Xcode Debugger: what does italic blue text mean?

Question

Here is a screenshot:

Clearly, this means that the x coordinate of my structure is different from the y coordinate, however their values ​​are the same. How do they differ?

While we are on it ... It should be easier ... What does the icon of the capital L mean?

Answer 1

Blue italic text means that the value of this variable (or expression) has changed since the program was last suspended.

A “L” in the green square means that c is a local variable. The “A” in the purple square means the argument of the function or method (for example, you will see this next to self ). A “V” in a green square means some other type of variable, such as an instance variable or a global variable. There may be others, but I don’t remember them.

Answer 2

"L" stands for a local variable. Take a look at the Variable Panels section of the Xcode User Guide . I would suggest that the blue font stands behind the expected value before the lines are executed or when you reach the breakpoint.