gdavis

Swift Concurrency

Video: Meet async/await in Swift

With Swift concurrency, functions, initializers, read-only properties, and for-loops can all be marked async. Property getters can also throw.

func fetchThumbnails() await throws -> [UIImage] {
}

extension UIImage {

gdavis

Xcode VIM

Learning VIM in Xcode comes with its own set of challenges and limitations, but there is enough there for you to give your mousing hand a break and master the keyboard.

A limited set of commands are available in Xcode, and this document attempts help ease the learning curve of using VIM in Xcode by providing a handy reference as well as what I find works for me in practice.

NOTE: Commands are case-sensitive. A command of N means pressing shift + n on the keyboard.

This document is a work in progress! Leave a comment if you would like to see a change.

jtodaone

import AVFoundation

extension AudioBuffer {
    func array() -> [Float] {
        return Array(UnsafeBufferPointer(self))
    }
}

extension AVAudioPCMBuffer {
    func array() -> [Float] {

joshbuchea

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

mminer

import AppKit

class PreferencesViewController: NSTabViewController {

    private lazy var tabViewSizes: [NSTabViewItem: NSSize] = [:]

    override func tabView(_ tabView: NSTabView, didSelect tabViewItem: NSTabViewItem?) {
        super.tabView(tabView, didSelect: tabViewItem)

        if let tabViewItem = tabViewItem {

skabber

#!/bin/bash

function usage {
	echo "Usage: $0 -c [CodeSign Directory] -p [Xcode Project File.xcodeproj]"
	echo "If any arguments are not specified, defaults will be attempted. If defaults don't exist, script will exit."
	echo "OPTIONS:"
	echo "  -c [CodeSign Directory]: Location of directory containing project's provisioning profiles."
	echo "  -p [Xcode Project File]: Path of Xcode project directory (the .xcodeproj, not .pbxproj)"
	echo "  -b: Use PlistBuddy command for UUID replacement instead of sed. (Better handling of a couple of edge cases, but makes diffs impossible to read.)"
	echo "  -v: Verbose logging."

randomsequence

//: Playground - noun: a place where people can play

import Cocoa

let bounds = CGRectMake(0, 0, 100, 100);

func DrawImageInCGContext(#size: CGSize, #drawFunc: (context: CGContextRef) -> ()) -> NSImage {
    let colorSpace = CGColorSpaceCreateDeviceRGB()
    let bitmapInfo = CGBitmapInfo(CGImageAlphaInfo.PremultipliedLast.rawValue)
    let context = CGBitmapContextCreate(

gdavis

//
//  GDILog.h
//  GDILog
//
//  Created by Grant Davis on 8/18/14.
//  Copyright (c) 2014 Grant Davis Interactive, LLC. All rights reserved.
//

#ifdef DEBUG
#include <string.h>

mchambers

// Let's define a basic Swift class.
class Fruit {
    var type=1
    var name="Apple"
    var delicious=true
}

// We can get at some info about an instance of an object using reflect(), which returns a Mirror.
reflect(Fruit()).count
reflect(Fruit())[1].0

bmatcuk

How to Symbolize OSX Crash Logs

Unfortunately, xcode does not yet have support for importing OSX crash logs and symbolizing them. Therefore, you must use the command line and a little bit of manual work.

1. Find your dSYM file.
   1. Assuming you are using xcode's archive functionality, open the Organizer window from the Window menu.
   2. Click the Archives tab.
   3. Right click on the appropriate build and select Show in Finder.
   4. When Finder opens, right click on the selected archive and select Show Package Contents.
   5. Navigate to the dSYM directory and copy the appropriate dSYM file to a temporary directory.
2. Then navigate to Products, then Applications, and copy the app file to the same temporary directory.