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Articles indexed Tuesday April 13 2010

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  • Favouriting things in a database - most efficient method of keeping track?

    - by a2h
    I'm working on a forum-like webapp where I'd like to allow users to favourite an item so that they can keep track of it, and also so that others can see how many times an item's been favourited. The problem is, I'm unsure on the best practices for databases, which includes this situation. I have two ideas in my head on how to do this: Add an extra column to the user table and store things like so: "|2|5|73|" Add an extra table with at least two columns, one for referencing an item, the other for referencing a user. I feel uncomfortable about going for the second method as it involves an extra table, and potentially more queries would be required. Perhaps these beliefs aren't an issue, as I have little understanding of databases beyond simply working with table layouts and basic queries.

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  • Ruby on Rails Mysterious Javascript Alert box with cookie information

    - by conorgil
    I have a problem in a Ruby on Rails app that I am working on. I have been working on the app for months and I have never had this problem before and after a bit of Google searches I think that somehow someone is trying to steal cookies with javascript. When I click on the link I get an alert box titled "the page at www.napkinboard.com says:" and contains the following message: __utmz=217223433.1270652009.59.3.utmcsr=localhost:3000|utmccn=(referral)|utmcmd=referral|utmcct=/; __utma=217223433.2133018314.1265749085.1271097412.1271125626.63; __utmc=217223433; __utmb=217223433.11.10.1271125626 I checked the database and all data associated with this 'food_item' looks completely normal and does not contain any javascript at all. How did this suddenly happen and how can I stop it? I appreciate any help. Thanks.

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  • Reporting Services SQL Server 2005 File Share Error

    - by NicholasM
    Hi, I have a problem with Reporting Services, on an XP box, trying to save subscription reports onto a Windows 7 box over the network. No matter the permissions or accounts used by reporting services it always comes back with "A logon error occurred when attempting to access the file share. The user account or password is not valid." Since this is saving reports over the network and both admin accounts and open network/file permissions to everyone were both tried so I'm left wondering if this is an issue with Reporting Services 2005 has troubles with Windows 7 over the network. Any help would be appreciated, Thanks.

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  • How to stop scrolling in a virtual (LVS_OWNERDATA) listview in LVS_REPORT mode when using changing t

    - by David L Morris
    Win32 Virtual listviews (LVS_REPORT view) created with the LVS_OWNERDATA style are supposed not to scroll when LVSICF_NOSCROLL is used in the LVM_SETITEMCOUNT message or ListView_SetItemCountEx macro, according the MSDN documentation. However, this doesn't seem work, and the list-view scrolls regardless of the use of LVSICF_NOSCROLL. In these sorts of cases, 99% of the time it is something I have done incorrectly or overlooked. But, I've now run out of options. Have I missed something?

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  • Pickling a class definition

    - by Giorgio
    Is there a way to pickle a class definition? What I'd like to do is pickle the definition (which may created dynamically), and then send it over a TCP connection so that an instance can be created on the other end. I understand that there may be dependencies, like modules and global variables that the class relies on. I'd like to bundle these in the pickling process as well, but I'm not concerned about automatically detecting the dependencies because it's okay if the onus is on the user to specify them.

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  • Reading component parameters and setting defaults

    - by donut
    I'm pulling my hair on this because it should be simple, but can't get it to do the right thing. What's the best practice way of doing the following I've created a custom component that extends <s:Label> so now the Label has additional properties color2 color3 value which can be called like this and are used in the skin. <s:CustomLabel text="Some text" color2="0x939202" color3="0x999999" value="4.5" /> If I don't supply these parameters, I'd like some defaults to be set. So far I've had some success, but it doesn't work 100% of the time, which leads me to think that I'm not following best practices when setting those defaults. I do it now like this: [Bindable] private var myColor2:uint = 0x000000; [Bindable] private var myColor3:uint = 0x000000; [Bindable] private var myValue:Number = 10.0; then in the init function, I do a variation of this to set the default myValue = hostComponent.value; myValue = (hostComponent.value) ? hostComponent.value : 4.5; Sometimes it works, sometimes it doesn't, depending on the type of variable I'm trying to set. I eventually decided to read them as Strings then convert them to the desired type, but it seems that this also works half the time.

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  • Switch to 64 bit or stay at 32 bit?

    - by Johnny
    I have a small office, and I currently use a Visual Foxpro Application that I wrote to handle all the data. It is time to buy a new server. It seems that there are problems with VFP and 64 bit operating system. Should I make the move to 64 bit and try to deal with the problems that arise, or buy a new server running the older 32 bit acrhitecture? The latter would of course require that I use Exchange 2003 instead of 2007 or 2008. Probably no big deal?

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  • What are best practices for managing related Cabal packages?

    - by Norman Ramsey
    I'm working on a dataflow-based optimization library written in Haskell. It now seems likely that the library is going to have to be split into two pieces: A core piece with minimal build dependencies; call it hoopl-core. A full piece, call it hoopl, which may have extra dependencies on packages like a prettyprinter, QuickCheck, and so on. The idea is that the Glasgow Haskell Compiler will depend only on hoopl-core, so that it won't be too difficult to bootstrap the compiler. Other compilers will get the extra goodies in hoopl. Package hoopl will depend on hoopl-core. The Debian package tools can build multiple packages from a single source tree. Unfortunately Cabal has not yet reached that level of sophistication. But there must be other library or application designers out there who have similar issues (e.g., one package for a core library, another for a command-line interface, another for a GUI interface). What are current best practices for building and managing multiple related Haskell packages using Cabal?

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  • Silverlight prism region events

    - by synergetic
    In silverlight prism application I have a region (ContentControl) and would like to remove currently active view before adding another view. I tried to use region.PropertyChanged event but it doesn't fire. I can do it in the code where I add new view, but that will scatter my code. How to achieve this? Thanks for reply.

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  • From admin to dev [closed]

    - by Terry
    Recently a friend of mine had gone from a high level NOC position to a developer. Before that he was just doing the help desk stuff. He has no degree, only the usual MIS/networking certifications and as far as I know only tinkers with code on the weekends. I can see where in some scenarios having a good understanding of configurations, packets, users, OU's, etc would be extremely beneficial to a developer. My question is this, how many full time developers started off this way? Even how many people dual wield the responsibility of developer/systems administrator/network administration?

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  • iphone maps GPS icon

    - by Alex L
    I would like to make a button that centers the map on the current GPS location. Google Maps app has that icon on bottom left. Where can I get that icon. Is it embedded in the SDK?

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  • SQLAuthority News Three Posts on Reporting T-SQL Tuesday #005

    If you are following my blog, you already know that I am more of T-SQL and Performance Tuning type of person. I do have a good understanding of Business Intelligence suit and I also do certain training sessions on the same subject. When I was writing the blog post for T-SQL Tuesday #005 Reporting, [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • SQL SERVER Configure Management Data Collection in Quick Steps T-SQL Tuesday #005

    This article was written as a response to T-SQL Tuesday #005 Reporting.The three most important components of any computer and server are the CPU, Memory, and Hard disk specification. This post talks about how to get more details about these three most important components using the Management Data Collection. Management Data Collection generates the [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How to install wget on this?

    - by Winluser
    I did download RubyStack 2.0.3 for VMWare from http://bitnami.org/files/stacks/rubystack/2.0-3… but I cannot download anything on it! It appears that all basic utilities are missing/screwed: bitnami@linux:/var/tmp$ wget -bash: wget: command not found bitnami@linux:/var/tmp$ curl curl: error while loading shared libraries: libcurl.so.4: cannot open shared obj ect file: No such file or directory bitnami@linux:/var/tmp$ man wget -bash: man: command not found bitnami@linux:/var/tmp$ sudo apt-get install wget [sudo] password for bitnami: Reading package lists… Done Building dependency tree Reading state information… Done E: Couldn’t find package wget Any ideas how can I download anything on this machine? (I don't have physical access to it)

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  • Suggestions for a site ripper?

    - by blackrobot
    I need software that will rip a site via HTTP. It needs to download the images, HTML, CSS, and JavaScript as well as organize it in a file system. Does anyone know of software that does this? Or would I be better off just writing it myself?

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  • Where did this incorrect cached DNS lookup come from?

    - by Stephen Jennings
    Somehow, I've been having a chronic issue where my computer will get an invalid DNS lookup in its cache for either of the two Exchange servers I use from Mail.app. My workplace runs one of the Exchange servers and I run the other (they are totally unrelated, hosted by different companies, etc.). The problem manifests as a certificate domain error. When it happens, I can run nslookup mail.mydomain.com and I see the incorrect IP address (usually owned by either Apple or Akamai), but if I run nslookup mail.mydomain.com 8.8.8.8, I get the correct address. My real quest is to find out why this keeps happening, and to do that, I'd like to know which server is supplying me this bad DNS entry. Is there a way to check my DNS cache to see where this bad lookup came from?

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  • +4% en 2009 malgré la crise selon le Truffle100, vaut-il mieux être un petit ou un gros éditeur pour

    +4% en 2009 malgré la crise selon le Truffle100, vaut-il mieux être un petit ou un gros éditeur de logiciels pour prospérer ? Truffle Capital (société de capital investissement), des analystes du CXP (Centre d'expertise des Progiciels) et le Syntec informatique ; publient la 6ème édition de leur Truffle 100 France. Selon ce document, "2009 a été une année particulièrement difficile" mais, malgré la crise, les éditeurs de logiciels ont été "étonnamment résilients". Si le chiffre d'affaires global est passé de 3,8 milliards (2008) à 4 milliards (2009), les profits ont pourtant baissés, passant de 7,6% à 4,3%. Et, contrairement à une croyance tenace, ce sont les gros éditeurs qui ont l...

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  • Saving custom attributes in NSAttributedString

    - by regulus6633
    I need to add a custom attribute to the selected text in an NSTextView. So I can do that by getting the attributed string for the selection, adding a custom attribute to it, and then replacing the selection with my new attributed string. So now I get the text view's attributed string as NSData and write it to a file. Later when I open that file and restore it to the text view my custom attributes are gone! After working out the entire scheme for my custom attribute I find that custom attributes are not saved for you. Look at the IMPORTANT note here: http://developer.apple.com/mac/library/DOCUMENTATION/Cocoa/Conceptual/AttributedStrings/Tasks/RTFAndAttrStrings.html So I have no idea how to save and restore my documents with this custom attribute. Any help?

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