Accessing objects two ways in an object hierarchy

I have a relationship similar to the following model in my program: http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaFundamentals/Art/object_graph.gif To access the objects corresponding to the collection of "employees" from the "department", I just iterate through the collection

Re: Verify that only one launchd-started process runs at a time

Thanks, this was exacly what I was looking for. I didn't know where to start with semaphores on OSX. Works like a charm. /P 26 dec 2008 kl. 02.10 skrev Ken Thomases: On Dec 25, 2008, at 6:22 PM, Jerry Krinock wrote: On 2008 Dec, 25, at 15:29, Per Ohlson wrote: I would like to make

Verify that only one launchd-started process runs at a time

I have a small daemon which i scheduled to run at different times of the day by using launchd-plists with StartCalendarInterval. This daemon is using a USB-device which only handles one call at a time. Sometimes, the daemon is scheduled to run twice at the same time. I would like to make shure

Scheduling and launchd

I'm trying to schedule multiple events that are supposed to trigger an application at different hours on different days. My current idea is to use launchd with each event as plist in Library/LaunchAgents. However, is it a bad idea to spam the LaunchAgents-folder? Can I use multiple dates in the sa