This blog talks about the basic of iOS Settings Bundle. If your app only needs to include basic setting options, you can use the iOS Settings Bundle to include all the setting options into the native iOS settings app. It has been used heavily in my Hourglass app for all the setting options, and it works pretty well.

This blog talks about the basic of core data. Mainly focused on how to use core data to save your object into the database. It will cover some problem I met when I was using core data. More advanced usage will be covered in future posts.

Protobuf-Swift is a swift framework for protobuf. it contains a swift framework and a compiler you can use on macOS and Linux.

Hexo is a simple and powerful blog framework. Here, we want to connect Hexo with emacs org mode. The result is you can create a new post in emacs, write in org, insert images like normal and deploy it to github pages.

In short, add <T> after the function name, pass in a parameter with type T.Type, and when you need to use that parameter, usually you call the name of the parameter, but instead, you use the type T

This post talks about the basic for ios location service. How to setup the CLLocationManager to get user's current location? For Xcode 8.1, Swift 3.0

Here is how to setup AutoLayout along with UIScrollView

I love write down things I leaned. So I need to find a way to organize my notes and search though them easily. After trying all different kinds of tools, I found out that Org Emacs mode suit me the best. It can insert code blocks easily. Stores as plain text files. I also have used vim for years. With evil mode, I can still use the vim keybindings. For task management, I love manage my everyday tasks. I also tried lots of gtd tools for this as well and org agenda is the most powerful tool for task management as well.

Here everything related ssh keys.