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@DougGregor
DougGregor / parallel_map.swift
Created December 24, 2020 01:10
Swift async/await implementation of a parallel map
extension Collection {
func parallelMap<T>(
parallelism requestedParallelism: Int? = nil,
_ transform: @escaping (Element) async throws -> T
) async throws -> [T] {
let defaultParallelism = 2
let parallelism = requestedParallelism ?? defaultParallelism
let n = self.count
if n == 0 {
#!/bin/sh
# make sure you have imagemagick installed: brew install imagemagick
# your app_icons.sh file should have the correct permissions: run `chmod 775 app_icons.sh` in your terminal from where you put this file
# put your `my_icon.png` next to this file and run ./app_icons.sh to export your app icons
x=my_icon.png
y=${x%.*}
# delete the export directory so we start clean
@ollieatkinson
ollieatkinson / FileSystemEventStream.swift
Created October 22, 2020 10:27
sane `fsevents` in Swift
import Foundation
import Combine
public struct Event: Identifiable {
public let id: FSEventStreamEventId
public let path: String
public let flags: Flags
}
public class FileSystemEventStream {
@DreamingInBinary
DreamingInBinary / Best in Class iOS Checklist
Last active January 24, 2025 03:26
This is a public checklist updated every year after the latest version of iOS and iPadOS are shipped. It's a boiled down version of a "Best in Class" app checklist created by Jordan Morgan.
# A Best in Class Checklist
A boiled down checklist adapted from this [post](https://www.swiftjectivec.com/a-best-in-class-app/), created by @jordanmorgan10.
> To use this, create a Github Issue in your own repo, and simply copy and paste this text.
## iOS Core Technology
_Things any iOS app can benefit from_
- [ ] iCloud Sync
- [ ] Focus Filter Support

Introduce cross-import overlays to factor out cross-cutting APIs

  • Proposal: SE-NNNN
  • Authors: Becca Royal-Gordon, Varun Gandhi
  • Review Manager: TBD
  • Implementation: In master behind -Xfrontend -enable-cross-import-overlays
  • Status: Prototyped behind a feature flag

Introduction

@chriseidhof
chriseidhof / boilerplate.swift
Last active April 17, 2025 11:08
QuickMacApp
// Run any SwiftUI view as a Mac app.
import Cocoa
import SwiftUI
NSApplication.shared.run {
VStack {
Text("Hello, World")
.padding()
.background(Capsule().fill(Color.blue))
@sharplet
sharplet / Always.swift
Last active February 15, 2024 18:50
A Combine publisher that repeatedly emits the same value as long as there is demand
// Copyright (c) 2019–20 Adam Sharp and thoughtbot, inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
@sharplet
sharplet / KeychainItem.swift
Created April 25, 2020 23:57
A lightweight keychain wrapper for querying the keychain databse
// Copyright (c) 2019–20 Adam Sharp and thoughtbot, inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
/// - returns: `true` when dynamic type is `Equatable` and `==` returns `true`, otherwise `false`.
func areEquatablyEqual(_ lhs: Any, _ rhs: Any) -> Bool {
func receiveLHS<LHS>(_ typedLHS: LHS) -> Bool {
guard
let rhsAsLHS = rhs as? LHS
else { return false }
return areEquatablyEqual(typedLHS, rhsAsLHS)
}
return _openExistential(lhs, do: receiveLHS)
}
@davedelong
davedelong / NSLocale.m
Last active October 15, 2022 08:02
Locales
/*
======================================================
THIS CODE IS FOR EDUCATIONAL PURPOSES ONLY.
I'M NOT RESPONSIBLE IF YOU SHIP THIS AND IT BLOWS UP IN YOUR FACE.
IF IT DOES AND YOU COMPLAIN TO ME I WILL LAUGH AT YOU.