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David Heffernan

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Everything posted by David Heffernan

  1. David Heffernan

    10.4.1 Released today

    David Heffernan replied to Darian Miller's topic in Tips / Blogs / Tutorials / Videos

    Lightweight MREW sounds useful. One does wonder if it works, having experienced the monitor debacle.
  2. David Heffernan

    Securing your data over time

    David Heffernan posted a topic in General Help

    You should have all your work in revision control. Then when your drive fails you still have it. Not to mention all the other benefits.
  3. David Heffernan

    does a class property or a variable exist

    David Heffernan replied to alnickels's topic in General Help

    These things are determined at compile time. You can't declare either at run time. So why do you feel this a run time issue?
  4. David Heffernan
    FWIW, I have always installed Delphi, even as far back as D6 under program files. Once Vista and UAC arrived, I recall having to add a couple of permissive ACLs onto a couple of files, but it was pretty trivial. And had the benefit of keeping my machine nice and tidy. I understand that people have different preferences, but I just wanted to point out that installing under program files is not as terrifying as it can be made out.
  5. David Heffernan
    UAC, virtualization, etc. was introduced with Vista in 2006
  6. David Heffernan
    Doesn't virtualization take care of all of this? Or does the D7 IDE have an app manifest?
  7. David Heffernan
    What does it write there?
  8. David Heffernan

    Unwanted Windows XP Manifest inserted

    David Heffernan replied to timfrost's topic in RTL and Delphi Object Pascal

    This topic is not about what is considered the right way to handle manifests. It's about tracking down the inclusion of a resource whose origin is not immediately obvious.
  9. David Heffernan

    Unwanted Windows XP Manifest inserted

    David Heffernan replied to timfrost's topic in RTL and Delphi Object Pascal

    XPMan is still there: http://docwiki.embarcadero.com/Libraries/Sydney/en/Vcl.XPMan.TXPManifest
  10. David Heffernan

    Unwanted Windows XP Manifest inserted

    David Heffernan replied to timfrost's topic in RTL and Delphi Object Pascal

    The unit is named XPMan. Search for that.
  11. David Heffernan

    Boolean short-circuit with function calls

    David Heffernan replied to Mike Torrettinni's topic in Algorithms, Data Structures and Class Design

    You still need comments for future readers.
  12. David Heffernan

    Delete FastMM4 MemoryManager_EventLog.txt

    David Heffernan replied to Alberto Paganini's topic in Delphi Third-Party

    It's automatically deleted here. Try setting up a brand new app and check how it behaves there.
  13. David Heffernan

    TEdit with enhanced keyboard support?

    David Heffernan replied to Edwin Yip's topic in VCL

    I use SHAutoComplete and don't have any issues.
  14. David Heffernan

    TEdit with enhanced keyboard support?

    David Heffernan replied to Edwin Yip's topic in VCL

    Why don't you use the native Win32 TEdit but just enable CTRL+BACKSPACE? Call SHAutoComplete(WindowHandle, SHACF_AUTOAPPEND_FORCE_OFF or SHACF_AUTOSUGGEST_FORCE_OFF); in an overridden CreateWnd. Use an interposer, or some other mechanism to get this code to run.
  15. David Heffernan

    Why is TList freed in this code?

    David Heffernan replied to John Kouraklis's topic in General Help

    Only cool for the users. Mind-bending if it's your job to implement it!
  16. David Heffernan

    Why is TList freed in this code?

    David Heffernan replied to John Kouraklis's topic in General Help

    Also the owned objects are destroyed when items are removed from the dictionary. This is the same ownership model as the classic TObjectList.
  17. David Heffernan
    When you said that I thought you meant that you were not able to call libopenblas from Delphi. But then you later said that you were doing that. So I still don't understand that statement. Notwithstanding, I am sure you will be able to work out which library is best suited to your needs.
  18. David Heffernan
    I'd be astounded if that was not the case. Eigen has a very good reputation. Certainly for basic matrix arithmetic performance is excellent. And I'd be astonished if it could not match openblas for eigensolves. Then I don't know why you asked if it was possible to do something that you were already doing.
  19. David Heffernan
    That isn't it. Not true. C++ compilers can perform just as well. Possible. But I doubt it. I bet you are asking different questions, and not comparing like with like. Quite simple to call libopenblas from delphi. I do just that.
  20. David Heffernan
    OK, I see. We'll, I don't really know. It seems odd because they use the same algorithm as I understand it. I imagine there is a good explanation. But there'd need to be more detail.
  21. David Heffernan
    Your lapack call does not calculate eigen vectors. The eigen call does.
  22. David Heffernan
    That would be surprising. I wouldn't want to comment without seeing what options you used when calling the functions.
  23. David Heffernan

    Enums and generics

    David Heffernan replied to Mike Torrettinni's topic in Algorithms, Data Structures and Class Design

    Unless all of your enumerated types have the same names, it seems like you'd have to provide names for each type.
  24. David Heffernan

    Enums and generics

    David Heffernan replied to Mike Torrettinni's topic in Algorithms, Data Structures and Class Design

    You have misunderstood me. The attribute is independent of the type. Therefore it can be used with any type.
  25. David Heffernan

    Enums and generics

    David Heffernan replied to Mike Torrettinni's topic in Algorithms, Data Structures and Class Design

    As you can see from the code, the attribute class is called NamesAttribute and is independent from the type. Otherwise the whole thing would be pointless.
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