swift trial

swift_trial.swift

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

import UIKit

var str = "Hello, playground"

var str2 = "Stinrg"
str2 = "Strign2"

let str3 = "String3"
//str3 = "strgin4"

var num = 2
var float = 2.5

var name:String = "Nanashima"
var age:Integer = 32

if name.isEmpty {
    name.isEmpty
}else{
    name = "Mr." + name
}

let array = [1,2,3,4]
array[2]

let dict = ["hoge":"duge", "hgae":"boke"]
dict["hoge"]

let job:String? = dict["hhhh"]
if let job2 = job {
    let message = "great!"
}else{
    let message = "NEET \(name)"
}

var taple = (32, "Nanashima")
taple.0
taple.1

switch taple {
case let(age, name) where age > 30:
    let message = "\(name) is 30 over"
case let(age, name):
    let message = "under 30"
    fallthrough
default:
    let message = "default"
}
num
while num < 10 {
    num++
}

for var i=0; i<5; i++ {
    num++
}

for i in 1..5 {
    num++
}

for i in 1...5 {
    num++
}

let names = ["taro", "jirou", "saburo"]
for name in names {
    name
}

let citDict = ["Japan":"Tokyo", "France":"Paris"]
for (country, city) in citDict {
    city
    country
}

func sum(first:Float, second:Int)->Float{
    return first + Float(second)
}

let price = sum(1.5, 2)

func hello<T>(x:T)->(String){
    return "Hello, \(x)"
}

hello("Swift");
hello(941);
hello(1.08)
hello([1,1,2,3,5,8,13]);
hello(["Swift":0]);

class Stone {
    
    var color:String{

    willSet{
        //some
    }
    didSet{
        //some
    }
    }
    let name:String? = nil
    
    init(color:String="white"){
        self.color = color
        self.name = "\(color)Stone"
    }

    func whoAmI()->String {
        return "This is \(self.name), and It's \(self.color)"
    }
    
    func getClassName() -> String {
        return "Stone"
    }
}

var blackStone = Stone(color:"black")
blackStone.whoAmI()

protocol humanProtocol {
    
    var name:String {get set}
    var age:Integer{get}
    func walk()
}

struct nanshima : humanProtocol{
    var name:String
    var age:Integer
    func walk(){
        //walk
    }
}

let frame = CGRectMake(0, 0, 300, 100)

let view = UIView(frame: CGRectMake(0, 0, 320, 568))
view.backgroundColor = UIColor.grayColor()
let label = UILabel(frame: frame)
label.text = "Hello playground"
view.addSubview(label)

let image = UIImage(contentsOfFile: "/Users/jollyjoester_pro/Desktop/[email protected]")
let imageView = UIImageView(image: image)

imageView.image
view.addSubview(imageView)

add willSet and didSet.