fabiogiolito

//
//  FacebookReactions.swift
//
//  Created by Fabio Giolito on 10/06/2019.
//  Follow me: https://twitter.com/fabiogiolito
//

import SwiftUI

struct FacebookReactions : View {

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

eleev

extension UIImage {
    convenience init?(color: UIColor, size: CGSize = CGSize(width: 1, height: 1)) {
        let rect = CGRect(origin: .zero, size: size)
        UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
        color.setFill()
        UIRectFill(rect)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        
        guard let cgImage = image?.cgImage else { return nil }

JanJastrow

#!/bin/bash

# http://neondust.tumblr.com/post/97723922505/simple-tumblr-backup-script-for-mac-os-x-and-linux
# https://gist.github.com/doersino/7e3e5db591e42bf543e1

# BLOGS is a space-separated list of the blogs you want to backup. You can omit
# the ".tumblr.com" part if you want.
BLOGS="neondust.tumblr.com aufgeloest.tumblr.com hejlisten.tumblr.com"
# OUT is the directory where the backups will be stored. For each blog, a date-
# prefixed subdirectory will be created here.

tahmidsadik

How to Completely Remove Android Studio


Execute these commands from the terminal

rm -Rf /Applications/Android\ Studio.app
rm -Rf ~/Library/Preferences/AndroidStudio*
rm ~/Library/Preferences/com.google.android.studio.plist
rm -Rf ~/Library/Application\ Support/AndroidStudio*
rm -Rf ~/Library/Logs/AndroidStudio*

robotconscience

// change this to a recognizeable piece of your audio output
// e.g. setAudioOutput("AirPlay"); or setAudioOutput("VoilaDevice");
// returns true on success / false on beef

// as always, all thanks to StackOverflow for the amazing
// enumerate devices script:
// http://stackoverflow.com/questions/1983984/how-to-get-audio-device-uid-to-pass-into-nssounds-setplaybackdeviceidentifier

// Note: if you change "kAudioDevicePropertyScopeOutput" to "kAudioObjectPropertyScopeGlobal" in line 62,
// you can set the output for your whole system...

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

HeshamMegid

#import <Foundation/Foundation.h>
#import "Contact.h"

@interface AddressBookManager : NSObject

+ (NSString *)nameForContactWithPhoneNumber:(NSString *)phoneNumber;
+ (UIImage *)photoForContactWithPhoneNumber:(NSString *)phoneNumber;

@end