DebuggingA subprocess can be entered in the course of debugging.
AppCode comes bundled with an LLDB debugger.
Start a debugging session
Configure the Run/Debug Configurations profile ( ). For more information, see Configuring Debugger Options.
Define a run/debug configuration for the application to be debugged.
Create a breakpoint .
Click the Debug icon (). Read more about debugging sessions in Starting the Debugger Session.
After you've started a debug session, the icon that marks the Debug tool window toggles to to indicate that the debug process is active.
After you have configured a run configuration for your project, you can launch it in debug mode by pressing ⌃D.
In the Debug tool window you can see the list of frames and threads with their states, variables and watches. When you select a frame, you see the variables corresponding to the selected frame.
Customize breakpoint settings
To customize breakpoint settings, press ⇧⌘F8. To see all breakpoints in the project (with additional settings), click More or press the same shortcut ⇧⌘F8 again.
If you have any instance marked with a label, you can use it in the condition expression as well:
Do not suspend code execution
Use action breakpoints to evaluate a variable at a particular line of code without suspending code execution. To create an action breakpoint, click the gutter while pressing Shift.
Create a temporary breakpoint
To create a breakpoint that stops only once, click the left gutter while holding Shift + Alt. For more information, refer to the section Breakpoints.
To disable a breakpoint, click the breakpoint while pressing Alt. Refer to the section Breakpoints for details.
In case you want to “go back in time” while debugging you can do it via Drop Frame action. This is a great help if you mistakenly stepped too far. This will not revert the global state of your application but at least will get you back by stack of frames.
The icon is described in the Debug tool window reference.
Run to cursor
To stop code execution at the cursor position without adding another breakpoint, click the Run to cursor icon() or press ⌥F9.
The icon is described in the toolbar reference of the Debug tool window.
The next time this instance appears in Watches, Variables or Evaluate expression, you will see the label:
While in debug mode, you can evaluate any expression by pressing ⌥F8.
This tool provides code completion just as in the editor so it’s very easy to enter any expression:
If you have any instances marked with labels, code completion will offer you its names so you can evaluate them:
Refer to the section Evaluating Expressions for details.
Configuring debugger settings
To change debugger settings, click Settings menu, click .. In the