In Xcode 3, the line number of the current cursor location was displayed. I don't see this in Xcode 4. Is there a setting that will turn it on? Or a keypress that will give it to me?xcode
In Preferences->Text Editing-> Show: Line numbers you can enable the line numbers on the left hand side of the file.
Sure, XCode->Preferences and turn on Show line numbers.
1) go to xcode preference by clicking on xcode on left hand side uper corner.
2) then select Text Editing
3) then select Show: Line numbers and click on check box for enable it.
4) close it.
5) you will see the line number in xcode.
If you don't want line numbers shown all the time another way to find the line number of a piece of code is to just click in the left-most margin and create a breakpoint (a small blue arrow appears) then go to the breakpoint navigator (⌘7) where it will list the breakpoint with its line number. You can delete the breakpoint by right clicking on it.