suyenish

import UIKit

//func formula
/*
func funcName(input variable and type) -> outputType {
 ...some code...
}
*/
func greet(person: String) -> String {
    let greeting = "Hello, " + person + "!"

suyenish

import UIKit
// for in
//for i in 0...50{
//    // if
//    if i == 3{
//        break
//    }
//    print(i)
//}

suyenish

import UIKit

var date : String? // ? automatically makes date nil
date = "03.12.2021"
/*
// some correct ways to show optionals
if date != nil {
    print("date is \(date)")
} else {
    print("not found")

suyenish

import UIKit

//let tuple1 : (Int, String, Double, Bool) = (1 , "Daulet" , 20.4, true)
let correctTuple = (6 , "Daulet" , 20.3, true)

let(favNumber, name, age, futureProgrammer) = correctTuple

favNumber
name
age

suyenish

import UIKit

//let dict1 : [Int : String] = [0 : "mother", 1 : "father", 2 : "me"]

//let dict2 : Dictionary<String, Double> = ["father" : 44.0, "mather" : 41.0, "me" : 20.0]

let dict1 = [0 : "father", 1 : "mother", 2 : "me"]
dict1[0]

let family = ["father" : "Yermek", "mother" : "Raushan", "me" : "Daulet"]

suyenish

import UIKit
//Practicing arrays
let constArray : [String]  = ["a" , "b" , "c"]
constArray.count

var array1 = [String]()

array1.count == 0  ? print("is empty") : print("not empty")

array1 += constArray

suyenish

import UIKit

var str1 = "WANTED"
var str2 = ""
var str3 = String()

str2 = "John" 
str3 = "Wick"
print(str2 + " " + str3)

suyenish

import UIKit

var x = 20

let const = 7

var x1 : Int = 13

var x2 : Double = 6.2

suyenish

import UIKit

var greeting = "Hello, playground"

var myAge = 19

myAge = 20

var surname = "Suienish"