Closures in iOS

Closures in iOS.swift

import Foundation

let label = UILabel()

func getRecentBlogPost(completion: NSURLResponse -> Void) {
    let session = NSURLSession(configuration: .defaultSessionConfiguration())
    let url = NSURL(string: "http://blog.teamtreehouse.com/api/get_recent_summary?count=20")!
    let request = NSURLRequest(URL: url)
    
    let dataTask = session.dataTaskWithRequest(request) { data, response, error in
        // Execute body of closure
        completion(response!)
    }
    
    dataTask.resume()
}

getRecentBlogPost() { response in
    print(response)
}