0
while i < num_test_cases
  each_num_of_cycles.push(gets.chomp.to_i)
  i += 1
end

mathonsunday

puts "Hello World"

mathonsunday

public boolean groupNoAdj(int start, int[] nums, int target) {
  if(start >= nums.length) return (target == 0);
  if(start + 2 < nums.length) {
  if(groupNoAdj(start + 2, nums , target - nums[start]) == true) return true;
  }
  if(groupNoAdj(start + 1, nums, target) == true) return true;
  return false;
}

mathonsunday

var latestSession : SessionInfo = validSessions.reduce(validSessions[0], combine:  {$0.timestamp > $1.timestamp ? $0 : $1})

mathonsunday

    var viewController = ProfileViewController(musicServicer: MockMusicService())

    // invoke
    viewController.viewDidLoad()

    // verify
    XCTAssertTrue(mockMusicService.playCalled)
}

mathonsunday

First step is to desugar do notation. In this case we want to translate it to the bind (>>=) operator:

greeter =
    name >>= ask
    return ("hello, " ++ name ++ "!")
    
Now that it's desugared (not convinced I've done it correctly) I will translate it to Swift. 
I'm relying on the Reader monad implementation in Swiftz (https://github.com/typelift/Swiftz/blob/968075391aedb15ec51ff9d5b7d4921b8fa3a3c6/Swiftz/Reader.swift)
   
Current code is: 

mathonsunday

//: Playground - noun: a place where people can play


import Cocoa

import Foundation

// WinterBuddies a social network to connect you with people who can help you survive the winter
class ProfileViewController : UIViewController {
    let musicService = MusicService()

mathonsunday

// ProfileViewControllerTests.swift
func testShouldPlayMusicWhenViewDidLoad() {
    // setup mock
    class MockMusicService : MusicService {
        var musicPlayed = false
        override func play() {
            musicPlayed = true
        }
    }