Steps to use Legacy Swift in Xcode 8

Xcode Swift iOS10

Xcode 8.0 is released with Swift 3 and Swift 2.3 compatibility.


If you already having a project with Swift 2.2 language support with Xcode 7.3.1 and you open the project in Xcode 8.0 then, you will be prompted for the migration assistant to do a migration pass. The assistant can also be invoked manually from the menu Edit -> Convert -> To Current Swift Syntaxโ€ฆ

  • Use Swift 2.3 Modifies your project to enable the Use Legacy Swift build setting and provides source changes to be able to build against the new SDKs.
  • Use Swift 3 This is recommended. You will get source changes to be able to build your project using Swift 3 and take advantage of all the new features in Xcode 8.0.

If you want to work with new project and you want to work with Legacy code (Swift 2.3) or 3.0 then you can do settings from build settings as follows :

Build Settings - Swift Legacy Code
Build Settings – Swift Legacy Code

Default Setting is No (Swift 3). But if you want to do legacy code (Swift 2.3) then you have to select Yes (Swift 2.3).

Make sure you do this setting by starting of new project because many methods will change.

For Example :

Swift 3 Code

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    return true
}

Swift 2.3 Code

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool {
    return true
}

As per my opinion Swift 3 is recommended.

Happy Coding ๐Ÿ™‚

Bye Bye to NS from Swift!!

Logo NeXTSTEP
Logo NeXTSTEP

Many of the types are bridged to the Swift type like as (e.g., NSString being bridged to String).

Other Objective-C types are bridged to Swift are as follows :

Objective-C Swift
NSString String
NSArray Array
NSDictionary Dictionary
NSData Data
NSError Error (Added Swift 3 – Xcode 8 Beta 4)
NSNotificationCenter NotificationCenter

And more…

Bye Bye to NS from Swift!!

Happy Coding ๐Ÿ™‚

Best Tweets of iOS 10 & Swift 3 Updates

Get Reactions from Timeline Post via Facebook Graph API – Swift – iOS

Facebook Reactions
Facebook Reactions

New version of SDK is 4.16.x(Swift) and Graph API Version is 2.8.

With the Graph API 2.6 Facebook has given support to fetch (read only) the Reactions on Timeline Posts.

Post is updated for iOS 10 and Swift 3

API documentation is available here.

Let’s learn how to get reactions from the post

Install pods

Login with Facebook

I have already written a tutorial on Facebook Login.

Get Facebook Posts via Graph API

We can get the Facebook post via graph API : /me/posts for that we have to add user_posts permission with login.

Get Reactions from one of the Post

We can get the Facebook post reactions via graph API : /{post-id}/reactions. We have to pass parameters like fields and summary as described in getReactions function.

Note : Here I am writing sample for only first post.

Response should be like

Type of reactions : NONE, LIKE, LOVE, WOW, HAHA, SAD, ANGRY

#Like #Share #React ๐Ÿ™‚ ๐Ÿ˜› ๐Ÿ˜€

Happy coding ๐Ÿ™‚

Use of Operator Overloading with Swift

apple_swift_logo

I was just going through the Swift document and I found that Swift allow to overload the operator just like as C++ Language. Objective-C doesn’t allow to overload the operator.

As swift document we can also say “Operator Functions”.

Let’s Overload ^ (XOR Operator) to make Power of the value

Function Prototype :

Declare function prototype with left hand side value and right and side value.

Operations in the function :

To make the power of the value we have to apply following operations

Let’s try to use with the operator :

Happy Coding ๐Ÿ™‚