Arco Hsieh Arcovv

iOS Cell Registration & Reusing with Swift Protocol Extensions and Generics

A common task when developing iOS apps is to register custom cell subclasses for both UITableView and UICollectionView. Well, that is if you don’t use Storyboards, of course.

Both UITableView and UICollectionView offer a similar API to register custom cell classes:

public func registerClass(cellClass: AnyClass?, forCellWithReuseIdentifier identifier: String)
public func registerNib(nib: UINib?, forCellWithReuseIdentifier identifier: String)

Setting up iOS Universal Links

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.

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

I like Pages.app, but don't want to deal with constantly copying and pasting code around.

Here is how I do syntax highlighting in Pages.app by pressing a key command. It's based off of this post on stack exchange.

install pygments

sudo easy_install Pygments

	postgres:
	image: postgres:9.4
	volumes:
	- ./init.sql:/docker-entrypoint-initdb.d/init.sql

	//
	// Created by Dima Vartanian on 10/29/15.
	//

	import Foundation
	import Crashlytics

	// this method gives us pretty much the same functionality as the CLS_LOG macro, but written as a Swift function, the only differences are that we have to use array syntax for the argument list and that we don't get see if the method being called is a class method or an instance method. We also have to define the DEBUG compiler flag with -D DEBUG.
	/// Usage:
	///

	If:

	- you add and commit with the wrong email address in git, and
	- your remote has a hook set up to prevent you from pushing with the bad address

	Then you need to amend the author of your commit before push can succeed:

	1. fix your email address in git config:

	$ git config user.name "Your Name"