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I just downloaded xcode 4 recently and have read the xcode transition guide, however, I am still wondering how do I get the same feature for debugger in xcode 4 like in xcode 3.2.
When I program in xcode 3.2 and run my application, if my code happened to cause a crash in the program, I could just press command+shift+y and I'll get the debugger mode appearing, which will shows which lines that it crashes. However, I can't seem to get this working for xcode 4.
I know that I can look at which line that actually causes the crash by looking at the stacktrace, however, having that functionality in xcode 3.2 really saves me time. Just wondering if anyone knows how to do this in xcode 4 as well.
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Navigate to a line in your code where you want execution to pause, then click the gutter or line number in the source editor to set a breakpoint. Xcode displays a breakpoint icon to indicate the location. Drag a breakpoint up or down to move it to another location; drag it away from the gutter to remove it.
When you run an application in Xcode, the debugger is automatically started and attached to the process of the application. Click the Run button in the top left or press Command + R. From the moment the application is up and running, we can start inspecting the process and, if necessary, debug it.
An exception breakpoint is a type of breakpoint that is created when some exception occurs in the code. On occurrence of such exception our application stops at that given condition causing the exception and we can access all variables in scope at that breakpoint.
You need to add an exception breakpoint. Select the Breakpoint Navigator, click the Add (+) button at the bottom, then choose Add Exception Breakpoint... This should cause the debugger to pause any time it encounters an exception. Note, you have to have the Breakpoints button enabled (to the right of the Scheme selector in the toolbar). Note also, in Xcode 4, Run with breakpoints enabled is synonymous with "Build and Debug" in previous versions.
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