benjaminmayo

struct ZipSparsePairsSequence<A: Sequence, B: Sequence> : Sequence {
    private var primary: A
    private var subset: B
    private let predicate: PairingPredicate
    
    fileprivate init(primary: A, subset: B, pairingWith predicate: @escaping PairingPredicate) {
        self.primary = primary
        self.subset = subset
        self.predicate = predicate
    }

benjaminmayo

import UIKit

class ViewController : UIViewController {
    // Monotonous view setup hidden. Imagine there's a button on screen that gets tapped and fires the action below.
    
    @IBAction func shareLinkButtonPressed(_ sender: Any) {
        let urlToShare = URL(string: "http://twitter.com/bzamayo")! // the base URL, in a real app this would be provided dynamically based on the current context 
        let sharingActivityItemProvider = LinkSharingActivityItemProvider(url: urlToShare) // make an activity item provider, defined below
        
        let activityViewController = UIActivityViewController(activityItems: [sharingActivityItemProvider], applicationActivities: nil)