ashalva

 class Node {
    var key : Int
    var left : Node?
    var right: Node?
    
    init(key: Int, left: Node?, right: Node?) {
        self.key = key
        self.left = left
        self.right = right

ashalva

import Foundation

func allPrimeFactors(number: Int) {
    var n = number
    while n % 2 == 0 {
        print("2")
        n /= 2
    }
    
    var i = 3

ashalva

func toLowerCase(string: String) -> String {
    var str = string as NSString
    for i in 0...(str.length - 1) {
        if str.character(at: i) >= 65 && str.character(at: i) <= 90 {
            let changeValue = str.character(at: i) + 32

            str = str.replacingCharacters(in: NSMakeRange(i, 1), with: String(Character(UnicodeScalar(changeValue)!))) as NSString
        }
    }
    return str as String

ashalva

//Duplicate
func returnDuplicates(arr: [Int]) -> [Int] {
    var dict: [Int: Bool] = [:]
    var duplicates: [Int] = []
    for i in arr {
        if dict.keys.contains(i) {
            duplicates.append(i)
        } else {
            dict[i] = true
        }

ashalva

class Node<T> {
    var value:T
    var next: Node?
    var previous: Node?
    
    init(value: T) {
        self.value = value
        self.next = nil
        self.previous = nil
    }

ashalva

class Tree {
    let value: Int
    var left: Tree?
    var right: Tree?
    
    init(_ v: Int) {
        self.value = v
    }
}

ashalva

class Node<T> {
    var value:T
    var next: Node?
    var previous: Node?
    
    init(value: T) {
        self.value = value
        self.next = nil
        self.previous = nil
    }

ashalva

import Foundation

enum Result<T> {
    case success(T)
    case failure(Error)
}

class Service: ServiceProtocol {
    func get(callback: @escaping ((Result<[MyObject]>) -> ())) {
        let url = URL(string: Links.baseUrl)!

ashalva

Add custom commands for iTerm + ZSH.

1. Create new file and name .my_custom_commands.sh
2. Add some functions e.g

function ios() {
  open -a "Xcode" ~/Documents/iOS/MyiOSProject.xcodeproj
}

ashalva

private func saveRandomContact() {
  let store = CNContactStore()
  let contact = CNMutableContact()
        
  // Name
  contact.givenName = UUID().uuidString
        
  // Phone
  contact.phoneNumbers.append(
    CNLabeledValue(