If you are using pure auto layout to setup user interface, you might experience some issue when setup dynamic height for UITextView or UITextField.

When I start to setup the blog, I use hexo with pure markdown file and host them using free GitHub.io services. Now I need to use my custom domain name under GitHub.io pages.

I joined udacity ”Self-Driving Nano-Degree Program”. Here is my notes on the first project - detecting lane lines.

So recently I need to develop Hourglass website, in order to do so, I need to setup a local web server for that. I know that many people uses MAMP, however, I don’t like that. I think it installs way too much things compare to what I need, and a simple Apache in this case is what all I want.

When I was implementing the Mapsted Navigation app, one thing I need is to know if device is connected to network. The ideal case for me is to have a function to call isConnected() and will return true if connected, false if not.

How to dynamically adjust table view height depending on its content? I got this perfect solution from this stackoverflow post. Below is the detail of the post.

Introduce: Add / Remove Child View Controller

How to set corner radius for different corner? For example, I want top left, top right, bottom left to have corner radius 5.0, but bottom right to have 0.0

When submit out app to app store on iTunes connect, sometimes you will see it asking us to provide compliance information. When I sees that it asks me if my app uses any encryptions. I feel like no, my app is not using any encryption. I didn’t encrypt any of the file on disk etc. However, the iTunes connect warned me if I am making a call to HTTPS. What does that mean?

I haven’t touch the code for Mapsted Navigation for iOS a long time, and after I refactor the code I open the app, I notice that there is a significant lag when scroll in building list. End up it caused by assign image to an UIImageView.