joshavant

extension UIView {
    @objc func exerciseAmbiguityInLayoutRepeatedly() {
        if self.hasAmbiguousLayout {
            Timer.scheduledTimer(timeInterval: 0.5,
                                 target: self,
                                 selector: #selector(UIView.exerciseAmbiguityInLayout),
                                 userInfo: nil,
                                 repeats: true)
        }
    }

davedelong

on setDarkMode(shouldBeDark)
	
	set paneID to "com.apple.preference.general"
	
	tell application "System Events"
		if dark mode of appearance preferences is shouldBeDark then return
	end tell
	
	set paneWasOpen to false
	

tclementdev

libdispatch efficiency tips

The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).

My take-aways are:

• You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.

• Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse

0xced

{
  "People" : [
    {
      "Symbol" : "😀",
      "Name" : "GRINNING FACE"
    },
    {
      "Symbol" : "😬",
      "Name" : "GRIMACING FACE"
    },

steipete

# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

# (A similar approach works for older versions too, just change the version number after DeviceSupport)

natecook1000

import Foundation

extension UnicodeScalar : ForwardIndexType {
    public func successor() -> UnicodeScalar {
        return UnicodeScalar(value + 1)
    }
}

var operatorHeads: [UnicodeScalar] = Array("=-+!*%<>&|^~?".unicodeScalars)
operatorHeads += Array("\u{00A1}" ... "\u{00A7}")

ratazzi

#!/usr/bin/env ruby

require 'rubygems'
require 'xcodeproj'

name = 'test_copy'

proj = Xcodeproj::Project.open('test.xcodeproj')
src_target = proj.targets.find { |item| item.to_s == 'test' }

nicklockwood

Hacking UIView animation blocks for fun and profit

In this article, I'm going to explore a way that we can create views that implement custom Core Animation property animations in a natural way.

As we know, layers in iOS come in two flavours: Backing layers and hosted layers. The only difference between them is that the view acts as the layer delegate for its backing layer, but not for any hosted sublayers.

In order to implement the UIView transactional animation blocks, UIView disables all animations by default and then re-enables them individually as required. It does this using the actionForLayer:forKey: method.

Somewhat strangely, UIView doesn't enable animations for every property that CALayer does by default. A notable example is the layer.contents property, which is animatable by default for a hosted layer, but cannot be animated using a UIView animation block.

priore

//
// Icon with symbol of the beta version instead of the number of badges.
//
// The first thing to note is that the method uses a private API
// so you don't want the code included in your App Store build.
// You can use conditional compilation to achieve this.
//
// original post from @sgaw
//
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

hofmannsven

Git

Global Settings

• Related Setup: https://gist.github.com/hofmannsven/6814278
• Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
• Interactive Beginners Tutorial: http://try.github.io/
• Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!