Skip to content

Instantly share code, notes, and snippets.

View bdbergeron's full-sized avatar

Brad Bergeron bdbergeron

View GitHub Profile
@tadija
tadija / Xcode Semi-Automatic Versioning.md
Last active August 11, 2022 19:55
Xcode Semi-Automatic Versioning | Bump Build Number | Bump Version Number

Xcode Semi-Automatic Versioning

Instructions:

First Things First

In order for agvtool to work properly you must first set
Project Settings / Build Settings / Versioning / Versioning System to Apple Generic.

Bump Build Number

  1. Create new shared scheme 'Bump Build Number'
# VERSION 1.0.4
# Author: @madhavajay
# This currently works for iOS and watchOS in the Simulator and Devices
# Changes
# Using ${TOOLCHAIN} in two places now
# Added double quotes " around paths
# Fixed watchOS Issues
# Instructions iOS
@tclementdev
tclementdev / libdispatch-efficiency-tips.md
Last active July 8, 2025 03:48
Making efficient use of the libdispatch (GCD)

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

@cellularmitosis
cellularmitosis / EmojiPointersDemo.swift
Created August 15, 2018 18:11
Representing pointer values as emoji can be useful for "visually" debugging certain issues, like cell reuse, etc.
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
let window = UIWindow(frame: UIScreen.main.bounds)
@lostincode
lostincode / ContentView.swift
Created June 15, 2024 00:24
MeshGradient Playground iOS 18
//
// ContentView.swift
// MeshGradientPlayground
//
// Created by Bill Richards on 6/14/24.
//
import SwiftUI
struct ContentView: View {