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struct InspectableComponent {
    var isHideBackBarButtonTitle = true
}

protocol HasInspectableComponent {
    var inspectableComponent: InspectableComponent { get set }
}

protocol InspectableAttribute: HasInspectableComponent { }

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Automatic build versions from git in Xcode (and other goodies)

Installation procedure for pre-build actions to automatically populate Xcode Info.plist with dynamic data.

1. Xcode Scheme pre-action

Edit Xcode Scheme and add a pre-action script. Copy the contents of preaction.sh into the pre-action script box.

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NSTimer is a great example of an over-verbose, outdated Objective-C API. To run a simple line of code after a delay, you need to write a lot of boilerplate crap.

How about this:

NSTimer.schedule(5.seconds) {
  println("Hello world!")
}

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import Foundation

let size = MemoryLayout<Int16>.stride
let data = Data(bytes: [1, 0, 2, 0, 3, 0]) // little endian for 16-bit values

let int16s = data.withUnsafeBytes { (bytes: UnsafePointer<Int16>) in
    Array(UnsafeBufferPointer(start: bytes, count: data.count / size))
}

let length = data.count * MemoryLayout<Int16>.stride

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func ==<U: Equatable, T: protocol<RawRepresentable, Equatable> where T.RawValue == U>(lhs: U, rhs: T) -> Bool {
  return lhs == rhs.rawValue
}

func !=<U: Equatable, T: protocol<RawRepresentable, Equatable> where T.RawValue == U>(lhs: U, rhs: T) -> Bool {
  return lhs != rhs.rawValue
}

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```swift
#if swift(>=4.2)
print("Swift4.2")
#elseif swift(>=4.1)
print("Swift4.1")
#elseif swift(>=4.0)
print("Swift4.0")
#elseif swift(>=3.3)
print("Swift3.3")
#elseif swift(>=3.2)

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import UIKit

class VerticalButton: UIButton {

  override func awakeFromNib() {
    super.awakeFromNib()

    titleLabel?.textAlignment = .center
  }

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import UIKit

extension UIView {
    
    var allSubviews: [UIView] {
        subviews + subviews.flatMap { $0.allSubviews }
    }
    
    func firstSubview<T: UIView>(of type: T.Type) -> T? {
        allSubviews.first { $0 is T } as? T

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import UIKit

public extension NSCollectionLayoutAnchor {
    struct Offset {
        fileprivate var absolute: CGPoint?
        fileprivate var fractional: CGPoint?
        
        private init(absolute: CGPoint?, fractional: CGPoint?) {
            self.absolute = absolute
            self.fractional = fractional

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