Why is the Restore Purchases functionality is inconsistent?

Why is it that sometimes when a user starts up a DPS app it shows their previous purchases and sometimes it doesn't show and they have to use the Restore Purchases button? Also, why does the Restore Purchases button sometimes fail or not actually restore anything? The functionality seems to be very inconsistent. This is happening on a number of our apps ranging from v22-v23. Any insight would be helpful.

That's pretty much normal for a FW400 drive. Restore takes more time that some copy programs because of the file verification it performs.

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Are you sure that your calendar still contains entries from that long ago? Generally when you sync the iPhone through iTunes, it will only sync entries from a specific time frame. It may be there older entries have been archived and do not exist on the iPhone anymore. Other than that, I don't see any setting that allows modification to the time frame for Spotlight search.

Why is the Restore function in disk utility so slow?

I am using the Restore functionality in Disk Utility to copy my old 250GB Time Machine disk (which is now full) to a new 1.1TB disk.
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That's pretty much normal for a FW400 drive. Restore takes more time that some copy programs because of the file verification it performs.

Why is the word count function inaccurate in tables?

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Pages v5.2.2 (and probably 5.5) will total all the words in the body of a document (including those in a table) accurately in my experience. Since the Pages v5 family does not permit non-contiguous text selection, your only other way to count just words within the table is from the Statistics component of the free WordService Services package. Just select the table, and then from the Services menu, choose Statistics. The word count matches the table contents.
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There is often no rhyme or reason for the programs it offers me.
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It's up to the applications to declare what types of files they can open. They do so by storing the information in the CFBundleDocumentTypes section of the Info.plist file in the application's .app directory. If you know what you are doing, you can edit the plist file to add your own file types/extensions. Unfortunately, I don't know of a good application to do that for you (but it's not a bad idea for one, if I get the time).

Why is the Tick Count function slow when used with a .dll but fine with normal lab view code?

when using the Tick Count millisecond timer with a .dll I've written in C, I'm getting some odd timing issues.
When I code the function I want (I'll explain it below in case it helps) in LV and run it as a subVI, feeding it the Tick count as an argument, the function runs quickly, but not quite as quickly as I would like. When I feed this same subVI just an integer constant rather than the Tick Count, it takes about the same amount of time, maybe a tiny bit more on average.
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SubVi:   | 450ms | 465ms       |
.dll         | 4900ms| 75ms         |
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Hi Aaron,
Thanks for posting the code -- that made things a lot clearer for me. I believe I know what's going on here, and the good news is that it's easy to correct! (You shouldn't apologize for this though, as even an experienced LabVIEW programmer could run into a similar situation.) Let me explain...
When you set your Call Library Function Node to run in the UI Thread you're telling LabVIEW that your DLL is not Thread-safe -- this means that under no circumstances should the DLL be called from more than one place at a time. Since LabVIEW itself is inherently multithreaded the way to work with a "thread-unsafe" DLL is to run it in a dedicated thread -- in this case, the UI thread. This safety comes at a price, however, as your program will have to constantly thread-swap to call the DLL and then execute block diagram code. This thread-swapping can come with a performance hit, which is what you're seeing in your application.
The reason your "MSTick fine behavior.vi" works is that it isn't swapping threads with each iteration of the for loop -- same with the "MSTick bad behavior.vi" without the Tick Count function. When you introduce the Tick Count Function in the for loop, LabVIEW now has to swap threads every single iteration -- this is where your performance issues originate. In fact, you could reproduce the same behavior with any function (not just TIck Count) or any DLL. You could even make your "MSTick fine behavior.vi" misbehave by placing a control property node in the for loop. (Property nodes are also executed in the UI thread).
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The code is thread safe when it does not make any calls to any functions, shared libraries, or drivers that are not thread safe.
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There are also a few documents on the website that you may want to take a look at, if you want some more details on this:
Configuring the Call Library Function Node
An Overview of Accessing DLLs or Shared Libraries from LabVIEW
VI Execution Speed
I hope this helps clear-up some confusion -- best of luck with your application!
Charlie S.
Visit ni.com/gettingstarted for step-by-step help in setting up your system

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Hi,
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https://support.apple.com/en-is/HT201412
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[email protected] wrote:
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Why is the Restore Purchases functionality is inconsistent?

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