Grant Davis gdavis

I have been using Control+Command+Space as my shortcut to launch Divvy for over a decade. MacOS now assigns that to another system command (Character Viewer) which I assign to another shortcut. To allow Divvy to use this key combo you need to update some defaults keys to force this to happen. The below commands are from Mizage who posted an answer for this on Stack Exchange. I'm reposting this in a gist for preservation and easier access.

Quit Divvy.
Launch Terminal.app and paste this command, on one line, and press enter:

defaults write com.mizage.direct.Divvy globalHotkey -dict keyCode 49 modifiers 4352
Also, paste this command, on one line, and press enter:

defaults write com.mizage.Divvy globalHotkey -dict keyCode 49 modifiers 4352
Restart Divvy.

Adopted from: https://techinfluence.net/turn-off-mouse-acceleration-on-mac/#Method_2_Turn_Off_Mouse_Acceleration_Using_the_Terminal

Check the current value of scaling in user defaults:

~ defaults read .GlobalPreferences com.apple.mouse.scaling

This will display a hidden preference setting that you can change by altering the number at the end. If the mouse acceleration feature is enabled, the above command should display a value between 0 and 3. This is the value that is altered when you move the ‘Tracking Speed’ slider

Disable mouse acceleration:

https://swiftpackageindex.com/

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 {

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.

Swift UI State Management

Storing state for Child View Models

SwiftUI is all about state, and maintaining that state can be rather difficult when you have more than a few properties stored as @State for your view. It is common practice to use a view model to store the state outside of the view, since our views are constantly recreated as our state changes. Keeping what state you want in memory can provide a challenge, much more so than it may seem at first glance.

With SwiftUI 2, using @StateObject will keep a view model from being recreated with each rendering of a view's body. If the parent view is creating the view model, and then passing that down to the child view, that view model will also be recreated with each rendering of that parent view body.

struct ParentView: View {
  var body: some View {

	//
	// SkeletonGradientAnimationView.swift
	// Mimir
	//
	// Created by Grant Davis on 3/18/22.
	// Copyright © 2022 Grant Davis Interactive, LLC. All rights reserved.
	//

	import Foundation
	import SwiftUI


	### --------------------------------------------------------------------------------------------------
	#
	# The code below has been adotped and modified from https://stackoverflow.com/a/68022221/189292
	# This allows the project to increment build numbers on a per-target basis, instead of updating the entire
	# project for all targets when using the standard `increment_build_number` lane.
	#
	### --------------------------------------------------------------------------------------------------
	# Sets the "BUILD" number for a target
	#

	//
	// ThreadSafe.swift
	// GDICore
	//
	// Created by Grant Davis on 1/2/21.
	// Updated to support `_modify` accessor on 12/5/21.
	//
	// Copyright © 2021 Grant Davis Interactive, LLC. All rights reserved.
	//
	import Foundation

	<?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>DVTConsoleDebuggerInputTextColor</key>
	<string>1 1 1 1</string>
	<key>DVTConsoleDebuggerInputTextFont</key>
	<string>SFMono-Semibold - 12.0</string>
	<key>DVTConsoleDebuggerOutputTextColor</key>
	<string>1 1 1 1</string>