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• why unsigned int 0xFFFFFFFF is equal to int -1?

  - by conejoroy

  perhaps it's a very stupid question but I'm having a hard time figuring this out =) in C or C++ it is said that the maximum number a size_t (an unsigned int data type) can hold is the same as casting -1 to that data type. for example see http://stackoverflow.com/questions/1420982/invalid-value-for-sizet Why?? I'm confused.. I mean, (talking about 32 bit ints) AFAIK the most significant bit holds the sign in a signed data type (that is, bit 0x80000000 to form a negative number). then, 1 is 0x00000001.. 0x7FFFFFFFF is the greatest positive number a int data type can hold. then, AFAIK the binary representation of -1 int should be 0x80000001 (perhaps I'm wrong). why/how this binary value is converted to anything completely different (0xFFFFFFFF) when casting ints to unsigned?? or.. how is it possible to form a binary -1 out of 0xFFFFFFFF? I have no doubt that in C: ((unsigned int)-1) == 0xFFFFFFFF or ((int)0xFFFFFFFF) == -1 is equally true than 1 + 1 == 2, I'm just wondering why. thanks!

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• log4net: log information into different log files

  - by Daoming Yang

  I have the following configurations in my web.config file, but how can I log the information into data.txt and general.txt separately in C#? Could anyone provide some sample code for me? <appender name="GeneralLog" type="log4net.Appender.RollingFileAppender"> <file value="App_Data/Logs/general.txt" /> <appendToFile value="true" /> <maximumFileSize value="2MB" /> <rollingStyle value="Size" /> <maxSizeRollBackups value="5" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d{HH:mm:ss.fff} [%t] %-5p %c - %m%n" /> </layout> </appender> <appender name="DataLog" type="log4net.Appender.RollingFileAppender"> <file value="App_Data/Logs/data.txt" /> <appendToFile value="true" /> <maximumFileSize value="2MB" /> <rollingStyle value="Size" /> <maxSizeRollBackups value="5" /> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="%d{HH:mm:ss.fff} [%t] %-5p %c - %m%n" /> </layout> </appender>

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• sql foreign keys

  - by Paul Est

  I was create tables with the syntax in phpmyadmin: DROP TABLE IF EXISTS users; DROP TABLE IF EXISTS info; CREATE TABLE users ( user_id int unsigned NOT NULL auto_increment, email varchar(100) NOT NULL default '', pwd varchar(32) NOT NULL default '', isAdmin int(1) unsigned NOT NULL, PRIMARY KEY (user_id) ) TYPE=INNODB; CREATE TABLE info ( info_id int unsigned NOT NULL auto_increment, first_name varchar(100) NOT NULL default '', last_name varchar(100) NOT NULL default '', address varchar(300) NOT NULL default '', zipcode varchar(100) NOT NULL default '', personal_phone varchar(100) NOT NULL default '', mobilephone varchar(100) NOT NULL default '', faxe varchar(100) NOT NULL default '', email2 varchar(100) NOT NULL default '', country varchar(100) NOT NULL default '', sex varchar(1) NOT NULL default '', birth varchar(1) NOT NULL default '', email varchar(100) NOT NULL default '', PRIMARY KEY (info_id), FOREIGN KEY (email) REFERENCES users(email) ON UPDATE CASCADE ON DELETE CASCADE ) TYPE=INNODB; But shows the error "#1064 - 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 'TYPE=INNODB' at line 11 " If i remove the TYPE=INNODB in the end of create the tables, it will show the error "#1005 - Can't create table 'curriculo.info' (errno: 150) ".

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• Game of life in F# with accelerator

  - by jpalmer

  I'm trying to write life in F# using accelerator v2, but for some odd reason my output isn't square despite all my arrays being square - It appears that everything but a rectangular area in the top left of the matrix is being set to false. I've got no idea how this could be happening as all my operations should treat the entire array equally. Any ideas? open Microsoft.ParallelArrays open System.Windows.Forms open System.Drawing type IPA = IntParallelArray type BPA = BoolParallelArray type PAops = ParallelArrays let RNG = new System.Random() let size = 1024 let arrinit i = Array2D.init size size (fun x y -> i) let target = new DX9Target() let threearr = new IPA(arrinit 3) let twoarr = new IPA(arrinit 2) let onearr = new IPA(arrinit 1) let zeroarr = new IPA(arrinit 0) let shifts = [|-1;-1|]::[|-1;0|]::[|-1;1|]::[|0;-1|]::[|0;1|]::[|1;-1|]::[|1;0|]::[|1;1|]::[] let progress (arr:BPA) = let sums = shifts //adds up whether a neighbor is on or not |> List.fold (fun (state:IPA) t ->PAops.Add(PAops.Cond(PAops.Rotate(arr,t),onearr,zeroarr),state)) zeroarr PAops.Or(PAops.CompareEqual(sums,threearr),PAops.And(PAops.CompareEqual(sums,twoarr),arr)) //rule for life let initrandom () = Array2D.init size size (fun x y -> if RNG.NextDouble() > 0.5 then true else false) type meform () as self= inherit Form() let mutable array = new BoolParallelArray(initrandom()) let timer = new System.Timers.Timer(1.0) //redrawing timer do base.DoubleBuffered <- true do base.Size <- Size(size,size) do timer.Elapsed.Add(fun _ -> self.Invalidate()) do timer.Start() let draw (t:Graphics) = array <- array |> progress let bmap = new System.Drawing.Bitmap(size,size) target.ToArray2D array |> Array2D.iteri (fun x y t -> if not t then bmap.SetPixel(x,y,Color.Black)) t.DrawImageUnscaled(bmap,0,0) do self.Paint.Add(fun t -> draw t.Graphics) do Application.Run(new meform())

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• JPA/Hibernate query with class name?

  - by Petteri Hietavirta

  In this example com.test.Cat extends com.test.Animal and there is no field DB in CAT table of com.test.Cat explicitly defining its type (it wasn't me). When I query my animals from DB I get a collection of Animals. It is possible to sort them by class name: order by r.class but is there a way to use class name as a criteria? For example I would like to get all animals expect dogs. But no luck - even this does not work: where r.class = ? (String "ccc.test.Cat") as I get an exception: Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer at org.hibernate.type.IntegerType.set(IntegerType.java:64) at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:154) at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:136) at org.hibernate.param.PositionalParameterSpecification.bind(PositionalParameterSpecification.java:62) at org.hibernate.loader.hql.QueryLoader.bindParameterValues(QueryLoader.java:514) at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1589) at org.hibernate.loader.Loader.doQuery(Loader.java:696) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:259) at org.hibernate.loader.Loader.doList(Loader.java:2228) at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2125) at org.hibernate.loader.Loader.list(Loader.java:2120) at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:401) at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:361) at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:196) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1148) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:102) at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:67)

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• Display a tree dijit using zend framework

  - by churris43

  I am trying to display a tree of categories and subcategories by using dijits with zend framework. Haven't been able to find a good example. This is what I've got: Basically I got the following code as my action: class SubcategoriesController extends Zend_Controller_Action{ ..... public function loadtreeAction() { Zend_Dojo::enableView($this->view); Zend_Layout::getMvcInstance()->disableLayout(); //Creating a sample tree of categories and subcategories $a["cat1"]["id"] = "id1"; $a["cat1"]["name"] = "Category1"; $a["cat1"]["type"] = "category"; $subcat1 = array("id" => "Subcat1","name" => "Subcategory1" , "type" => "subcategory"); $subcat2 = array("id" => "Subcat12","name" => "Subcategory12" , "type" => "subcategory"); $a["cat1"]["children"] = array($subcat1,$subcat2); $treeObj = new Zend_Dojo_Data('id', $a); $treeObj->setLabel('name'); $this->view->tree = $treeObj->toJson(); } .... } And on my view: <?php $this->dojo()->requireModule('dojo.data.ItemFileReadStore'); $this->dojo()->requireModule('dijit.Tree'); $this->dojo()->requireModule('dojo.parser'); ?> <div dojoType="dojo.data.ItemFileReadStore" url="/Subcategories/loadtree" jsId="store"></div> <div dojoType="dijit.tree.ForestStoreModel" jsId="treeModel" store="store" rootId="root" rootLabel="List of Categories" childrenAttrs="children" query="{type:'category'}"></div> <div dojoType="dijit.Tree" model="treeModel" labelAttrs="ListOfCategories"></div> It doesn't even seem to try to load the tree at all. Any help is appreciated

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• max file upload size change in web.config

  - by Christopher Johnson

  using .net mvc 3 and trying to increase the allowable file upload size. This is what I've added to web.config: <system.webServer> <validation validateIntegratedModeConfiguration="false"/> <modules runAllManagedModulesForAllRequests="true"> <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah" preCondition="managedHandler" /> <add name="ErrorMail" type="Elmah.ErrorMailModule, Elmah" preCondition="managedHandler" /> <add name="ErrorFilter" type="Elmah.ErrorFilterModule, Elmah" preCondition="managedHandler" /> </modules> <handlers> <add name="Elmah" path="elmah.axd" verb="POST,GET,HEAD" type="Elmah.ErrorLogPageFactory, Elmah" preCondition="integratedMode" /> </handlers> <security> <requestFiltering> <requestLimits maxAllowedContentLength="104857600"/> </requestFiltering> </security> *ignore the elmah stuff. it's still not allowing file sizes larger than 50MB and this should allow up to 100MB no? any ideas?

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• Will the following NHibernate interface mapping work?

  - by Ben Aston

  I'd like to program against interfaces when working with NHibernate due to type dependency issues within the solution I am working with. SO questions such as this indicate it is possible. I have an ILocation interface and a concrete Location type. Will the following work? HBM mapping: <class name="ILocation" abstract="true" table="ILocation"> <id name="Id" type="System.Guid" unsaved-value="00000000-0000-0000-0000-000000000000"> <column name="LocationId" /> <generator class="guid" /> </id> <union-subclass table="Location" name="Location"> <property name="Name" type="System.String"/> </union-subclass> </class> Detached criteria usage using the interface: var criteria = DetachedCriteria.For<ILocation>().Add(Restrictions.Eq("Name", "blah")); var locations = criteria.GetExecutableCriteria(UoW.Session).List<ILocation>(); Are there any issues with not using the hilo ID generator and/or with this approach in general?

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• Scope of This JavaScript Variable

  - by dkris

  I have a question and an issue wrt the code below: My question is what is the scope of the variable loaded here. The reason why i ask this is the onload="if(loaded==1)inittextarea() code is working fine on Firefox and not IE8. Why is this happening? Is there something specific i need to do here? Or is it not a valid practice? <html> <head> <title>Some Page</title> <link rel="stylesheet" href="../css/default.css" type="text/css"> <script type="text/javascript"> var loaded = 0; /*Point of interest*/ function jsLoaded() { loaded =1; } </script> <script type="text/javascript"> function inittextarea() { alert("test") tinyMCE.init({ elements : "content", theme : "advanced", readonly : true, mode : "exact", theme : "advanced", readonly : true, setup : function(ed) { ed.onInit.add(function() { tinyMCE.activeEditor.execCommand("mceToggleVisualAid"); }); } }); } </script> <script src="../js/tiny_mce/tiny_mce.js" onload="jsLoaded()" type="text/javascript"></script> </head> <body onload="if(loaded==1)inittextarea()"><!--Works on Firefox only--> *Usual stuff* </body></html> Any pointers please?

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• After Adding "readonly" attribute on text box not able to remove it in one event

  - by Sreedhar K

  Steps to repro USE Internet Explorer Check unlimited check box Click on text box (It will remove tick/check from check box) Try to enter text in text box We cannot enter in the text box 4. Click again on the text box. Now we will be able to enter text in the text box We tried by 1. Making attribute readOnly to flase i.e. $('#myinput').attr('readOnly', false); 2. Calling $('#myinput').click(); Below is the HTML code <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Make input read only</title> <script type="text/javascript" src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.4.min.js"></script> </head> <body> <input id="myinput" type="text" /> <input id="mycheck" type="checkbox" /> <script type="text/javascript"> /*oncheck box click*/ $('#mycheck').click(function () { if ($(this).attr('checked')) { $('#myinput').attr('readOnly', 'readOnly'); } else { $('#myinput').removeAttr('readOnly'); /* also tried * $('#myinput').attr('readOnly', false); * $('#myinput').attr('readOnly', ''); */ } }); /*on text box click*/ $('#myinput').click(function () { $('#mycheck').removeAttr('checked'); $('#myinput').removeAttr('readOnly'); /* also tried * $('#myinput').attr('readOnly', false); * $('#myinput').attr('readOnly', ''); */ }); </script> </body> </html> Live copy

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• getchar does not stop when using scanf

  - by Oz123

  I am have a difficulty understanding getchar(). In the following program getchar works as expected: #include <stdio.h> int main() { printf("Type Enter to continue..."); getchar(); return 0; } However, in the following program, getchar does not create a delay and the program ends: #include <stdio.h> int main() { char command[100]; scanf("%s", command ); printf("Type Enter to continue..."); getchar(); return 0; } I have the following weired workaround, which works, but I understand why: #include <stdio.h> int main() { char command[100]; int i; scanf("%s", command ); printf("Type Enter to continue..."); while ( getchar() != '\n') { i=0; } getchar(); return 0; } So my questions are: 1. What is scanf doing? Why does scanf do this ? 2. Why is my work around working? 3. What is a good way to emulate the following Python code: raw_input("Type Enter to continue")

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• Using multiple named outlets and a wrapper view with no content in Emberjs

  - by user1889776

  I'm trying to use multiple named outlets with Ember.js. Is my approach below correct? Markup: <script type="text/x-handlebars" data-template-name="application"> <div id="mainArea"> {{outlet main_area}} </div> </script> <script type="text/x-handlebars" data-template-name="home"> <ul id="sections"> {{outlet sections}} </ul> <ul id="categories"> {{outlet categories}} </ul> </script> <script type="text/x-handlebars" data-template-name="sections"> {{#each section in controller}} <li><img {{bindAttr src="section.image"}}></li> {{/each}} </script> <script type="text/x-handlebars" data-template-name="categories"> {{#each category in controller}} <img {{bindAttr src="category.image"}}> {{/each}} </script>? JS Code: Here I set the content of the various controllers to data grabbed from a server and connect outlets with their corresponding views. Since the HomeController has no content, set its content to an empty object - a hack to get the rid of this error message: Uncaught Error: assertion failed: Cannot delegate set('categories' ) to the 'content' property of object proxy : its 'content' is undefined. App.Router = Ember.Router.extend({ enableLogging: false, root: Ember.Route.extend({ index: Ember.Route.extend({ route: '/', connectOutlets: function(router){ router.get('sectionsController').set('content',App.Section.find()); router.get('categoriesController').set('content', App.Category.find()); router.get('applicationController').connectOutlet('main_area', 'home'); router.get('homeController').connectOutlet('home', {}); router.get('homeController').connectOutlet('categories', 'categories'); router.get('homeController').connectOutlet('sections', 'sections'); } }) }) });

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• WPF Collapsed Grid not Styling

  - by Eric

  So, I have a grid inside a listbox. The purpose is that when the listboxitem is selected, I want the grid to show, having the selected item expand to show more detail information. I set up a style trigger for this and it works great, except for one thing: the labels and textblocks styles are unapplied on the grid. I'm assuming this has something to do with the default state of the listboxitem being collapsed, so wpf skips the styles, I was hoping it would put them on when selected fired, but it doesn't. If I use Style="{StaticResource Mystyle}" on each label/textblock, it styles fine, it just seems to not be doing the inherited style magic like it does with visible grids elsewhere in the app. See code below, the labels don't show up bolded or anything when the grid appears. <Style TargetType="{x:Type Grid}" x:Key="ListBoxItemCollapseGrid"> <Style.Triggers> <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource= { RelativeSource Mode=FindAncestor, AncestorType={x:Type ListBoxItem} } }" Value="False"> <Setter Property="Grid.Visibility" Value="Collapsed" /> </DataTrigger> </Style.Triggers> <Style.Resources> <Style TargetType="{x:Type Label}"> <Setter Property="FontWeight" Value="Bold" /> <Setter Property="Foreground" Value="{StaticResource BaseText}" /> <Setter Property="Padding" Value="3,0,0,0" /> </Style> <Style TargetType="{x:Type TextBlock}"> <Setter Property="Foreground" Value="{StaticResource BaseText}" /> </Style> </Style.Resources> </Style>

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• Adding Unlimited Form Fields With JQuery Problem.

  - by TheCREATOR

  I'm fairly new to JQuery and I'm trying to add multiple form fields for example, <li id="container" id="add_field"><input type="text" name="text" value="text" /></li> but I think my JQuery code is off can some one please help me fix the JQuery code? Here is the JQuery script. var count = 0; $(function(){ $('li#add_field').click(function(){ count += 1; $('#container').append( '<li><input id="field_' + count + '" name="fields[]' + '" type="text" /></li>' ); }); }); Here is the html code. <form method="post" action="index.php"> <fieldset> <ul> <li><label for="code">Code: </label> <textarea rows="8" cols="60" name="code" id="code"></textarea></li> <li id="container" id="add_field"><input type="text" name="text" value="text" /></li> <li><label for="comment">Comments: </label> <textarea rows="8" cols="60" name="comment" id="comment"></textarea></li> <li><input type="submit" name="submit" value="Submit" /></li></ul> </fieldset> </form>

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• here is my code in Jquery and Asp.net Unable to get a correct ANS as I am getting from jquery?

  - by ricky roy

  unable to get the correct Ans as i am getting from the Jquery I am using jquery.countdown.js here is my code [WebMethod] public static String GetTime() { DateTime dt = new DateTime(); dt = Convert.ToDateTime("April 9, 2010 22:38:10"); return dt.ToString("dddd, dd MMMM yyyy HH:mm:ss"); } html file <script type="text/javascript" src="Scripts/jquery-1.3.2.js"></script> <script type="text/javascript" src="Scripts/jquery.countdown.js"></script> <script type="text/javascript"> $(function() { var shortly = new Date('April 9, 2010 22:38:10'); var newTime = new Date('April 9, 2010 22:38:10'); //for loop divid /// $('#defaultCountdown').countdown({ until: shortly, onExpiry: liftOff, onTick: watchCountdown, serverSync: serverTime }); $('#div1').countdown({ until: newTime }); }); function serverTime() { var time = null; $.ajax({ type: "POST", //Page Name (in which the method should be called) and method name url: "Default.aspx/GetTime", // If you want to pass parameter or data to server side function you can try line contentType: "application/json; charset=utf-8", dataType: "json", data: "{}", async: false, //else If you don't want to pass any value to server side function leave the data to blank line below //data: "{}", success: function(msg) { //Got the response from server and render to the client time = new Date(msg.d); alert(time); }, error: function(msg) { time = new Date(); alert('1'); } }); return time; } function watchCountdown() { } function liftOff() { } </script>

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• Ozeki Server not recieving SMS messages

  - by Sam Thompson

  I'm trying to get Ozeki to recieve SMS messages from my GSM Nokia E63 - it will send messages fine but wont recieve them. I am also trying to get a PHP/HTML form to generate messages, but the example on the Ozeki website won't work! <?php if ($submit=="Send") { $url='http://localhost:9333/ozeki?'; $url.="action=sendMessage"; $url.="&login=admin"; $url.="&password=abc123"; $url.="&recepient=".urlencode($recepient); $url.="&messageData=".urlencode($message); $url.="&sender=".urlencode($sender); file($url); } ?> <html> <form method=post action='index.php'> <table border=0> <tr> <td>Sender</td><td><input type='text' name='sender'></td> </tr> <tr> <td>Recepient</td><td><input type='text' name='recepient'></td> </tr> <tr> <td>Message</td><td><input type='text' name='message'</td> </tr> <tr> <td colspan=2><input type=submit name=submit value=Send> </form> </tr> </table> </form> </html> Any help?!

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• How do I invoke a SimpleModal OSX dialog on page load?

  - by Priyank Sharma

  I was wondering if there is a way to invoke the SimpleModal OSX dialog box on page load? I tried http://stackoverflow.com/questions/522864/open-jquery-modal-dialog-on-page-load but wasn't able to make it happen. Currently, the dialog is invoked on clicking a button / link. I would like to invoke it on page load. Please help. :) Thanks! <script type='text/javascript' src='js/jquery.js'></script> <script type='text/javascript' src='js/jquery.simplemodal.js'></script> <script type='text/javascript' src='js/osx.js'></script> <input type='button' name='osx' value='Demo' class='osx demo'/> or <a href='#' class='osx'>Demo</a> <div id="osx-modal-content"> <div id="osx-modal-data"> <h2>Hello! I'm SimpleModal!</h2> <p><button class="simplemodal-close">Close</button> <span>(or press ESC or click the overlay)</span></p> </div> </div>

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• Error returning Ajax in IE7

  - by GuiPereira

  Hi everybody! It's my first question here. First of all, sorry for my 'not perfect' english... I'm developing an ASP.NET MVC application with AJAX. I have the following code in the View: <% using(Html.BeginForm(null, "Home", FormMethod.Post, new{id="formcpf"})){ %> <p> <input name="tipo" type="radio" value="GeraCPF" /> CPF <input type="radio" name="tipo" value="GeraCNPJ" /> CNPJ </p> <p> <input type="submit" id="sbmt" value="Gerar" /> <br /><br /> <span id="lblCPF" class="respostaBG"></span> </p> <%} % and the following Javascript to call an Ajax request: $(document).ready(function() { $("form#formcpf").submit(function(event) { $(this).attr("action", $("input[@name='tipo']:checked").val()); event.preventDefault(); hijack(this, update_sessions, "html"); }); }); function hijack(form, callback, format) { $.ajax({ url: form.action, type: form.method, dataType: format, data: $(form).serialize(), success: callback }); } function update_sessions(result) { $("#lblCPF").html(result); } in Firefox and Chrome works fine, but in IE7 sometimes returns the value into the label, sometimes not. I have to keep submiting to get the return. Anyone could help?

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• F# and statically checked union cases

  - by Johan Jonasson

  Soon me and my brother-in-arms Joel will release version 0.9 of Wing Beats. It's an internal DSL written in F#. With it you can generate XHTML. One of the sources of inspiration have been the XHTML.M module of the Ocsigen framework. I'm not used to the OCaml syntax, but I do understand XHTML.M somehow statically check if attributes and children of an element are of valid types. We have not been able to statically check the same thing in F#, and now I wonder if someone have any idea of how to do it? My first naive approach was to represent each element type in XHTML as a union case. But unfortunately you cannot statically restrict which cases are valid as parameter values, as in XHTML.M. Then I tried to use interfaces (each element type implements an interface for each valid parent) and type constraints, but I didn't manage to make it work without the use of explicit casting in a way that made the solution cumbersome to use. And it didn't feel like an elegant solution anyway. Today I've been looking at Code Contracts, but it seems to be incompatible with F# Interactive. When I hit alt + enter it freezes. Just to make my question clearer. Here is a super simple artificial example of the same problem: type Letter = | Vowel of string | Consonant of string let writeVowel = function | Vowel str -> sprintf "%s is a vowel" str I want writeVowel to only accept Vowels statically, and not as above, check it at runtime. How can we accomplish this? Does anyone have any idea? There must be a clever way of doing it. If not with union cases, maybe with interfaces? I've struggled with this, but am trapped in the box and can't think outside of it.

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• How does an NSTextField know that it's value has changed?

  - by Brian Postow

  I have a textfield that can either be edited by hand, or set through another control. (It's a page number, so you can jump to page 16 by typing in 16, or you can page up and down with the next/prev buttons) I have the value of the text field bound to an int page variable. It seems to work correctly, when you type a page number in, it jumps, when you page up and down, the page number in the text box changes appropriately. However, at some level, when I page up and down, the text box doesn't seem to know that it's value has changed, because if I type 1 it doesn't do anything. It doesn't call the bound set-method or anything. It looks like the textfield is thinking "I'm already 1, so I don't need to do anything." Even though it was 5 because I hit next 4 times. If I type an number other than 1, it goes there. If I THEN type 1, it goes to page 1, because now it thinks it's on that other page. The problem seems to be that I'm changing the value of the textfield programatically, but some part isn't getting the message. Does this seem like a reasonable explanation? And either way, any ideas on what's causing it? thanks

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• Database design for a media server containing movies, music, tv and everything in between?

  - by user364114

  In the near future I am attempting to design a media server as a personal project. MY first consideration to get the project underway is architecture, it will certainly be web based but more specifically than that I am looking for suggestions on the database design. So far I am considering something like the following, where I am using [] to represent a table, the first text is the table name to give an idea of purpose and the items within {} would be fields of the table. Also not, fid is functional id referencing some other table. [Item {id, value/name, description, link, type}] - this could be any entity, single song or whole music album, game, movie - almost see this as a recursive relation, ie. a song is an item but an album that song is part of is also an item or for example a tv season is an item, with multiple items being tv episodes [Type {id, fid, mime type, etc}] - file type specific information - could identify how code handles streaming/sending this item to a user [Location {id, fid, path to file?}] [Users {id, username, email, password, ...? }] - user account information [UAC {id, fid, acess level}] - i almost feel its more flexible to seperate access control permissions form the user accounts themselves [ItemLog {id, fid, fid2, timestamp}] - fid for user id, and fid2 for item id - this way we know what user access what when [UserLog {id, fid, timestamp}] -both are logs for access, whether login or last item access [Quota {id, fid, cap}] - some sort of way to throttle users from queing up the entire site and letting it download ... Suggestions or comments are welcome as the hope is that this project will be a open source project once some code is laid out.

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• jQuery ajax call failing with undefined error

  - by Groo

  My jQuery ajax call is failing with an undefined error. My js code looks like this: $.ajax({ type: "POST", url: "Data/RealTime.ashx", data: "{}", contentType: "application/json; charset=utf-8", dataType: "json", timeout: 15000, dataFilter: function(data, type) { alert("RAW DATA: " + data + ", TYPE: "+ type); return data; }, error: function(xhr, textStatus, errorThrown) { alert("FAIL: " + xhr + " " + textStatus + " " + errorThrown); }, success: function(data) { alert("SUCCESS"); } }); My ajax source is a generic ASP.NET handler: [WebService(Namespace = "http://my.website.com")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] public class RealTime : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "application/json"; context.Response.Write("{ data: [1,2,3] }"); context.Response.End(); } public bool IsReusable { get { return false; } } } Now, if I return an empty object ("{ }") in my handler, the call will succeed. But when I return any other JSON object, the call fails. The dataFilter handler shows that I am receiving a correct object. Firebug shows the response as expected, and the JSON tab shows that the object is parsed correctly. So what could be the cause?

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• jQueryUI Slider handle not moving

  - by DavidYell

  I'm trying to implement a jQuery slider with increments. I've gone from, the actual project page, to a test page of the project with just the slider, to just the slider. In all cases I've been unable to get the handle to move. It also seems to have a width of 1px or similar. My code is as follows, <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <title>jQuery slider</title> <link rel="stylesheet" href="css/ui-lightness/jquery-ui-1.8.custom.css" type="text/css" media="screen" charset="utf-8" /> <script type="text/javascript" src="js/jquery-1.4.2.min.js"></script> <script type="text/javascript" src="js/jquery-ui-1.8.custom.min.js"></script> <script type="text/javascript"> $(function() { $("#slider").slider(); }); </script> </head> <body> <div id="slider"></div> </body> </html> I'm sure there is something very simple at fault here, but I really cannot see it for the life of me. The custom part of my download, was just clicking the 'select all components'.

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• How do I reset a form in an ajax callback?

  - by B.Gordon

  I am sending a form using simple ajax and returning the results in a div above the form. The problem is that after the form is submitted and validated, I display a thank you and want to reset the form so they don't just press the submit button again... Can't seem to find the right code to do this... <form id="myForm" target="sendemail.php" method="post"> <div id="results"></div> <input type="text" name="value1"> <input type="text" name="value2"> <input type="submit" name="submit"> </form> So, my sendemail.php validation errors and success messages appear in #results without problems. But... when I try to send back a javascript form reset command, it does not work. Naturally I cannot see it in the source code since it is an AJAX callback so I don't know if that is the issue or if I am just using the wrong syntax. echo "<p>Thank you. Your message has been accepted for delivery.</p>"; echo "<script type=\"text/javascript\">setTimeout('document.getElementById('myForm').reset();',1000);</script>"; Any ideas gurus?

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• SimpleModal can't bind event onShow

  - by Higgs Boson

  Hi All I can't seem to get this working, some help would be greatly appreciated. I have a page with the following code: $('.editname').click(function (e) { var src = "test.html"; $.modal('<iframe src="' + src + '" height="480" width="640" style="border:0">', { closeHTML:"<div class='no simplemodal-close'>Close</div>", containerCss:{ backgroundColor:"#fff", border:"10px solid #333", height:480, padding:"10px", width:640 }, opacity:50, overlayCss: {backgroundColor:"#fff"}, onShow: function (dialog) { $('.saveit', dialog.data[0]).click(function () { // close the dialog $.modal.close(); }); } }); }); The code for test.html (the contents of the modal window) is: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> <title>Untitled Document</title> <link href="css/reset.css" rel="stylesheet" type="text/css" /> <link href="css/layout.css" rel="stylesheet" type="text/css" /> <link href="css/text.css" rel="stylesheet" type="text/css" /> </head> <body> <h1>Test</h1> <div class='pointer spacertop'><a href="#" class="saveit">Save</a></div> </body> </html> The modal window appears, however clicking on the Save button (class saveit) in the modal window does not fire the click function. It does nothing. Please help. Thank you in advance.

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