Tencent iphone interview questions

1Objective-C internal implementation 2CALayer and View relationship 3 http protocol, which elements of tcp/ip4 UITableView can be customized? 5. Define variables in C language, such as int. Under what circumstances is the maximum value of 6 different 32-bit platforms and 64-bit platforms? Why is the iphone app called back, how to avoid it ?? 8. Why leave the team?

 

1. For the first question, please refer to the following tutorial.

An in-depth tutorial on Object c

Http://www.cnblogs.com/yaski/

Chapter 1 is particularly well written

Implementation Mechanism Analysis of KVO/KVC

Http://archive.cnblogs.com/a/1886332/

2. Relationship between CALayer and View

A UIView contains the CALayer tree. CALayer is a data model that contains some objects for display, but is not used for display.

CALayer is equivalent to a layer in photoshop. Many animations can be implemented by setting CALayer. It is said that someone uses CALayer to display images to play videos.

Core animation should use CAlayer to implement various animations.

Here is a blog, the introduction can also http://www.cnblogs.com/uyoug321/archive/2011/01/22.html