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Michael Aivaliotis

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Posts posted by Michael Aivaliotis

  1. Commenting Code

    in Development Environment (IDE)

    Posted

    QUOTE(Aristos Queue @ Jul 9 2007, 07:26 AM)

    Prior to the diagram disable and conditional disable structures in 8.2, you could just drop a case structure and wire a constant to the ? input. ... That trick still works in 8.2...

    Just for completeness, I want to remind people that if you use a case structure to comment out code AND you still want it to stay in memory, you now need to use a boolean control on the front panel set to false instead of a boolean constant. The LabVIEW compiler is smarter now and will not include code if it's inside a case structure with a boolean constant set to false.

  2. Do Queues need semaphore protection for a Read Only op?

    in Application Design & Architecture

  5. Do Queues need semaphore protection for a Read Only op?

    in Application Design & Architecture

    Posted

    QUOTE(John Rouse @ Jul 6 2007, 09:23 PM)

    The main benefit of naming queues is if you are obtaining a queue by name somewhere. If not ,then this has no benefit. Queue references don't need names.

    QUOTE(John Rouse @ Jul 6 2007, 09:23 PM)

    The whole idea is to have a memory location that is specific to the process (object) instance and only that instance. This way two or three process's can operate independently and each process can have a method for doing/updating and seperate (reentrant) methods for monitoring.

    I'm not sure I follow. What OO framework are you using? OpenGoop, LVOOP? If you create a new instance of your object then doesn't each instance already have a place to store data?

    QUOTE(John Rouse @ Jul 6 2007, 09:23 PM)

    I understand the notifier but admittedly

    the behavior of notifiers is something I seldom can think of a "use case" for in my programming.

    Whats a really good use case for a Notifier (over a queue) anyway?

    Notifiers are basically occurrences with data. usually used to "wake up" loops and at the same time pass data to them. With the release of dynamic events and event structures, they become less important however still useful sometimes.

  12. DOll Home

    in LabVIEW General

    Posted

    This will be overkill to use a motor controller. If you just want to flip a door open on a doll house, the easiest way is to use a relay. I would rig the door on a spring tension mechanism that is kept closed on a latch. Popping the latch would unlock it and the spring tension mechanism would do all the work of opening the door. You could use cheap digital IO hardware to control the relay. You used to be able to buy $50 DAQ hardware from MCCDAQ but the NI acquisition caused all their prices to go up. So much for competition. :(

  15. Lava Search SUCKS

    in Site Feedback & Support

    Posted

    QUOTE(yen @ Jun 20 2007, 10:49 AM)

    Still sucky. I was reminded of http://forums.lavag.org/Changing-XY-Graph-Plot-Area-Programmatically-t3344.html&p=13082#entry13082' target="_blank">this thread, so I tried looking for it.

    "Mel", "Kermit" or "Rogers" could not find it. In the end, I went into Google and searched for it and immediately found it.

    Is it possible the old posts are not properly indexed?

    I'm not sure. I did a search on "kermit mel" and it came right up.

  21. Microsoft Surface

    in LAVA Lounge

    Posted

    QUOTE(Ben @ Jun 18 2007, 11:07 AM)

    OK.

    I can see a positive when I look at how well I can function with the right partner. You know, the buddy who has the hammer waiting before you even ask.

    Ben

    Imagine pair programming with your boss.

    That's rough right?

    Now add to that the fact that it's Jim Kring...

    Welcome to my world! :wacko:

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