The Virtual Debugger is a powerful new tool in Understand, designed to help you step through your code sequentially, identify issues, and better comprehend the flow of your program.


With the Virtual Debugger, you can:

  • Analyze decision points: Step through if-else statements, switch statements, and other decision points to see which branches are taken and why.
  • Identify issues with function calls: Examine input parameters, return values, and the behavior of called functions.
  • Understand loop behavior: See how loops iterate, update variables, and evaluate conditions.
  • Simplify complex code: Break down complex code into manageable pieces and understand the overall flow.



Accessing the Virtual Debugger

There are three options for accessing the Virtual Debugger:

  1. Right-click context menu: Right-click on a function entity and select "Virtual Debugger" from the context menu.
  2. Shortcut: Use the shortcut Ctrl + Shift + B with a function entity selected.
  3. Toolbar icon: Click on the new bug icon in the toolbar.


Navigating the Virtual Debugger

You can navigate the Virtual Debugger using your keyboard:

  • Up Arrow: Previous statement
  • Down Arrow: Next statement
  • Right Arrow: Enter block
  • Return/Enter: Enter selected function
  • Esc: Exit current function


A green arrow indicator will show you what line you are on in the source code at any given point. If you are at a function call that can be entered, another small green indicator will appear underneath the accessible function.



Watch this video to see the Virtual Debugger in action: