When a UITableViewCell gets highlighted it highlights all its subviews, which is annoying sometimes.

KVO is a very nice programming facility, except for some annoying defects.

Apple taught me most I need to know about how to manage the interface orientation, yet still left some dark corners. I explored them and want to share what I found.

Documentation set generation tool in Xcode is necessary for a prosperous Apple developer community. The current tools are far from Apple standard.

简单介绍我用过的各种截屏软件。

The Android API for querying SQLite databases supports two styles of queries, one simpler, one better.

Intercepting incoming calls on Android is just impossible. Here is why.

DreamHost’s snapshot backup service is a little shabby, but you can build a powerful Meta Backup yourself.

Kingsoft 的各种爸。

What’s the probability that at least one run of <var>k</var> consecutive heads occurs in <var>n</var> coin tosses? It’s an interesting problem with several interesting solutions.