This is the earlier in Tang Qiao Daniel blog to see, although the time has been quite long. But I think it's very meaningful, just mark.
Did you notice? In Xcode, when you click to view the call stack, there is an icon in front of each method of the call stack, and there are several different looks, as shown, do you know what they mean?
In fact, they represent the following meanings:
- Person icon is User
- Mug icon is AppKit (or UIKit)
- Briefcase icon is frameworks
- Gear icon is System
- Morse code icon is Foundation
- Spider Web looking icon is Web
In addition, the icons in the Debuger (as shown) also make sense:
The specific meanings are as follows:
- L = Local Variable
- A = Argument
- S = Static Variable
- V = Global Variable
- R = Register
- i = Instance variable
- E = Expression
Perhaps you think the above content is not practical value, then share a practical.
In XCode5, click on a small eye icon to preview the contents of the UIImage directly, as shown in:
The meaning of the icon symbol in the iOS development-XCode Debugger
