光阴似箭催人老，日月如移越少年。
It is recommended to use xcode7 directly, at least everyone is using it, and it is easier to answer the problems you encounter
I haven’t traveled through time, Xcode 4.4 is no longer useful for learning iOS, and the API has also changed a lot. When you make an iOS App, you must at least cover mainstream models
Why are you using such an old version...Update or...
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
It is recommended to use xcode7 directly, at least everyone is using it, and it is easier to answer the problems you encounter
I haven’t traveled through time, Xcode 4.4 is no longer useful for learning iOS, and the API has also changed a lot. When you make an iOS App, you must at least cover mainstream models
Why are you using such an old version...Update or...