On Sun, Jun 28, 2009 at 4:12 PM, Tommy Nordgren<tommy.nordg...@comhem.se> wrote:
> Are there any compiler flags you can provide when compiling Objective C
> code,
> that causes an exception to be triggered when a category implements a method
> that is already implemented in the target class?

Not an exception, but you can get the runtime to log any replaced
methods by setting the OBJC_PRINT_REPLACED_METHODS environment
variable when running your app. This and other environment variables
can be found by running an ObjC program with the OBJC_HELP enviroment
variable set. This will print out a brief bit of documentation about
all the debugging variables supported by the runtime.

Mike
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