shial4

import SwiftUI
import Foundation
import PlaygroundSupport

public enum Orientation {
    case horizontal
    case vertical
}

public struct StackView<Content: View>: View {

danielmartin

If you work on a Swift project that follows the Model-View-ViewModel (MVVM) architecture or similar, you may want to jump to counterpart in Xcode from your view to your model, and then to your view model. (ie. by using Ctrl+Cmd+Up and Ctrl+Cmd+Down).

You can do this in recent versions of Xcode by setting a configuration default.

From a terminal, just type this command and press Enter:

defaults write com.apple.dt.Xcode IDEAdditionalCounterpartSuffixes -array-add "ViewModel" "View"

alexpaul

// Works on Xcode 11 GM as of 09/12/19

// Presenting view
// make sure the .sheet modifier is tied to the root View  
import SwiftUI

struct ContentView: View {
  
  @State private var showingModalView = false
  

steipete

// Don't forget to prefix your category!

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface UIWindow (PSPDFAdditions)

#if TARGET_OS_UIKITFORMAC

jeamland

#!/usr/bin/env python

# Extract playlists from a non-XML iTunes Library file (.itl)
# Copyright (c) 2018 Benno Rice, released under the BSD (2 Clause) Licence.

# Important information on the encryption used in the .itl file found here:
# https://mrexodia.cf/reversing/2014/12/16/iTunes-Library-Format-1
# Highly useful information on the .itl format itself found here:
# https://github.com/josephw/titl/blob/master/titl-core/src/main/java/org/kafsemo/titl/ParseLibrary.java

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

daehn

import Foundation
import MobileCoreServices

struct UTType: CustomStringConvertible {
    let value: CFString
    init?(mimeType: String) {
        guard let UTI = UTTypeCreatePreferredIdentifierForTag(kUTTagClassMIMEType, mimeType as CFString, nil)?.takeUnretainedValue() else { return nil }
        value = UTI
    }
    

jessesquires

# blog post
#
# https://www.jessesquires.com/blog/customizing-git-log/

git log --graph --pretty=format:'commit: %C(bold red)%h%Creset %C(red)<%H>%Creset %C(bold magenta)%d %Creset%ndate: %C(bold yellow)%cd %Creset%C(yellow)%cr%Creset%nauthor: %C(bold blue)%an%Creset %C(blue)<%ae>%Creset%n%C(cyan)%s%n%Creset'

zwaldowski

let swift = UTType.swiftSource
print(swift) // => Swift Source Code
print(swift.rawValue) // public.swift-source
print(swift.conforms(to: .sourceCode)) // => true
print(swift.declaration?[.conformsTo] as Any) // [ "public.source-code" ]
print(swift.declaringBundleURL as Any) // => /System/Library/CoreServices/MobileCoreTypes.bundle
print(swift.isDeclared) // => true
print(swift.isDynamic) // => false
print(swift.preferredTag(for: .filenameExtension) as Any) // => "swift"
print(UTType(preferredTag: "swift", for: .filenameExtension, conformingTo: nil) == swift) // => "true"

mrlesmithjr

---
- name: Install MacOS Packages
  hosts: localhost
  become: false
  vars:
    brew_cask_packages:
      - atom
      - docker
      - dropbox
      - firefox