How do you inspect variables with Xcode debugger?

3 How to inspect variables?

When you hit a breakpoint, Xcode debugger will show you the values of the variables in the current scope in the debug area. You can expand or collapse the variables to see their properties, elements, or subviews. You can also hover over a variable in the editor to see its value in a pop-up window, or right-click on it to reveal more options, such as Quick Look, Edit Value, or Watch. You can also use the console to print the values of variables using the print() or po() commands, or to evaluate expressions using the expression command.

4 How to watch variables?

Watching variables is a way to monitor the changes of specific variables throughout the execution of your app. You can add variables to the watch list by right-clicking on them and selecting Watch, or by using the watch command in the console. The watch list will show you the current values of the watched variables, and highlight them when they change. You can also remove variables from the watch list by right-clicking on them and selecting Remove Watch, or by using the unwatch command in the console.

5 How to modify values?

Sometimes, you may want to change the values of variables during debugging to test different scenarios or fix temporary errors. You can modify values by double-clicking on them in the debug area and typing a new value, or by right-clicking on them and selecting Edit Value. You can also use the expression command in the console to assign a new value to a variable. For example, you can use expression myVar = 10 to set the value of myVar to 10.

6 How to use view debugger?

View debugger is a tool that lets you inspect the user interface of your app as a 3D model. You can use view debugger to see the layout, constraints, frames, bounds, colors, and other attributes of your views. You can also select a view and see its corresponding code in the editor, or vice versa. You can access view debugger by clicking on the Debug View Hierarchy button in the debug area, or by using the command-shift-Y shortcut. You can also use view debugger to modify the properties of your views, such as changing their background color or hiding them.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?