Victor Sigler Vkt0r

Diff output of two lldb commands

Setup

Copy the contents of the last snippet (lldbinit) from the gist page, and paste into your .lldbinit file. This makes the ksdiff macro known inside lldb.
Put file ksdiff.py in ~/.lldb/
sudo pip install temp
Restart Xcode debug session

Example

(lldb) ksdiff ;

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

DEPRECATED for Xcode 10 🎈

(check out What's New in Swift at 11:40, slide 42)

Whole Module Compilation Optimizations: Why these terms are sometimes misleading

When you look up how to compile swift faster for debug builds, people very earnestly give advice that seems contradictory: you should "try using the whole module optimization flag," and also "never use whole module optimization for debugging". [^1]

This is confusing because some of us are using these two general words:

compilation: "turning text into an executable program"

Looking for a mentor in iOS?- try this post: http://stephaniehurlburt.com/blog/2016/11/14/list-of-engineers-willing-to-mentor-you

General Job Boards

Angel List - https://angel.co/jobs
Built In NYC - http://www.builtinnyc.com/jobs
Women Who Code Job Board - https://www.womenwhocode.com/jobs
HackerNews Aggregate - http://whereis-whoishiring-hiring.me/
Indeed.com - https://www.indeed.com
Core Intuition Jobs (for iOS and Mac Cocoa Developers) - http://jobs.coreint.org/
Glassdoor Jobs (US/UK) - https://www.glassdoor.com/index.htm

To start using Carthage with a new project:

List your dependencies in a Cartfile. Refer to the Carthage documentation for details.
Run carthage bootstrap --no-build --use-submodules
Create a new workspace.
Drag your existing App project into the workspace.
Drag framework dependency projects from ./Carthage/Checkouts into the workspace.
Go to the General tab of your target properties.
Add framework dependencies to Linked Frameworks and Libraries. They will show up as Workspace frameworks.
Add the same frameworks to Embedded Binaries.
Note, the previous step will probably create duplicates in Linked Frameworks and Libraries. Delete the duplicates.

Jenkins CI on OSX

Instructions on how to setup a secured Jenkins CI on a Mac.

Download & Install dependencies

All of these operations are done with your admin user.

Developer tools

Install the command line developer tools.

Videos

Introduction to Functional Programming Johannes Weiß - https://vimeo.com/100786088
ReactiveCocoa at MobiDevDay Andrew Sardone - https://vimeo.com/65637501
The Future Of ReactiveCocoa Justin Spahr-Summers - https://www.youtube.com/watch?v=ICNjRS2X8WM
Enemy of the State Justin Spahr-Summers - https://www.youtube.com/watch?v=7AqXBuJOJkY
WWDC 2014 Session 229 - Advanced iOS Application Architecture and Patterns Andy Matuschak - https://developer.apple.com/videos/play/wwdc2014/229/
Functioning as a Functionalist Andy Matuschak - https://www.youtube.com/watch?v=rJosPrqBqrA
Controlling Complexity in Swift Andy Matuschak - https://realm.io/news/andy-matuschak-controlling-complexity/

	import XCTest

	class UniversialLinktTest: XCTestCase {
	var app: XCUIApplication!

	override func setUp() {
	super.setUp()
	continueAfterFailure = false
	app = XCUIApplication()
	app.launch()

	#!/bin/bash

	# 用于创建macOS安装ISO的脚本文件
	# 初始脚本来源：http://www.insanelymac.com/forum/topic/308533-how-to-create-a-bootable-el-capitan-iso-fo-vmware/

	set -x

	SCRIPT_PATH=`pwd`/$0
	DMG_PATH="/Applications/Install macOS High Sierra.app/Contents/SharedSupport"

	# 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)