Objective-c learning 2 Overview, objective-c Overview
This article mainly introduces some basic concepts to understand the Retina screen of the IOS device of the Objective-CSDK Application
This is what I would like to explain. when Steve Jobs launched the iPhone 4, the word Retina screen swept the world (I thought the Retina screen was an apple screen: pixel density 326ppi (pixels arranged per inch) is the Retina screen (beyond this density, the naked eye cannot tell the pixel, so it is called the retina, currently, many mobile phones can meet this standard .)
What are the most important things about language learning?
Why does a lot of students have many reference books when they are in junior and senior high school? Because they do not understand the basic principles and knowledge. Therefore, two words, basic, basic principle, and basic language are very important.
Four Stages of code writing:
- Read-read is also an imitation
- Imitation
- Write-read and imitate-write code can also write language sense
- Check-the method is hard to remember-but you can find them, this is the ability
Value of knowledge: Finally:
English reading is vital to a Chinese programmer. Reading the official documents for 30 minutes every day has benefited a lot.