Mobile TAF 16th March

gistfile1.txt

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

import UIKit

var str = "Hello, playground"

var name : String? = "Achal"

var namex = name.map {  "\($0)" }

var hello = namex ?? ""

var you = name ?? "Vinsol"

you

var range = 1...3

//NSDictionary *dict = @{@"key" : @"value"}

//[@{} mutableCopy]

var dict = ["key":"value", "key2":"value2"]

var dict2: [String:Int] = [:]

var arr = ["hello"]

for key in dict.values {
    print(key)
}

[String](dict.keys)


dict.count
arr.count


for x in 1...4 {
//    print("My count is %d and the other count is %d", x, x)

print("My count is \(x) and the other count is \(x)")

}

var x:String? = "jell"

x! += "o"



for (var x = 0; x < 10; x++) {
    print(x)
}

var stringRange = "aa"..."an"



//func abc() -> () {
//    print("hello")
//}
//
//abc()

func abc() -> (x: String, y: String) {
    return ("hello", "world")
}

abc()
abc().x
abc().y

func abcd (a: String)(b: String) -> String {
    return a + b
}

abcd("hey")(b:" you!")

func swap(inout a:Int, inout b: Int) {
    let t = a
    a = b
    b = t
}

var a = 1
var b = 2

(a,b) = (b,a)

a
b


swap(&a, &b)

a
b