JohnSundell

import SwiftUI

// Model + controller:

struct NamedTimer: Identifiable, Equatable {
    let id = UUID()
    var name: String
    var seconds = 0
}

JohnSundell

import SwiftUI

struct Item: Equatable, Identifiable {
    let id = UUID()
    var title: String
    var isFavorite = false
}

@MainActor class ListViewModel: ObservableObject {
    @Published private(set) var items: [Item] = []

JohnSundell

import SwiftUI

/// View that observes its position within a given coordinate space,
/// and assigns that position to the specified Binding.
struct PositionObservingView<Content: View>: View {
    var coordinateSpace: CoordinateSpace
    @Binding var position: CGPoint
    @ViewBuilder var content: () -> Content

    var body: some View {

JohnSundell

// A fun little game written in SwiftUI
// Copyright (c) John Sundell 2020, MIT license.
// This is a hacky implementation written just for fun.
// It's only verified to work on iPhones in portrait mode.

import SwiftUI

final class GameController: ObservableObject {
    @Published var plane = GameObject.plane()
    @Published private(set) var clouds = [GameObject]()

JohnSundell

#!/usr/bin/env bash

# Put this file in /usr/local/bin and then run chmod +x on it to make it executable

command=$1
shift

case $command in
    "init" )
        swift package init "$@"

JohnSundell

#!/usr/bin/env bash

# If run without a name, open any current repo
if [ -z "$1" ]; then
    URL=$(git remote get-url origin)
    URL=${URL/"git@github.com:"/"https://github.com/"}
    URL=${URL/".git"/""}
    open $URL
else
    open "https://github.com/$1"

JohnSundell

#!/bin/bash

ITERATION=1
EXTENSION="mp4"
FILENAME="$HOME/Desktop/Simulator Recording.$EXTENSION"

while [ -e "$FILENAME" ]
do
    ITERATION=$((ITERATION+1))
    FILENAME="$HOME/Desktop/Simulator Recording $ITERATION.$EXTENSION"

JohnSundell

extension Optional {
    struct RequireError: Error, CustomStringConvertible {
        var description: String {
            return "Required optional value was nil"
        }
    }

    func require(orThrow errorClosure: @autoclosure () -> Error = RequireError()) throws -> Wrapped {
        switch self {
        case .some(let value):

JohnSundell

// Either put this in a separate file that you only include in your macOS target
// or wrap the code in #if os(macOS) / #endif

import Cocoa

// Step 1: Typealias UIImage to NSImage
typealias UIImage = NSImage

// Step 2: You might want to add these APIs that UIImage has but NSImage doesn't.
extension NSImage {

JohnSundell

target 'MyTarget' do
    use_frameworks!

    # Post installation script that enables the Swift 4.2 compiler's
    # legacy 4.1 mode for 4.2-incompatible pods
    post_install do |installer|
      incompatiblePods = ['PodA', 'PodB']

      installer.pods_project.targets.each do |target|
          if incompatiblePods.include? target.name