Author: Ravi Shankar
UIGestureRecognizer in Swift
In this short tutorial, we will see the steps required for implementing UIGestureRecognizer in Swift programming language. Let us take the previous Stop Watch demo code and implement tap, double tap and swipe gestures. You can download source code for Stop Watch from here. The following features will be implemented using the UIGestureRecognizer. Tap –…
Simple StopWatch app in Swift
In this tutorial, we will see the steps for creating simple StopWatch app in Swift Programming language as shown in the below screenshot. Click File menu -> New -> select Project from menu list. Choose the template as Single View Application and click Next button. Enter name of the Product, Language as Swift then click…
How to rename project in Xcode
Xcode provides users with the option to rename the project. You can do this in Xcode 6 and Xcode 5 by following the below mentioned steps. Navigate to Project Navigator, select the Project. After entering the new name for the Project, press Return on the Keyboard. In this example, I am changing the name of…
Insertion Sort
Insertion Sort algorithm does the following Keeps the sorted numbers from left to right. Compares the left with right and interchanges the number if left is greater than right. Here is code snippet of Insertion Sort in Swift. [code language=”swift”]var inputArr:[Int] = [Int]() // generate random numbers for rIndex in 0..<10 { inputArr.append(((Int(arc4random()) % 100)))…
Reverse a String in Swift
Here is a simple code snippet written in Swift programming language for reversing a string. import Cocoa //Assigning a value to a String variable var str = “Hello, playground” //Create empty character Array. var strArray:Character[] = Character[]() //Loop through each character in the String for character in str { //Insert the character in the Array…
No such module Cocoa
No such module Cocoa error message is displayed when the type of playground file selected is iOS instead of OS X. Make sure to select Playground under OS X if you want to use Cocoa framework and go for UIKit incase of iOS Another alternate way is to change the template using the Playground Settings.…
Selection Sort
Selection Sort algorithm does the same amount of comparison( N*(N-1)/2 ) like bubble sort but the number swaps (N) is reduced drastically. This sort algorithm traverse through all the items, picks the smallest number and swaps it with left most item. Then the step is repeated for the next smallest number until it reaches the…
How to change system locale in Windows 8 and Windows 7
Windows 8.1 and Windows 7 system locale can be changed using the Change System Locale options available under Control Panel. Change system locale in Windows 8.1 Launch Control Panel on Windows 8.1 and Select Clock, Language and Region option. Click Change location under link under Region section In the Region dialog, click the Change system…