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  • Object serialization practical uses?

    - by nash
    How many software projects have you worked on used object serialization? I personally never came across a scenario where object serialization was used. One use case i can think of is, a server software storing objects to disk to save memory. Are there other types of software where object serialization is essential or preferred over a database?

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  • Can I do a "one-time" file content search in Windows Server 2008 without adding the folder to the index?

    - by G-.
    Can I search for files which contain a specific string in a folder if that folder is not in the search index? So, lets say folder 'textFiles' is not in the index. I navigate to this folder in windows explorer. I type '.ini' in the search box I want to see a result list containing only 'b.txt' FOLDER C:\textFiles\ FILE a.php CONTENT once twice thrice mice moose monkey FILE b.txt CONTENT mingle muddle middle.ini banana beer FILE c.spo CONTENT sellotape stapler phone book I do not have permission to add folders to the windows index and I do not have permission to install or run any executables that did not ship with the server or approved applications. I'd be happy with a windows native command line solution if necessary? Thanks G

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  • Best language for scripting large scale file management

    - by Dan
    The National Park Service's Natural Sounds Program collects multiple terabytes of data each year measuring soundscapes. In your opinion, what is best available scripting language to manage massive amounts of files and file types? We would like to easily design and run efficient user-friendly scripts to search for and retrieve/create copies of files that may be located in different directories according a single static hierarchy. The OS will most likely be windows. Thanks!

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  • How to properly downcast in C# with a SWIG generated interface?

    - by JG
    I've got a very large and mature C++ code base that I'm trying to use SWIG on to generate a C# interface for. I cannot change the actual C++ code itself but we can use whatever SWIG offers in the way of extending/updating it. I'm facing an issue where a function C++ is written as such: A* SomeClass::next(A*) The caller might do something like: A* acurr = 0; while( (acurr = sc->next(acurr)) != 0 ){ if( acurr isoftype B ){ B* b = (B*)a; ...do some stuff with b.. } elseif( acurr isoftype C ) ... } Essentially, iterating through a container elements that depending on their true type, do something different. The SWIG generated C# layer for the "next" function unfortunately does the following: return new A(); So the calling code in C# land cannot determine if the returned object is actually a derived class or not, it actually appears to always be the base class (which does make sense). I've come across several solutions: Use the %extend SWIG keyword to add a method on an object and ultimately call dynamic_cast. The downside to this approach, as I see it, is that this requires you to know the inheritance hierarchy. In my case it is rather huge and I see this is as a maintenance issue. Use the %factory keyword to supply the method and the derived types and have SWIG automatically generate the dynamic_cast code. This appears to be a better solution that the first, however upon a deeper look it still requires you to hunt down all the methods and all the possible derived types it could return. Again, a huge maintenance issue. I wish I had a doc link for this but I can't find one. I found out about this functionality by looking through the example code that comes with SWIG. Create a C# method to create an instance of the derived object and transfer the cPtr to the new instance. While I consider this clumsy, it does work. See an example below. public static object castTo(object fromObj, Type toType) { object retval = null; BaseClass fromObj2 = fromObj as BaseClass; HandleRef hr = BaseClass.getCPtr(fromObj2); IntPtr cPtr = hr.Handle; object toObj = Activator.CreateInstance(toType, cPtr, false); // make sure it actually is what we think it is if (fromObj.GetType().IsInstanceOfType(toObj)) { return toObj; } return retval; } Are these really the options? And if I'm not willing to dig through all the existing functions and class derivations, then I'm left with #3? Any help would be appreciated.

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  • Joomla 1.5 Media Manager sets incorrect file permissions when uploading

    - by Scott Mayfield
    Howdy all, I have a Joomla 1.5 installation running on Windows Server 2008, installed via the Web Platform Installer. When uploading images with the media manager (native uploader, not the flash bulk uploader), the files arrive on the server correctly, but are given incorrect permissions. Specifically, the IIS_IUSRS group is not given access to the file. I might be incorrect about what group/user is SUPPOSED to get access to the files, but so far, I've found that unless I give IIS_IUSRS access to the uploaded files, they won't appear on the site or in the media manager (appear as broken images). Once I give IIS_IUSRS permission to the files, they work fine. So far, all the research I've done has led me to linux specific fixes that involve either changing the umask on the server, or directly modifying the Joomla codebase to add an appropriate chmod command to the upload process, but I really don't want to modify Joomla directly. I have to believe there's a setting here somewhere that will do the job, either on the Joomla or Windows side of the equation. Any thoughts? Scott

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  • Strange behavior of move with strings

    - by Umair Ahmed
    I am testing some enhanced string related functions with which I am trying to use move as a way to copy strings around for faster, more efficient use without delving into pointers. While testing a function for making a delimited string from a TStringList, I encountered a strange issue. The compiler referenced the bytes contained through the index when it was empty and when a string was added to it through move, index referenced the characters contained. Here is a small downsized barebone code sample:- unit UI; interface uses System.SysUtils, System.Types, System.UITypes, System.Rtti, System.Classes, System.Variants, FMX.Types, FMX.Controls, FMX.Forms, FMX.Dialogs, FMX.Layouts, FMX.Memo; type TForm1 = class(TForm) Results: TMemo; procedure FormCreate(Sender: TObject); end; var Form1: TForm1; implementation {$R *.fmx} function StringListToDelimitedString ( const AStringList: TStringList; const ADelimiter: String ): String; var Str : String; Temp1 : NativeInt; Temp2 : NativeInt; DelimiterSize : Byte; begin Result := ' '; Temp1 := 0; DelimiterSize := Length ( ADelimiter ) * 2; for Str in AStringList do Temp1 := Temp1 + Length ( Str ); SetLength ( Result, Temp1 ); Temp1 := 1; for Str in AStringList do begin Temp2 := Length ( Str ) * 2; // Here Index references bytes in Result Move ( Str [1], Result [Temp1], Temp2 ); // From here the index seems to address characters instead of bytes in Result Temp1 := Temp1 + Temp2; Move ( ADelimiter [1], Result [Temp1], DelimiterSize ); Temp1 := Temp1 + DelimiterSize; end; end; procedure TForm1.FormCreate(Sender: TObject); var StrList : TStringList; Str : String; begin // Test 1 : StringListToDelimitedString StrList := TStringList.Create; Str := ''; StrList.Add ( 'Hello1' ); StrList.Add ( 'Hello2' ); StrList.Add ( 'Hello3' ); StrList.Add ( 'Hello4' ); Str := StringListToDelimitedString ( StrList, ';' ); Results.Lines.Add ( Str ); StrList.Free; end; end. Please devise a solution and if possible, some explanation. Alternatives are welcome too.

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  • Use reflection to get a list of static classes

    - by Christian
    Hi, many questions are close, but none answers my problem... How do I use reflection in C# 3.5 to get all classes which are static from an assembly. I already get all Types defined, but there is no IsStatic property. Counting 0 constructors is really slow and did not work either. Any tips or a line of code? :-) Chris

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  • Java - JPA - @Basic and @Embedded

    - by Yatendra Goel
    I am learning JPA from this tutorial. I have some confusions in understanding the following annotations: @Basic @Embedded Fields of an embeddable type default to persistent, as if annotated with @Embedded. If the fields of embeddable types defualt to persistent, then why would we need @Embedded

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  • How to set the request start time with HAProxy?

    - by Tupy
    I would like to measure the time of full request stack. The New Relic capture time of the middleware (e.g. java, python, ruby) and request time (See https://newrelic.com/docs/features/tracking-front-end-time). For this, I need to configure the X-Request-Start header as the request pass through the HAProxy load balance. The haproxy.cfg should look like: backend www balance roundrobin mode http reqadd "X-Request-Start" UNKNOWN_TIME_FUNCTION() server servername 192.168.0.1:80 weight 1 check There is a haproxy native function to replace the UNKNOWN_TIME_FUNCTION()?

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  • What is this "Change to Display" of math equations and why does it change the equation style in Word 2010?

    - by ysap
    I am writing an equation with the "new" Equation Editor in MS Word 2010 (Insert - Equation). When using one of the "large operators", for example the Sigma, with lower and upper limits, there are two styles for displaying the limits - below and above the Sigma, or to the right as super/subscripts. I am choosing the first style - limits above and below to get the standard notation, but Word formats the equation the other way. Now, the object has a bounding box with a context menu on its right. In this menu, I can select Change to Display and the equation is moved to a new line, w/o adjacent text - but, now the sigma limits appear as requested! Then, selecting Change to Inline reverts to the previous form. So, I want to know if there is away to force the requested form with an "inline" attribute? I know that I can use a MS Equation 3.0 object, but I want to remain with the new, "native" editor.

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  • Managing NSStoreType changes between debug and release builds

    - by Eimantas
    NSXMLTypeStore is used when starting Core Data backed application by default because it's good for debugging purposes. But practice dictates that developer should use either NSBinaryStoreType, NSInMemoryStoreType or NSSQLiteStoreType store types in release builds. How do you manage changes between debug and release builds? I believe that changing store type from NSXMLTypeStore to, say, NSBinaryStoreType in code on each release is kinda cumbersome.

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  • eclipse IDE won't start in ubuntu 10.04 64bit with sun-java

    - by aeischeid
    i get this error when I try to run from CLI ** (Eclipse:2318): CRITICAL **: menu_proxy_module_load: assertion `dbusproxy != NULL' failed # A fatal error has been detected by the Java Runtime Environment: # SIGSEGV (0xb) at pc=0x00007f34511a4e74, pid=2318, tid=139863603410704 # JRE version: 6.0_18-b18 Java VM: OpenJDK 64-Bit Server VM (14.0-b16 mixed mode linux-amd64 ) Derivative: IcedTea6 1.8 Distribution: Ubuntu lucid (development branch), package 6b18-1.8-0ubuntu1 Problematic frame: C [libglib-2.0.so.0+0x41e74] g_main_context_prepare+0x164 # An error report file with more information is saved as: /home/aaron/opt/eclipse/hs_err_pid2318.log # If you would like to submit a bug report, please include instructions how to reproduce the bug and visit: https://bugs.launchpad.net/ubuntu/+source/openjdk-6/ The crash happened outside the Java Virtual Machine in native code. See problematic frame for where to report the bug. # I have sun-java installed and set in my PATH: ~: echo $JAVA_HOME /usr/lib/jvm/java-6-sun/

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  • Which Wine DLLs should I *not* overwrite with the real thing?

    - by endolith
    I have a legit installation of Windows XP and dual boot with Ubuntu (currently Karmic). WineHQ says it's possible to use DLLs from a real installation of Windows in place of "DLLs that Wine does not currently implement very well". So I'd like to just create softlinks that point to all of the DLLs in my real Windows System32 folder, under the theory that this would help things function better and behave in a less buggy, more native way. But should I go as far as replacing the Wine DLLs with the real ones? If so, are there any DLLs that need to remain the way they are for compatibility with the Linux world? Which ones are safe to replace?

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  • Vim - dynamic list of open buffers in a window

    - by asfallows
    I've investigated a few ways to maintain a list of open buffers in Vim, and some of them are very good, but none of them seem to behave the way I'd like. It's very possible that nothing like what I want exists, and it can't hurt to ask. I've been using NERDTree in GVim, and I like the idea of putting the information in a slender left-hand window. I've put together a handy diagram for how I'd like my environment to look: |--------|---------------------------------------| | | | | | | |NERDTree| Windows | | | | | | | | | | |--------| | | | | | | | | List | | | of | | | Open | | | Buffers| | | | | | | | |--------|---------------------------------------| So my question is: Is there a vim-native or plugin-enabled way to maintain a list of currently open buffers and select/edit/close from that list, inside a window similar to NERDTree? I understand that this approach may be incongruous with the Vim way of doing things, and if you feel like I'm missing something about how to manage multiple files in a Vim session, please leave a comment with suggestions!

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  • Is there a way to run virt-manager on Windows?

    - by slm
    We've been using KVM for almost a year strictly on CentOS 5.x as the KVM host, with Fedora and Ubuntu workstations accessing the KVM host and its guests using virt-manager, virt-viewer, and ssh. Is anyone aware of a way to access the KVM host using virt-manager from a Windows workstation? We have one co-worker who would like to access the KVM host, from a Win7 system. EDIT #1 I'm familiar with running a X11 server on windows such as Xming, and remote displaying virt-manager from the KVM host to a windows workstation, but what I'd really like here is to know of any solutions native to windows, i.e. is there a version of virt-manager that'll run on windows.

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  • Email from an app, but not use a a pop up controller, just text inside a text box.

    - by Sam Jarman
    Hey is there any way to send whats in a text view (im trying to make a suggestion box) to my email address? example user types in the box " I think you should add twitter support" then that is sent in the background to my email address [email protected] then a message is popped up on the screen saying "suggestion sent" just an example of what i mean Any ideas, tutorial links would be greatly appreciated guys Thanks

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