ragingwind

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Introduce Gizzard of Twitter - 트위터의 새로운 분산 관리 라이브러리 Gizzard를 소개합니다.
• The Architecture Twitter Uses to Deal with 150M Active Users, 300K QPS, a 22 MB/S Firehose, and Send Tweets in Under 5 Seconds
• Scaling Twitter: Making Twitter 10000 Percent Faster

steipete

//
// PSPDFThreadSafeMutableDictionary.m
//
// Copyright (c) 2013 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
//
// 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

aras-p

// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

JaseHadd

steipete

# The trick is to link the DeviceSupport folder from the beta to the stable version.
# sudo needed if you run the Mac App Store version. Always download the dmg instead... you'll thank me later :)

# Support iOS 15 devices (Xcode 13.0) with Xcode 12.5:
sudo ln -s /Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport/15.0 /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/DeviceSupport

# Then restart Xcode and reconnect your devices. You will need to do that for every beta of future iOS versions

# (A similar approach works for older versions too, just change the version number after DeviceSupport)

benjaminsnorris

import UIKit

class TextEditing: UIViewController {
  
  @IBOutlet weak var textView: UITextView?
  
  func updateText(with newString: String?) {
    guard let textView = textView, newString = newString, (diffRange, changedText) = diff(textView.text, newString) else { return }
    guard let selectedRange = textView.selectedTextRange else { textView.text = newString; return }
    textView.text = newString

ilyapuchka

!/bin/sh
SAVEIFS=$IFS
IFS=$(echo -en "\n\b")
FILES=($(git ls-files -m | grep ".*\.swift$" | grep -v ".*R.generated.swift$"))

if [[ ${FILES[@]} ]]; then
export "SCRIPT_INPUT_FILE_COUNT"="${#FILES[@]}"
for i in "${!FILES[@]}"; do
  export "SCRIPT_INPUT_FILE_$i"="${FILES[$i]}"  
done

JohnCoates

import UIKit

extension UIGestureRecognizer {
    @discardableResult convenience init(addToView targetView: UIView,
                                        closure: @escaping () -> Void) {
        self.init()
        
        GestureTarget.add(gesture: self,
                          closure: closure,
                          toView: targetView)

fuji246

I find the scale of UIPinchGestureRecognizer is confusing, so I did two experiments below, two ways to do the same thing.

Method 1

gestureRecognizer.scale start with 1.0 at the beginning of pinch (gestureRecognizer.state == .began), and gestureRecognizer.scale in later state (.changed or .end) is always based on that, for example, if the view size is view_size at the beginning of pinch (might not be the same with the original size orig_view_size), gestureRecognizer.scale always starts with 1.0, and if it becomes 2.0 later, it's size will be 2 * view_size, so the scale always based on that when the pinch starts. And we can get the scale at the beginning of pinch (gestureRecognizer.state == .began) lastScale = self.imageView.frame.width/self.imageView.bounds.size.width, so the scale of the original image now should be lastScale * gestureRecognizer.scale

• lastScale: The scale of last round of Pinch, a round of Pinch is from state.start to state.end, and the scale is based on the o

samrayner

import Foundation
import RealmSwift
import Realm

//Forked from: https://gist.github.com/krodak/b47ea81b3ae25ca2f10c27476bed450c

internal protocol CascadingDeletable: RealmSwift.Object {
    static var propertiesToCascadeDelete: [String] { get }
}