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  • How to create a magic square in PHP?

    - by TerranRich
    I'd like to try my hand at creating a Magic Square in PHP (i.e. a grid of numbers that all add up to the same value), but I really don't know where to start. I know of the many methods that create magic square, such as starting "1" at a fixed position, then moving in a specific direction with each iteration. But that doesn't create a truly randomized Magic Square, which is what I'm aiming for. I want to be able to generate an N-by-N Magic Square of N² numbers where each row and column adds up to N(N²+1)/2 (e.g. a 5x5 square where all rows/columns add up to 65 — the diagonals don't matter). Can anybody provide a starting point? I don't want anybody to do the work for me, I just need to know how to start such a project? I know of one generator, written in Java (http://www.dr-mikes-math-games-for-kids.com/how-to-make-a-magic-square.html) but the last Java experience I had was over 10 years ago before I quickly abandoned it. Therefore, I don't really understand what the code is actually doing. I did notice, however, that when you generate a new square, it shows the numbers 1-25 (for a 5x5 square), in order, before quickly generating a fresh randomized square.

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  • A few questions about a Rails model for a simple addressbook app

    - by user284194
    I have a Rails application that lists information about local services. My objectives for this model are as follows: 1. Require the name and tag_list fields. 2. Require one or more of the tollfreephone, phone, phone2, mobile, fax, email or website fields. 3. If the paddress field has a value, then encode it with the Geokit plugin. Here is my entry.rb model: class Entry < ActiveRecord::Base validates_presence_of :name, :tag_list validates_presence_of :tollfreephone or :phone or :phone2 or :mobile or :fax or :email or :website acts_as_taggable_on :tags acts_as_mappable :auto_geocode=>{:field=>:paddress, :error_message=>'Could not geocode physical address'} before_save :geocode_paddress validate :required_info def required_info unless phone or phone2 or tollfreephone or mobile or fax or email or website errors.add_to_base "Please have at least one form of contact information." end end private def geocode_paddress #if paddress_changed? geo=Geokit::Geocoders::MultiGeocoder.geocode (paddress) errors.add(:paddress, "Could not Geocode address") if ! geo.success self.lat, self.lng = geo.lat,geo.lng if geo.success #end end end Requiring name and tag_list work, but requiring one (or more) of the tollfreephone, phone, phone2, mobile, fax, email or website fields does not. As for encoding with Geokit, in order to save a record with the model I have to enter an address. Which is not the behavior I want. I would like it to not require the paddress field, but if the paddress field does have a value, it should encode the geocode. As it stands, it always tries to geocode the incoming entry. The commented out "if paddress_changed?" was not working and I could not find something like "if paddress_exists?" that would work. Help with any of these issues would be greatly appreciated. I posted three questions pertaining to my model because I'm not sure if they are preventing each other from working. Thank you for reading my questions.

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  • How to bind a table in a dataset to a WPF datagrid in C# and XAML

    - by Jim Thomas
    I have been searching to hours for something very simple: bind a WPF datagrid to a datatable in order to see the columns at design-time. I can’t get any of the examples to work for me. Here is the C# code to populate the datatable InfoWork inside the dataset info: info = new Info(); InfoTableAdapters.InfoWorkTableAdapter adapter = new InfoTableAdapters.InfoWorkTableAdapter(); adapter.Fill(info.InfoWork); The problem is no matter how I declare ‘info’ or ‘infoWork’ Visual Studio/XAML can’t find it. I have tried: <Window.Resources> <ObjectDataProvider x:Key="infoWork" ObjectType="{x:Type local:info}" /> </Window.Resources> I have also tried this example from wpf.codeplex, but XAML doesn’t even like the “local:” keyword! <Window.Resources> <local:info x:Key="infoWork"/> </Window.Resources> There are really two main questions here: 1) How do I declare the table InfoWork in C# so that XAML can see it? I tried declaring it Public in the window class that XAML exists in with no success. 2) How do I declare the windows resource in XAML, specifcally the datatable inside the dataset? Out of curiosity, is there a reason that ItemsSource just doesn't show up as a property that be set in the properties design window?

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  • Logical file not working for SUBFILE/SETLL?

    - by user1516536
    I'm using three logical file with different Record Format where on the first subfile I'm using LF1 and LF2 where on the first subfile I cannot use *LOVAL SETLL it will give me Run Time Error. not sure why? then the program will lead me to second subfile and I'm using LF3 it seems fine. but then If I back to first subfile the subfile turn to blanks.???? why? this my subroutine for building my subfile: C CLRSR BEGSR C EVAL *IN55='0' C WRITE USQLSCTL C EVAL *IN55='1' C ENDSR C* C*BUILDING SUBFILE C BLDSR BEGSR C *LOVAL SETLL USRLGX C EVAL RECNO=0 C EXSR TMISR1 C EXSR REDSR1 C DOW NOT %EOF C IF USRID<>IDD C EXSR MVESR C EXSR DIMSR C MOVE USRID IDD C EVAL RECNO=RECNO+1 C WRITE USQLS C ENDIF C EXSR TMISR1 C EXSR REDSR1 C ENDDO C ENDSR and the related subroutine C TMISR1 BEGSR C READ USRLGX C MOVE USRTI MINTI C ENDSR C REDSR1 BEGSR C READ USRLG C MOVE USRTO MAXTO C ENDSR 6 n the LF I used is USRLG and USRLGX. where both LF refer to the same record format. but each LF has different sorted order. *record format has been RENAME on F-Spec I have this two problem which is: I only can use *LOVAL setll logical-file once only. n the result for coding above sometime it will give result for UserTimeIn some time it equals to blanks.(000000)

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  • RSS feed created with PHP only shows the title in the feed reader

    - by James Simpson
    I am using the following PHP code to generate the XML for an RSS feed, but it doesn't seem to be working correctly. No short description is displayed in the feed reader, all I see is the title of the article. Also, all of the articles say they were published at the same time. This is the first time I have tried to setup an RSS feed, so I'm sure I've made several stupid mistakes. $result = mysql_query("SELECT * FROM blog ORDER BY id DESC LIMIT 10"); $date = date(DATE_RFC822); header('Content-type: text/xml'); echo ("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"); echo ("<rss version=\"2.0\">\n"); echo ("<channel>\n"); echo ("<lastBuildDate>$date</lastBuildDate>\n"); echo ("<pubDate>$date</pubDate>\n"); echo ("<title>my website name</title>\n"); echo ("<description><![CDATA[the description]]></description>\n"); echo ("<link>http://my-domain.com</link>\n"); echo ("<language>en</language>\n"); $ch=100; while ($a = mysql_fetch_array($result)) { $headline = htmlentities(stripslashes($a['subject'])); $posturl = $a[perm_link]; $content = $a['post']; $date = date(DATE_RFC822, $a['posted']); echo ("<item>\n"); echo ("<title>$headline</title>\n"); echo ("<link>$posturl</link>\n"); echo ("<description><![CDATA[$content]]></description>\n"); echo ("<guid isPermaLink=\"true\">$posturl</guid>\n"); echo ("<pubDate>$date2</pubDate>\n"); echo ("</item>\n"); } echo ("</channel>\n"); echo ("</rss>\n");

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  • TemplateField button causing GridView Invalid Postback

    - by Carter
    Ok, so I've got a template field in a gridview that contains just a simple button... <asp:GridView ID="KeywordsGridView" AllowPaging="false" AutoGenerateColumns="false" BackColor="white" GridLines="None" HeaderStyle-CssClass="Table_Header" RowStyle-CssClass="Table_Style" runat="server"> <Columns> <asp:TemplateField> <ItemTemplate> <asp:Button runat="server" /> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="References" SortExpression="References" HeaderText="Total References" /> <asp:BoundField DataField="Keyword" SortExpression="Keyword" HeaderText="Keyword" /> </Columns> </asp:GridView> Whenever I click the button I get the error... Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. I've found a decent amount of articles referencing this issue, including a couple on SO, for example... http://stackoverflow.com/questions/228969/asp-net-invalid-postback-or-callback-argument-event-validation-is-enabled-usi and... http://stackoverflow.com/questions/103560/invalid-postback-or-callback-argument I might just be misunderstanding, but as far as I can tell they don't really help me. How do I get this to go away without setting enableEventValidation="false"?

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  • Kerberos and/or other authentication systems - One time logon for all PHP scripts

    - by devviedev
    I'm managing a set of web apps, almost exclusively written in PHP, and would like to find an authentication platform to build a role-based authorization system on top of. Also, I'd like the authentication system to be extensible to use for, for example, system services (SSH, etc.) Here are some of the main characteristics I'm looking for, in order of importance: Easy PHP implementation (storing/reading easily roles, etc.). Redundant, if possible. If an auth system goes down everyone is not locked out. Has clients for Windows and Mac. Easy web-based administration (adding/removing users/roles, changing passwords). If not, I can build an administration system without too much effort. One-time log on. I'd also like, when an auth token is issued, to store the user's IP address and use that to authorize the user for some non web-based applications. For that reason, I'd like a desktop client to issue the token and revoke tokens when, for example, the user becomes idle at their workstation. I'm thinking Kerberos might be a solution, but what are other options?

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  • weighted matching algorithm in Perl

    - by srk
    Problem : We have equal number of men and women.each men has a preference score toward each woman. So do the woman for each man. each of the men and women have certain interests. Based on the interest we calculate the preference scores. So initially we have an input in a file having x columns. First column is the person(men/woman) id. id are nothing but 0.. n numbers.(first half are men and next half woman) the remaining x-1 columns will have the interests. these are integers too. now using this n by x-1 matrix... we have come up with a n by n/2 matrix. the new matrix has all men and woman as their rows and scores for opposite sex in columns. We have to sort the scores in descending order, also we need to know the id of person related to the scores after sorting. So here i wanted to use hash table. once we get the scores we need to make up pairs.. for which we need to follow some rules. My trouble is with the second matrix of n by n/2 that needs to give information of which man/woman has how much preference on a woman/man. I need these scores sorted so that i know who is the first preferred woman/man, 2nd preferred and so on for a man/woman. I hope to get good suggestions on the data structures i use.. I prefer php or perl. Thank you in advance

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  • Compiler error when overwriting virtual methods

    - by Stefan Hubert
    Using VC71 compiler and get compiler errors, that i don't understand. Here comes the example class A { public: virtual int& myMethod() = 0; virtual const int& myMethod()const = 0; }; class B: public A { public: // generates: error C3241: 'const int &B::myMethod(void)' : this method was not introduced by 'A' virtual const int& A::myMethod() const; virtual int& A::myMethod(); }; when i switch order of both method definitions in B then I see a different compiler error: class B: public A { public: virtual const int& A::myMethod() const; // error C2556: 'const int &B::myMethod(void)' : overloaded function differs only by return type from 'int &B::myMethod(void)' // error C2373: 'B::myMethod' : redefinition; different type modifiers virtual int& A::myMethod(); }; however, if I omit the A:: stuff then i don't get any compiler error: class B: public A { public: virtual int& myMethod(); virtual const int& myMethod() const; }; So, what exactly does A:: in front of my method names and why do i see these diverse compiler errors? Any explanation welcome!

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  • Need a design pattern for representing multiple information sources

    - by hsmit
    I'm building a Java application that retrieves information from differing information sources. I'm using a sensor, a set of RecordStores and a few online web services. In the basic application all these resources are loaded by default. Some of these sources are directly read in a separate thread (load database, read sensor etc.). From this basic application some functions are started that use these sources. The classes that contain these functions (usually combining multiple sources information) are currently paramterized with a set of resources like this: AppPart a1 = new AppPart(source1, source2, source3); I could also do it like this AppPart a1 = new AppPart(this); ..where I need to make my sources public in order to read them. I'm also thinking about a kind of stage/collection to publish all sources on, e.g: public SourceCollectionStage sStage = new SourceCollectionStage(); and later: sStage.getSensor(); .. for example. What do you guys think is the best or most often used way to do this? Btw: the user interface is often implemented by the specific funtion classes, not by the main class. Should I do this in another way?

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  • Script working with mysql and php into a textarea and back

    - by Tribalcomm
    I am trying to write a custom script that will keep a list of strings in a textarea. Each line of the textarea will be a row from a table. The problem I have is how to work the script to allow for adding, updating, or deleting rows based on a submit. So, for instance, I currently have 3 rows in the database: john sue mark I want to be able to delete sue and add richard and it will delete the row with sue and insert a row for richard. My code so far is as follows: To query the db and list it in the textarea: $basearray = mysql_query("SELECT name FROM mytable ORDER BY name"); <textarea name="names" cols=6 rows=12>'); <?php foreach($basearray as $base){ echo $base->name."\n"; } ?> </textarea> After the submit, I have: <?php $namelist = $_REQUEST[names]; $newarray = explode("\n", $namelist); foreach($newarray as $name) { if (!in_array($name, $basearray)) { mysql_query(DELETE FROM mytable WHERE word='$name'"); } elseif (in_array($name, $basearray)) { ; } else { mysql_query("INSERT INTO mytable (name) VALUES ("$name")"); } } ?> Please tell me what I am doing wrong. I am not getting any functions to work when I edit the contents of the textarea. Thanks!

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  • CSS Menus having cross browser problems

    - by George
    I am trying to solve a problem with a CSS menu where the menu does not display properly in IE 6 I see that the HTML has some conditional code to make it work with different browsers but I do not understand it well enough. Can someone suggest a fix so the selected tab in order displayed without the grey breaK? Thanks! #pad { height: 140px; } .dropline { position: relative; padding-bottom: 0px; list-style-type: none; margin: 0px 0px 0px 5px; padding-left: 0px; width: 860px; padding-right: 0px; background: url(../images/menus/ulback.gif) repeat-x; height: 40px; top: 0px; list-style-image: none; padding-top: 0px; left: 5px; } .dropline TABLE { margin: -3px -10px; width: 25px; border-collapse: collapse; height: 17px; } .dropline LI { margin-bottom: 0px; float: left; } .dropline LI A { padding-bottom: 0px; line-height: 40px; padding-left: 0px; padding-right: 19px; display: block; font-family: tahoma, sans-serif; float: left; height: 40px; color: #fff; font-size: 12px; text-decoration: none; padding-top: 0px; } .dropline A { text-align: right; padding-bottom: 0px; line-height: 40px; padding-left: 0px; padding-right: 19px; font-family: tahoma, sans-serif; float: right; height: 40px; color: #fff; font-size: 12px; text-decoration: none; padding-top: 0px; } .dropline A:hover { color: yellow; } .welcomeuser { text-align: right; padding-bottom: 0px; line-height: 40px; padding-left: 20px; padding-right: 0px; font-family: tahoma, sans-serif; float: right; height: 40px; color: #fff; clear: inherit; font-size: 12px; text-decoration: none; padding-top: 0px; } .dropline LI A B { padding-bottom: 0px; padding-left: 20px; padding-right: 0px; display: block; float: left; height: 40px; cursor: pointer; padding-top: 0px; } .dropline UL { z-index: 10; border-bottom: #fff 1px solid; position: absolute; padding-bottom: 0px; list-style-type: none; margin: 0px; padding-left: 0px; width: 860px; padding-right: 0px; background: #f8f8f8; height: 25px; border-top: #ff9933 3px solid; top: 40px; list-style-image: none; padding-top: 0px; left: -9999px; } .dropline UL LI { line-height: 25px; height: 25px; } .dropline UL.right LI { float: right; } .dropline UL LI A { padding-bottom: 0px; line-height: 25px; padding-left: 10px; padding-right: 10px; height: 25px; color: #000; font-size: 11px; font-weight: bold; border-right: #e60 1px solid; padding-top: 0px; } .dropline UL LI A:hover { line-height: 25px; background: none transparent scroll repeat 0% 0%; height: 25px; color: #c60; } .dropline UL.right LI A { border-left: #e60 1px solid; border-right: 0px; } .dropline UL LI A.last { border-bottom: 0px; border-left: 0px; border-top: 0px; border-right: 0px; } .dropline :hover UL { left: 0px; } .dropline LI.current UL { z-index: 1; left: 0px; } .dropline LI.current A { line-height: 36px; background: url(../images/menus/tab_a.gif) no-repeat right top; height: 44px; } .dropline LI.current A B { line-height: 36px; background: url(../images/menus/tab_b.gif) no-repeat left top; } .dropline LI.current UL LI A { padding-bottom: 0px; line-height: 25px; padding-left: 10px; padding-right: 10px; background: none transparent scroll repeat 0% 0%; height: 25px; color: #000; padding-top: 0px; } .dropline LI.current UL LI.current_sub A { color: #c60; } .dropline LI.current UL LI A:hover { color: #c60; } <div id="top_nav"> <asp:ContentPlaceHolder ID="phTopNav" runat="server"> <!-- MENU --> <ul id="dropline" class="dropline" runat="server" style="left: -6px; top: -2px; width:1000px;" clientidmode="Static"> <li runat="server" id="Home"> <a runat="server" id="lnkHome" href="../Default.aspx" title="Go to the Home page"><b>Home</b> <!--[if gte IE 7]><!--></a> <!--<![endif]--> <!--[if lte IE 6]> <table> <tr> <td> <![endif]--><!--[if lte IE 6]> </td> </tr> </table> </a><![endif]--> </li> <li runat="server" id="ApplyNow"> <a runat="server" id="lnkEditOrder" href="../OrderChinaVisa.aspx" title="Use our Price Calculator and simultaneously begin the China Visa application process!"><b>Apply Now!</b> <!--[if gte IE 7]><!--></a> <!--<![endif]--> <!--[if lte IE 6]> <table> <tr> <td> <![endif]--><!--[if lte IE 6]> </td> </tr> </table> </a><![endif]--> </li> <li runat="server" id="CheckStatus"> <a id="lnkCheckStatus" runat="server" href="../Check_Status.aspx" title="Check on the status of a placed order"><b>Check Status</b><!--[if gte IE 7]><!--></a><!--<![endif]--> <!--[if lte IE 6]> <table> <tr> <td> <![endif]--><!--[if lte IE 6]> </td> </tr> </table> </a><![endif]--></li> <li runat="server" id="Affiliate"> <a id="lnkAffiliate" runat="server" href="../Secure/VisaActivity.aspx" title=""><b>Affiliate</b><!--[if gte IE 7]><!--></a><!--<![endif]--> <!--[if lte IE 6]> <table> <tr> <td> <![endif]--><!--[if lte IE 6]> </td> </tr> </table> </a><![endif]--></li> </ul> </asp:ContentPlaceHolder> </div>

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  • Comparing two collections for equality

    - by Crossbrowser
    I would like to compare two collections (in C#), but I'm not sure of the best way to implement this efficiently. I've read the other thread about Enumerable.SequenceEqual, but it's not exactly what I'm looking for. In my case, two collections would be equal if they both contain the same items (no matter the order). Example: collection1 = {1, 2, 3, 4}; collection2 = {2, 4, 1, 3}; collection1 == collection2; // true What I usually do is to loop through each item of one collection and see if it exists in the other collection, then loop through each item of the other collection and see if it exists in the first collection. (I start by comparing the lengths). if (collection1.Count != collection2.Count) return false; // the collections are not equal foreach (Item item in collection1) { if (!collection2.Contains(item)) return false; // the collections are not equal } foreach (Item item in collection2) { if (!collection1.Contains(item)) return false; // the collections are not equal } return true; // the collections are equal However, this is not entirely correct, and it's probably not the most efficient way to do compare two collections for equality. An example I can think of that would be wrong is: collection1 = {1, 2, 3, 3, 4} collection2 = {1, 2, 2, 3, 4} Which would be equal with my implementation. Should I just count the number of times each item is found and make sure the counts are equal in both collections? The examples are in some sort of C# (let's call it pseudo-C#), but give your answer in whatever language you wish, it does not matter. Note: I used integers in the examples for simplicity, but I want to be able to use reference-type objects too (they do not behave correctly as keys because only the reference of the object is compared, not the content).

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  • MVC UI with Mock Controllers?

    - by Jaimal Chohan
    I'm working with Aspnet MVC 2 (R2) and at the same time playing about with the whole alt.net stack. One of this things I would like to be able todo is basically write my Views, and be able to interact with them without having to write the controller logic. E.g. I have a view that displays a list of orders and I can click on an order which redirects to another view where I can edit it, but I don't want to get into the nitty gritty of writing the code to actually get a list of orders, or update an existing ordes. I want to do so I can write UI tests in WaitN/AOT/Selenium without having to worry about whats happening underneath, and also It would help drive my controller logic on a need basis as opposed to guess work based of of the supplied screenshots How do you guys accomplish this atm? Can you provide links ot useful blog posts/tools/framework/articles with information on how to accomplish this p.s. I primarly use Rhino Mocks & NUnit but can happliy change to other tools if they support the above better.

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  • How to avoid game rendering component circular references?

    - by CodexArcanum
    I'm working on a simple game design, and I wanted to break up my game objects into more reusable components. But I'm getting stuck on how exactly to implement the design I have in mind. Here's an example: I have a Logger object, whose job is simply to store a list of messages and render them to screen. You know, logging. Originally the Logger just held the list, and the game loop rendered it's contents. Then I moved the rendering logic into the Logger.Draw() method, and now I want to move it further into a LoggerRenderer object. In effect, I want to have the game loop call RenderAll, which will then call Logger.Render, which will in turn call the LoggerRenderer.Render and finally output the text. So the Logger needs to contain a Renderer object, but the Renderer needs access to the Logger's state (the message queue) in order to render. How do I resolve that? Should I be passing in the message queue and other state information explicitly to the Render method? Or should the game loop be calling the Renderer directly and it links back to the logger, but the RenderAll method never actually sees the logger object itself? This feels kind of like Command pattern, but I'm botching it up terribly.

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  • Three Checkboxes, One must be selected to enable submit button, needs Jquery?

    - by Jamie
    I have between 1-three checkboxes and by default they are all disabled. In order for the submit button to be active ove checkbox minumum must be selected. Can someone help me with a jquery snippet to achieve this? My markup looks like this and the site used jquery 1.42. Please and thankyou! <form action="/cart/add" method="post" id="pform"> <h3 class="goudy">Make your selection:</h3> <ul id="variants"> <li> <input type="checkbox" name="id[]" value="39601622" id="radio_39601622" style="vertical-align: middle;" class="required" /> <label for="radio_39601622[]">$38.00 - Original Antique Photo</label> </li> <li> <input type="checkbox" name="id[]" value="39601632" id="radio_39601632" style="vertical-align: middle;" class="required" /> <label for="radio_39601632[]">$8.99 - SCAN</label> </li> <li> <input type="checkbox" name="id" value="39777962" id="radio_39777962" style="vertical-align: middle;" class="required" /> <label for="radio_39777962">$2.99 - Rigid Sleeve</label> </li> </ul> <div class="buttons clearfix"> <input type="image" src="../images/add-to-cart.png" name="add" value="Add to Cart" id="add" class="send-to-cart" /> </div> </form>

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  • making arrays from tab-delimited text file column

    - by absolutenewbie
    I was wondering if anyone could help a desperate newbie with perl with the following question. I've been trying all day but with my perl book at work, I can't seem to anything relevant in google...or maybe am genuinely stupid with this. I have a file that looks something like the following: Bob April Bob April Bob March Mary August Robin December Robin April The output file I'm after is: Bob April April March Mary August Robin December April So that it lists each month in the order that it appears for each person. I tried making it into a hash but of course it wouldn't let me have duplicates so I thought I would like to have arrays for each name (in this example, Bob, Mary and Robin). I'm afraid to upload the code I've been trying to tweak because I know it'll be horribly wrong. I think I need to define(?) the array. Would this be correct? Any help would be greatly appreciated and I promise I will be studying more about perl in the meantime. Thank you for your time, patience and help. #!/usr/bin/perl -w while (<>) { chomp; if (defined $old_name) { $name=$1; $month=$2; if ($name eq $old_name) { $array{$month}++; } else { print "$old_name"; foreach (@array) { push (@array, $month); print "\t@array"; } print "\n"; @array=(); $array{$month}++; } } else { $name=$1; $month=$2; $array{month}++; } $old_name=$name; } print "$old_name"; foreach (@array) { push (@array, $month); print "\t@array"; } print "\n";

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  • Postgres update rule returning number of rows affected

    - by Lithium
    I have a view table which is a union of two seperate tables (say Table _A and Table _B). I need to be able to update a row in the view table, and it seems the way to do this was through a 'view rule'. All entries in the view table have seperate id's, so an id that exists in table _A won't exist in table _B. I created the following rule: CREATE OR REPLACE RULE view_update AS ON UPDATE TO viewtable DO INSTEAD ( UPDATE _A SET foo = false WHERE old.id = _A.id; UPDATE _B SET foo = false WHERE old.id = _B.id; ); If I do an update on table _B it returns the correct number of rows affected (1). However if I update table _A it returns (0) rows affected even though the data was changed. If I swap out the order of the updates then the same thing happens, but in reverse. How can I solve this problem so that it returns the correct number of rows affected. Thanks.

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  • What's a good way of building up a String given specific start and end locations?

    - by Michael Campbell
    (java 1.5) I have a need to build up a String, in pieces. I'm given a set of (sub)strings, each with a start and end point of where they belong in the final string. Was wondering if there were some canonical way of doing this. This isn't homework, and I can use any licensable OSS, such as jakarta commons-lang StringUtils etc. My company has a solution using a CharBuffer, and I'm content to leave it as is (and add some unit tests, of which there are none (?!)) but the code is fairly hideous and I would like something easier to read. As I said this isn't homework, and I don't need a complete solution, just some pointers to libraries or java classes that might give me some insight. The String.Format didn't seem QUITE right... I would have to honor inputs too long and too short, etc. Substrings would be overlaid in the order they appear (in case of overlap). As an example of input, I might have something like: String:start:end FO:0:3 (string shorter than field) BAR:4:5 (String larger than field) BLEH:5:9 (String overlays previous field) I'd want to end up with FO BBLEH 01234567890

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  • Which non-clustered index should I use?

    - by Junior Mayhé
    Here I am studying nonclustered indexes on SQL Server Management Studio. I've created a table with more than 1 million records. This table has a primary key. CREATE TABLE [dbo].[Customers]( [CustomerId] [int] IDENTITY(1,1) NOT NULL, [CustomerName] [varchar](100) NOT NULL, [Deleted] [bit] NOT NULL, [Active] [bit] NOT NULL, CONSTRAINT [PK_Customers] PRIMARY KEY CLUSTERED ( [CustomerId] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] ) ON [PRIMARY] This is the query I'll be using to see what execution plan is showing: SELECT CustomerName FROM Customers Well, executing this command with no additional non-clustered index, it leads the execution plan to show me: I/O cost = 3.45646 Operator cost = 4.57715 Now I'm trying to see if it's possible to improve performance, so I've created a non-clustered index for this table: 1) First non-clustered index CREATE NONCLUSTERED INDEX [IX_CustomerID_CustomerName] ON [dbo].[Customers] ( [CustomerId] ASC, [CustomerName] ASC )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] GO Executing again the select against Customers table, the execution plan shows me: I/O cost = 2.79942 Operator cost = 3.92001 It seems better. Now I've deleted this just created non-clustered index, in order to create a new one: 2) First non-clustered index CREATE NONCLUSTERED INDEX [IX_CustomerIDIncludeCustomerName] ON [dbo].[Customers] ( [CustomerId] ASC ) INCLUDE ( [CustomerName]) WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY] GO With this new non-clustered index, I've executed the select statement again and the execution plan shows me the same result: I/O cost = 2.79942 Operator cost = 3.92001 So, which non-clustered index should I use? Why the costs are the same on execution plan for I/O and Operator? Am I doing something wrong or this is expected? thank you

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  • Force compile-time linking of all classes in a SWC

    - by aaaidan
    Using Flash CS4, I am making a game that has a dozen or so sounds and a couple of music tracks. To cut down on publish/compile time, I have moved the sounds and music into an (external) SWC, which is located in a "Library Path" for the project. This works, but with a caveat... Until before I externalised the assets, I had been dynamically instantiating the Sound objects of the embedded sound by getting their classes with getDefinitionByName. // something like... var soundSubClass:Class = Class(getDefinitionByName(soundClassName)); var mySound:Sound = new soundSubClass(); But now that they're located in an external SWC, I need to have "concrete" references to the classes in order to load them like this, otherwise they are not included in the published SWF, and there is a runtime error when getDefinitionByName tries to get a class that doesn't exist. So, my question: in Flash Professional CS4, is there any way to force a library's assets to be included, regardless of whether they are statically linked? FlashDevelop has a compiler option "SWC Include Libraries", which is exactly what I want, and is distinct from the "SWC Libraries" option. The description of the "SWC Include Libraries" option is "Links all classes inside a SWC file to the resulting application SWF file, regardless of whether or not they are used." (Also, it's important to me that all the assets are contained within the one compiled SWF. Linking at runtime isn't what I'm after.)

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  • Convert ADO.Net EF Connection String To Be SQL Azure Cloud Connection String Compatible!?

    - by Goober
    The Scenario I have written a Silverlight 3 Application that uses an SQL Server database. I'm moving the application onto the Cloud (Azure Platform). In order to do this I have had to setup my database on SQL Azure. I am using the ADO.Net Entity Framework to model my database. I have got the application running on the cloud, but I cannot get it to connect to the database. Below is the original localhost connection string, followed by the SQL Azure connection string that isn't working. The application itself runs fine, but fails when trying to retrieve data. The Original Localhost Connection String <add name="InmZenEntities" connectionString="metadata=res://*/InmZenModel.csdl|res://*/InmZenModel.ssdl|res://*/InmZenModel.msl; provider=System.Data.SqlClient; provider connection string=&quot; Data Source=localhost; Initial Catalog=InmarsatZenith; Integrated Security=True; MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" /> The Converted SQL Azure Connection String <add name="InmZenEntities" connectionString="metadata=res://*/InmZenModel.csdl|res://*/InmZenModel.ssdl|res://*/InmZenModel.msl; provider=System.Data.SqlClient; provider connection string=&quot; Server=tcp:MYSERVER.ctp.database.windows.net; Database=InmarsatZenith; UserID=MYUSERID;Password=MYPASSWORD; Trusted_Connection=False; MultipleActiveResultSets=True&quot;" providerName="System.Data.EntityClient" /> The Question Anyone know if this connection string for SQL Azure is correct? Help greatly appreciated.

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  • How do I escape ampersands in batch files?

    - by Peter Mortensen
    How do I escape ampersands in a batch file (or from the Windows command line) in order to use the start command to open web pages with ampersands in the URL? Double quotes will not work with start; this starts a new command line window instead. Update 1: Wael Dalloul's solution works. In addition, if there are URL encoded characters (e.g. space is encoded as %20) in the URL and it is in a batch file then '%' must be encoded as '%%'. This is not the case in the example. Example, from the command line (CMD.EXE): start http://www.google.com/search?client=opera&rls=en&q=escape+ampersand&sourceid=opera&ie=utf-8&oe=utf-8 will result in http://www.google.com/search?client=opera being opened in the default browser and these errors in the command line window: 'rls' is not recognized as an internal or external command, operable program or batch file. 'q' is not recognized as an internal or external command, operable program or batch file. 'sourceid' is not recognized as an internal or external command, operable program or batch file. 'ie' is not recognized as an internal or external command, operable program or batch file. 'oe' is not recognized as an internal or external command, operable program or batch file. Platform: Windows XP 64 bit SP2.

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  • How to set SQL_BIG_SELECTS = 1 from VB(legacy ASP) with ADODB environment?

    - by conecon
    I encountered The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET SQL_MAX_JOIN_SIZE=# if the SELECT is okay error with my ASP code. ASP code has server side ADODB connection with MySQL and connection seems not be able to execute multiple query. How to implement SQL_BIG_SELECTS = 1 in my code? Set obj_db = Server.CreateObject("ADODB.Connection") Session("ConnectionString") = "dsn=dsn1016189_mysql;uid=apns;pwd=mypassword;DATABASE=mydb;APP=ASP Script;STMT=SET CHARACTER SET SJIS" obj_db.Open Session("ConnectionString") Set obj_ret = Server.CreateObject("ADODB.Recordset") obj_ret.CursorLocation = 3 and executing SQL... SQL_BIG_SELECTS = 1; SELECT pu.login_id, pu.p_login_id, pu.first_name, pu.last_name, pu.sex, pu.is_admin, pu.attendance, pu.invited, pu.reason, qaa1.answer AS qaa1_answer, COUNT(pu2.p_login_id) AS companion FROM party_user pu LEFT OUTER JOIN party_user pu2 ON pu2.p_login_id = pu.login_id LEFT OUTER JOIN qa_answer qaa1 ON qaa1.login_id = pu.login_id AND qaa1.party_id = pu.party_id AND qaa1.sort_num = '1' WHERE pu.party_id = '92' AND pu.p_login_id = '' GROUP BY pu.login_id, pu.p_login_id, pu.first_name, pu.last_name, pu.sex, pu.is_admin, pu.attendance, pu.reason, qaa1.answer, pu.invited ORDER BY pu.login_id ASC; I can't execute multiple query and above query become error. You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT pu.login_id, pu.p_login_id, pu.first_name, pu.last_name, pu.sex, pu.is_ad' at line 1

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  • How to keep my topmost window on top?

    - by Misko Mare
    I will first explain why I need it, because I anticipate that the first response will be "Why do you need it?". I want to detect when the mouse cursor is on an edge of the screen and I don't want to use hooks. Hence, I created one pixel wide TOPMOST invisible window. I am using C++ on Win XP, so when the window is created (CreateWindowEx(WS_EX_TOPMOST | WS_EX_TRANSPARENT ...) everything works fine. Unfortunately, if a user moves another topmost window, for example the taskbar over my window, I don't get mouse movements. I tried to solve this similarly to approaches suggested in: How To Keep an MDI Window Always on Top I tried to check for Z-order of my topmost window in WM_WINDOWPOSCHANGED first with case WM_WINDOWPOSCHANGED : WINDOWPOS* pWP = (WINDOWPOS*)lParam; yet pWP-hwnd points to my window and pWP-hwndInsertAfter is 0, which should mean that my window is on the top of the Z, even though it is covered with the taskbar. Then I tried: case WM_WINDOWPOSCHANGED : HWND topWndHndl = GetNextWindow(myHandle, GW_HWNDPREV) GetWindowText(topWndHndl, pszMem, cTxtLen + 1); and I'll always get that the "Default IME" window is on top of my window. Even if try to bring my window to the top with SetWindowPos() or BringWindowToTop (), "Default IME" stays on the top. I don't know what is "Default IME" and how to detect if the taskbar is on top of my window. So my question is: How to detect that my topmost window is not the top topmost window anymore and how to keep it on the top? P.S. I know that a "brute force" approach of periodically bringing my window to the top works, yet is ugly and could have some unwanted inference with the notification window for example. (Bringing my window to the top will hide the notification window.) Thank you on your time and suggestions!

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