This breakpoint provides an easy way to track view controller deinitialization (deallocation) in UIKit-based applications. This can help finding memory leaks caused by retain cycles preventing view controllers from being deinitialized when dismissed or popped.
From Cédric Luthi's tweet in 2017:
Useful Xcode breakpoint. When you dismiss a controller and you don’t hear the pop sound (or see the log), you probably have a retain cycle.
| import Foundation | |
| import CoreGraphics | |
| /* | |
| Usage: | |
| Interpolate(.linear).between(x, and: y, progress: progress) // progress is 0 to 1 | |
| */ |
| // | |
| // Created by はるふ on 2017/12/11. | |
| // Copyright © 2017年 ha1f. All rights reserved. | |
| // | |
| import Foundation | |
| import CoreImage | |
| import AVFoundation | |
| extension CIFilter { |
| import UIKit | |
| final class PagingCollectionView: UICollectionView, UICollectionViewDelegate { | |
| private weak var externalDelegate: UICollectionViewDelegate? | |
| override var delegate: UICollectionViewDelegate? { | |
| get { return externalDelegate } | |
| set { | |
| externalDelegate = newValue | |
| let currentDelegate = super.delegate |
| #!/bin/bash | |
| # This script automatically sets the version and short version string of | |
| # an Xcode project from the Git repository containing the project. | |
| # | |
| # To use this script in Xcode, add the script's path to a "Run Script" build | |
| # phase for your application target. | |
| set -o errexit | |
| set -o nounset |
| /* | |
| In iOS 11, interactive view controller transitions no longer scrub by setting the layer speed to zero | |
| and changing the timeOffset. As a result of this change, implicit animations that occur in places like | |
| -viewWillAppear: (called during an interactive transition) no longer end up “caught in” the animation. | |
| To get the same behavior for table view row deselection as before, you can either use UITableViewController | |
| which implements this for you, or you can implement it manually by deselecting the row in an alongside | |
| animation for the transition (set up in -viewWillAppear: using the transition coordinator). | |
| Here is an example implementation which correctly handles some of the more subtle corner cases: |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | |
| <plist version="1.0"> | |
| <dict> | |
| <key>Activity</key> | |
| <array> | |
| <string>⚽️</string> | |
| <string>🏀</string> | |
| <string>🏈</string> | |
| <string>⚾️</string> |
| iOS 10.2 Simulator: https://devimages-cdn.apple.com/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK10_2-10.2.1.1484185528.dmg | |
| iOS 10.1 Simulator: https://devimages-cdn.apple.com/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK10_1-10.1.1.1476902849.dmg | |
| iOS 10.0 Simulator: https://devimages-cdn.apple.com/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK10_0-10.0.1.1474488730.dmg | |
| iOS 9.3 Simulator: https://devimages.apple.com.edgekey.net/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK9_3-9.3.1.1460411551.dmg | |
| iOS 9.2 Simulator: https://devimages.apple.com.edgekey.net/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK9_2-9.2.1.1451951473.dmg | |
| iOS 9.1 Simulator: https://devimages.apple.com.edgekey.net/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK9_1-9.1.1.1446593668.dmg | |
| iOS 9.0 Simulator: https://devimages.apple.com.edgekey.net/downloads/xcode/simulators/com.apple.pkg.iPhoneSimulatorSDK9_0-9.0.1.1443554484.dmg | |
| iOS 8.4 Simulator: https://devimages.a |
| extension String { | |
| func isValidEmail() -> Bool { | |
| guard !self.lowercaseString.hasPrefix("mailto:") else { return false } | |
| guard let emailDetector = try? NSDataDetector(types: NSTextCheckingType.Link.rawValue) else { return false } | |
| let matches = emailDetector.matchesInString(self, options: NSMatchingOptions.Anchored, range: NSRange(location: 0, length: self.characters.count)) | |
| guard matches.count == 1 else { return false } | |
| return matches[0].URL?.scheme == "mailto" | |
| } | |
| } |
| target 'MyTarget' do | |
| use_frameworks! | |
| # Post installation script that enables the Swift 4 compiler's | |
| # legacy 3.2 mode for Swift 4-incompatible pods | |
| post_install do |installer| | |
| incompatiblePods = ['PodA', 'PodB'] | |
| installer.pods_project.targets.each do |target| | |
| if incompatiblePods.include? target.name |