gonzalezreal

/// A type that has an "empty" representation.
public protocol EmptyRepresentable {
  static func empty() -> Self
}

extension Array: EmptyRepresentable {
  public static func empty() -> Array<Element> {
    return Array()
  }
}

briankc

import Cocoa
import CoreGraphics

extension NSScreen {
  var displayID: CGDirectDisplayID {
    return deviceDescription["NSScreenNumber"] as? CGDirectDisplayID ?? 0
  }
}

claybridges

// UIInterfaceOrientationMask vs. UIInterfaceOrientation
// As far as I know, a function like this isn't available in the API. I derived this from the enum def for
// UIInterfaceOrientationMask.
inline BOOL OrientationMaskSupportsOrientation(UIInterfaceOrientationMask mask, UIInterfaceOrientation orientation) {
    return (mask & (1 << orientation)) != 0;
}

tomasbasham

@implementation UIImage (scale)

/**
 * Scales an image to fit within a bounds with a size governed by
 * the passed size. Also keeps the aspect ratio.
 *
 * Switch MIN to MAX for aspect fill instead of fit.
 *
 * @param newSize the size of the bounds the image must fit within.
 * @return a new scaled image.

kdeda

import SwiftUI

/**
 hack to avoid crashes on window close, and remove the window from the
 NSApplication stack, ie: avoid leaking window objects
 */
fileprivate final class WindowDelegate: NSObject, NSWindowDelegate {
    func windowShouldClose(_ sender: NSWindow) -> Bool {
        NSApp.removeWindowsItem(sender)
        return true