hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

phatmann

//  Created by Tony Mann on 3/22/15.
//  Copyright (c) 2015 7Actions. All rights reserved.
//
//  Adapted from http://ossh.com.au/design-and-technology/software-development/implementing-rich-text-with-images-on-os-x-and-ios/

import UIKit

class ImageAttachment: NSTextAttachment {
    var verticalOffset: CGFloat = 0.0
    

orlando

1. Run Software Update

Make sure everything is up to date in the App Store

2. Install Homebrew

1. Open a terminal window and execute the Homebrew install script:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

rmhsilva

A collection of information about accessing raw MultiTouch events on MacOS.

Useful URLS

• http://www.makeitgo.ws/articles/fingermgmt/
• https://github.com/fajran/tongseng/blob/master/Makefile
• https://github.com/calftrail/TrackMagic/blob/master/MultitouchSupport.h
• https://encyclopediaofdaniel.com/blog/making-the-magic-trackpad-work/
• https://github.com/calftrail/Touch/blob/master/TouchSynthesis/MultitouchSupport.h

fousa

class FairPlayer: AVPlayer {
  
  private let queue = DispatchQueue(label: "com.icapps.fairplay.queue")
 
  func play(asset: AVURLAsset) {
    // Set the resource loader delegate to this class. The `resourceLoader`'s delegate will be 
    // triggered when FairPlay handling is required.
    asset.resourceLoader.setDelegate(self, queue: queue)
    
    // Load the asset in the player.

insdavm

WireGuard Site-to-Site

Accessing a subnet that is behind a WireGuard client using a site-to-site setup

Problem Summary

We want to access a local subnet remotely, but it is behind a NAT firewall and we can't setup port forwarding. Outgoing connections work, but all incoming connections get DROPPED by the ISP's routing policy.

Solution Summary

hsjunnesson

#include "scheme.h"
#include "base.c"

static int run(Scheme_Env* e, int argc, char* argv[]) {
	scheme_env = e;

	declare_modules(e);

	scheme_namespace_require(scheme_intern_symbol("racket/base"));

mattt

import UIKit

#if canImport(SwiftUI) && DEBUG
import SwiftUI
struct UIViewControllerPreview<ViewController: UIViewController>: UIViewControllerRepresentable {
    let viewController: ViewController

    init(_ builder: @escaping () -> ViewController) {
        viewController = builder()
    }

IanColdwater

Mute these words in your settings here: https://twitter.com/settings/muted_keywords

ActivityTweet
generic_activity_highlights
generic_activity_momentsbreaking
RankedOrganicTweet
suggest_activity
suggest_activity_feed
suggest_activity_highlights
suggest_activity_tweet

steipete

class FirebaseCoordinator {
    static let shared = FirebaseCoordinator()
    static let initialize: Void = {
        /// We modify Google Firebase (and eventually Analytics) to load the mac-specific plist at runtime.
        /// Google enforces that we have a file named "GoogleService-Info.plist" in the app resources.
        /// This is unfortunate since we need two different files based on iOS and Mac version
        /// One solution is a custom build step that copies in the correct file:
        /// https://stackoverflow.com/questions/37615405/use-different-googleservice-info-plist-for-different-build-schemes
        /// However, this is basically impossible since Catalyst doesn't set any custom build variables, so detection is extremely difficult.
        /// We swizzle to modify the loading times.