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• Setting the value (selected option) of a dijit.form.Select widget

  - by Wahnfrieden

  I have a dijit.form.Select widget. It's tied to a data store, if that matters. It's filled with several options already. All I want to do is programmatically set its value. I can get its value using myWidget.attr('value') but if I try to do myWidget.attr('value', 5) for example (where 5 is one of the valid values), all it does is reset the widget to select the very first option, no matter what value I give it. This seems to be a bug, and there aren't any tests or documentation which show how to accomplish what I want to. But is there some way, even if it's a dirty hack? I'm using Dojo 1.4.0. Note that dijit.form.Select is the new name for dojox.form.DropDownSelect. edit: I even tried resetting the widget with all new options, but it ignores the option which has selected = true and just selects the first option. There must still be a way though.

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• Why 'initWithObjectsAndKeys:' doesn't throw a casting warning? (NSDictionary)

  - by rubdottocom

  Sorry if the question isn't correct, I'm very new in Objective-C. I understand why this code throw the Warning: "warning: passing argument 1 of 'initWithObjectsAndKeys:' makes pointer from integer without" NSDictionary *dictNames = [[NSDictionary alloc] initWithObjectsAndKeys: 3, @"", 4, @"", 5, @"",nil]; Keys and Values of a NSDictionary must be NSObject and not fundamental types, like the integers 3, 4 and 5. (Correct me if necessary). But I don't understand why this warning dissapears with the only "correct typing" of the first Key. NSDictionary *dictNames = [[NSDictionary alloc] initWithObjectsAndKeys: [NSNumber numberWithInteger:3], @"", 4, @"", 5, @"",nil]; It's because NSDictionary assumes the type of the other Keys? Is correct this manner of initialization?

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• How to mix colors "naturally" with C#?

  - by crono

  I have to mix some colors in a natural way. This means blue + yellow = green blue + red = purple and so on. I got the colors as RGB-Values. When I try to mix them I got the right "RGB"-results like green + red = yellow yellow + blue = white but not the right "natural-wet-paint"-results. Any good idea how to mix RGB in a natural way? It would be great if someone knew a solution within the Microsoft.Xna.Framework.Graphics namespace but a generic solution would also help :)

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• PropertyGrid PaintValue problem: How to remove (and paint outside) the standard rectangle?

  - by Pedery

  This might be a straightforward question, even though I haven't found an easy solution to it: I've implemented my custom UITypeEditor with the sole purpose of adding a PaintValue to bools. For the sake of the discussion, let's assume that PaintValue will either paint a checked or unchecked radiobutton. Question 1: Now, here's the problem: It seems like PaintValue automatically inserts a 20x13px rectangle after all paint code has completed. Naturally, a radiobutton inside a black rectangle is ugly. Can I easily instruct or override this rectagle not to be painted? Question 2: In this respect, is it possible to paint on top of the propertygrid's native look - meaning could I paint something in order to obscure (part of) the black line separating two grid cells vertically? The purpose of doing this would be to indicate that two values were linked, like constrained width/height to an aspect ratio.

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• mySQL auto increment problem: Duplicate entry '4294967295' for key 1

  - by Josh

  I have a table of emails. The last record in there for an auto increment id is 3780, which is a legit record. Any new record I now insert is being inserted right there. However, in my logs I have the occasional: Query FAIL: INSERT INTO mail.messages (timestamp_queue) VALUES (:time); Array ( [0] => 23000 [1] => 1062 [2] => Duplicate entry '4294967295' for key 1 ) Somehow, the autoincrement jumped up to the INT max of 4294967295 Why on god's green earth would this get jumped up so high? I have no inserts with an id field. The show status for that table, Auto_increment table now reads: 4294967296 How could something like this occur? I realize the id field should perhaps be a big int, but the worry I have is that somehow this thing jumps back up. Josh

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• Getting a .Net remoting service accessible with IP v6 and IP v4

  - by jon.ediger

  My company has an existing .Net Remoting service that listens on a port, fronting interfaces used by external systems. This all works great with IP v4 based communications. However, this service now needs to support both IP v4 communications and IP v6 communications. I have found info that the system.runtime.remoting section of the app.config should include two channels as follows: <channel ref="tcp" name="tcp6" port="9000" bindTo="[::]" /> <channel ref="tcp" name="tcp4" port="9000" bindTo="0.0.0.0" /> I've tried this. For communications to this service and a direct response back, this works great. Some of the communications instead return a stream back, either for uploading or downloading large files. These calls fail with the an ArgumentException: IPv4 address 0.0.0.0 and IPv6 address ::0 are unspecified addresses that cannot be used as a target address. Parameter name: hostNameOrAddress How should these config values be modified so that the client will know how to communicate back to the .Net remoting service?

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• multy threading wpf

  - by Eran

  Hey, I'm using web refernce call in new working thread in my application as follow: Thread callRunner = new Thread(delegate() { _mediator.IncomingCallDetails(phoneNumber); }); callRunner.Start() ; the _mediator calls the web refernce and replay to the caller in event as follow: void IncomingCallComplited(IncomingCallEventArg args) { Caller = args.Caller; Lodgers = args.Lodgers; PreviousMissions = args.PreviousMissions; } Caller ,Lodgers and PreviousMissions are properties of an object that bind to GUI element,as for now the binding works fine and i can see the values from the web refernce in screen my question is should I use Dispatcher in the event or in any other phase ? and if I do can someone please explain why? Thanks Eran

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• Zend - combobox value depending on another combobox value

  - by Sorin Adrian Carbunaru

  Is there a way in Zend Framework to fill a combobox with values depending on the value chosen in a previous combobox, but on the same page? In my case I have a combobox for domain and one for specialization. If i choose Informatics in the first combobox (domain), I want to fill the second one with a single specialization - "Informatics". But if I choose Math in the first, I want to fill the second one with two specialization: "Mathematics" and "Mathematics & Informatics". Thank you! Sorin

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• Why does this render as a list of "System.Web.Mvc.SelectListItem"s?

  - by JMT

  I'm trying to populate a DropDownList with values pulled from a property, and my end result right now is a list of nothing but "System.Web.Mvc.SelectListItem"s. I'm sure there's some minor step I'm omitting here, but for the life of me I can't figure out what it is. The property GET generating the list: public IEnumerable<SelectListItem> AllFoo { get { var foo = from g in Bar orderby g.name select new SelectListItem { Value = g.fooid.ToString(), Text = g.name }; return foo.AsEnumerable(); } } The controller code: public ActionResult Edit(string id) { // n/a code ViewData["fooList"] = new SelectList(g.AllFoo, g.fooid); return View(model); } The view code: <%= Html.DropDownListFor(model => model.fooid, ViewData["fooList"] as SelectList) %>

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• multi threading wpf

  - by Eran

  Hey, I'm using web refernce call in new working thread in my application as follow: Thread callRunner = new Thread(delegate() { _mediator.IncomingCallDetails(phoneNumber); }); callRunner.Start() ; the _mediator calls the web refernce and replay to the caller in event as follow: void IncomingCallComplited(IncomingCallEventArg args) { Caller = args.Caller; Lodgers = args.Lodgers; PreviousMissions = args.PreviousMissions; } Caller ,Lodgers and PreviousMissions are properties of an object that bind to GUI element,as for now the binding works fine and I can see the values from the web reference in screen my question is should I use Dispatcher in the event or in any other phase ? and if I do can someone please explain why? Thanks Eran

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• Inspecting Lucene.NET index with Luke want to replicate NHibernate.Search view

  - by Tim Peel

  Hi, I am trying to put together an index using terms, which I specify as a comma separated list. I want to replicate the display in Luke as seen here: http://ayende.com/Blog/archive/2009/05/03/nhibernate-search-again.aspx But my index value just shows as a single field with the comma separate list value. For example: Tags term,anotherterm When I search my index, it will return results if I search with "term" but will not return anything if I search with "anotherterm" I thought the indexing process would break the comma separate list apart into separate values but this does not seem to be the case. Anyone got any ideas? Thanks

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• Hide ticks at Min and Max in WPF Slider

  - by gehho

  Hi, I want to display a Slider ranging from 0.5 to 1.5 with only one tick mark at 1.0 to mark the center and default value. I have defined a Slider as follows: <Slider Minimum="0.5" Maximum="1.5" IsMoveToPointEnabled="True" IsSnapToTickEnabled="False" Orientation="Horizontal" Ticks="1.0" TickPlacement="BottomRight" Value="{Binding SomeProperty, Mode=TwoWay}"/> However, besides a tick mark at 0.0 this Slider also shows tick marks at 0.5 and 1.5, i.e. the Minimum and Maximum values. Is there a way to hide these min/max tick marks?! I checked all properties and tried changing some of them, but did not have success so far. Thanks, gehho.

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• Can I ReRender a JSF Component from backing bean code?

  - by Ben

  Hi, Can I rerender a jsf ui component when a valuechangelistener method is run? The reason i'm asking is that my valuechangelistener method changes the values of the input boxes but when I run it, they don't seem to be rerender. The following doesn't work: <h:inputText id="inputbox_id"/> <h:selectOneMenu valueChangeListener="#{myBean.changeCountryMenu}"> <a4j:support event="onchange" rerender="inputbox_id" action="#{bean.test}> </h:selectOneMenu> Notice that bean.test() is never run. So the solution I thought of is to rerender the inputbox from the valueChangeListener. If there is some other better solution i'd be glad to hear... Thank you! Ben.

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• SharePoint Workflow: how to update the item without triggering the workflow again

  - by Philipp Schmid

  I have a SharePoint workflow which is running whenever the item changes. The workflow communicates with an external REST service. If the service returns a string, I want to update one of the field values with that string. Unfortunately, this update will trigger another instance of the workflow for this item once the current workflow terminates. I end up with an infinite loop! How I can prevent this from happening? SPListItem has Update(), UpdateOverwriteVersion(), and SystemUpdate() methods but none of them seem to prevent subsequent workflows from being triggered. I could inspect the last modified timestamp of the item and terminate the workflow if the last update happened within a certain timespan, but I am looking for a more robust solution.

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• Open flash chart not working

  - by Axel

  I'm trying to implement Open Flash Chart in my website but it doesn't work. The chart just start loading for a second and the loader animation disappear and nothing happening (Only a black swf area). i've downloaded the latest version which is 2 and here is my folders scheme: // ROOT // ? JS ? open-flash-chart ? php-ofc-library - open-flash-chart.swf - mydata.php - mypage.html This is mydata.php content: {"elements":[{"type":"bar","values":[1,2,3,4,5,6,7,8,9]}],"title":{"text":"Wed Apr 21 2010"}} This is mypage.html content: <script type="text/javascript" src="js/swfobject.js"></script> <script type="text/javascript"> swfobject.embedSWF("open-flash-chart.swf", "my_chart", "550", "200","9.0.0", expressInstall.swf", {"data-file":"mydata.php"} ); </script> <div id="my_chart"></div> The JS folder contain swfobject and the open-flash-chart folder contain the action script classes of the chart Is there any mistake i did? Thanks

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• DateTimePicker not updating dataset

  - by Dan

  I'm binding a DateTimePicker control to my dataset (which is linked to a database). However, unless the user changes the date on that control, the dataset seems to contain null for that entry (even though the Value entry of the control isn't null). I've done a bit of googling, and there's a lot of talk about people having troubles with the DateTimePicker not supporting null values. However, I DON'T want it to support a NULL value. The column in my database table is set to "NOT NULL". It's as if the dataset isn't updating itself from the DateTimePicker control unless the user changes the date. I've tried explicitly setting the date for the control in code (using DateTimePicker.Value = DateTime.Now). This still doesn't update the dataset side. Thankyou for any help, Dan.

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• Getting ActiveRecord (Rails) to_xml to use xsi:nil and xsi:type instead of nil and type

  - by nbeyer

  The default behavior of XML serialization (to_xml) for ActiveRecord objects will emit 'type' and 'nil' attributes that are similar to XML Schema Instance attributes, but aren't set in a XML Namespace. For example, a model might produce an output like this: <user> <username nil="true" /> <first-name type="string">Name</first-name> </user> Is there anyway to get to_xml to utilize the XML Schema Instance namespace and prefix the attributes and the values? Using the above example, I'd like to produce the following: <user xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance" xmlns:xs="http://www.w3.org/1999/XMLSchema"> <username xsi:nil="true" /> <first-name xsi:type="xs:string">Name</first-name> </user>

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• Creating a Wiki site in SharePoint 2010

  - by Ben

  I have a SharePoint 2010 site set up and would like to add a Wiki site to it. Normally, to add a subsite to a parent site you would click "Site Actions" - "New Site" and choose the site type (e.g. Team Site) and it would work fine. In the case of adding a Wiki site, I choose "Enterprise Wiki", and get "Error An Unexpected Error has occured Correlation Id:...". So i took the CorrelationId and checked in the ULS files to see what the error is, and the first bad sign seems to be: SharePoint Foundation Feature Infrastructure " The element of type 'ContentTypeBinding' for feature 'EnterpriseWiki' (id: 76d688ad-c16e-4cec-9b71-7b7f0d79b9cd) threw an exception during activation: Specified argument was out of the range of valid values. Parameter name: Content type not found (Id: '0x010100C568DB52D9D0A14D9B2FDCC96666E9F2007948130EC3DB064584E219954237AF39004C1F8B46085B4D22B1CDC3DE08CFFB9C')." There are more errors in the log, but this seems to be the first one. Any ideas on whats going on? Thanks

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• Adaboost algorithm and its usage in face detection

  - by Hani

  I am trying to understand Adaboost algorithm but i have some troubles. After reading about Adaboost i realized that it is a classification algorithm(somehow like neural network). But i could not know how the weak classifiers are chosen (i think they are haar-like features for face detection) and how finally the H result which is the final strong classifier can be used. I mean if i found the alpha values and compute the H ,how am i going to benefit from it as a value (one or zero) for new images. Please is there an example describes it in a perfect way? i found the plus and minus example that is found in most adaboost tutorials but i did not know how exactly hi is chosen and how to adopt the same concept on face detection. I read many papers and i had many ideas but until now my ideas are not well arranged. Thanks....

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• Best way of implementing DropDownList in ASP.NET MVC 2?

  - by Kelsey

  I am trying to understand the best way of implementing a DropDownList in ASP.NET MVC 2 using the DropDownListFor helper. This is a multi-part question. First, what is the best way to pass the list data to the view? Pass the list in your model with a SelectList property that contains the data Pass the list in via ViewData How do I get a blank value in the DropDownList? Should I build it into the SelectList when I am creating it or is there some other means to tell the helper to auto create an empty value? Lastly, if for some reason there is a server side error and I need to redisplay the screen with the DropDownList, do I need to fetch the list values again to pass into the view model? This data is not maintained between posts (at least not when I pass it via my view model) so I was going to just fetch it again (it's cached). Am I going about this correctly?

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• How to convert an object into a double?

  - by george t.

  I am working on VS C# on the following code, which converts an user input math expression and computes it. MSScriptControl.ScriptControl sc = new MSScriptControl.ScriptControl(); sc.Language = "VBScript"; sc.ExecuteStatement( "function pi\n" + "pi = 3.14159265\n" + "end function"); sc.ExecuteStatement( "function e\n" + "e = exp(1)\n" + "end function"); expression = textBox1.Text.ToString(); expression = expression.Replace("x", i.ToString()); object y = sc.Eval(expression); string k = y.ToString(); double result = double.Parse(k); While this outputs onto the console with the correct result, I want to use the values to make a graph of the function user inputs and it's not doing it correctly. Thank you for your help.

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• Using clang to analyze C++ code

  - by aneccodeal

  We want to do some fairly simple analysis of user's C++ code and then use that information to instrument their code (basically regen their code with a bit of instrumentation code) so that the user can run a dynamic analysis of their code and get stats on things like ranges of values of certain numeric types. clang should be able to handle enough C++ now to handle the kind of code our users would be throwing at it - and since clang's C++ coverage is continuously improving by the time we're done it'll be even better. So how does one go about using clang like this as a standalone parser? We're thinking we could just generate an AST and then walk it looking for objects of the classes we're interested in tracking. Would be interested in hearing from others who are using clang without LLVM.

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• From a language design perspective, if Javascript objects are simply associative arrays, then why ha

  - by Christopher Altman

  I was reading about objects in O'Reilly Javascript Pocket Reference and the book made the following statement. An object is a compound data type that contains any number of properties. Javascript objects are associative arrays: they associate arbitrary data values with arbitrary names. From a language design perspective, if objects are simply associative arrays, then why have objects? I appreciate the convenience of having objects in the language, but if convenience is the main purpose for adding a data type, then how do you decide what to add and what to not add in a language? A language can quickly become bloated and less valuable if it is weighed down by several overlapping methods and data types (Is this a true statement or am I missing something).

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• how secure is NSURLConnection over https

  - by drunken_elf

  I've been reading through a number of questions on this site regarding NSURLConnection and https, but most relate to "untrusted" certificates and how to allow them nonetheless. My question is a little more basic. I am building an app for a client who handle online donations, and I would like to load their donation script using an NSLURLRequest and POST the values of credit card details (entered in the app). Does NSURLConnection (when connecting to a https url) ensure the encryption of those details as they are sent to the donation script on my clients server? Sorry if this is a basic question, I just couldn't find a place in the apple docs that guaranteed this.

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• CLang error (objective C): value stored during initialization is never read

  - by Scott Pendleton

  Foo *oFoo = [[[Foo alloc] init] autorelease]; This is how I was taught to program in Objective C, yet the CLang error checker complains that the initial value was never read. But oFoo is an object with properties. oFoo itself has no single value. The property values are what matter. oFoo.PropertyA = 1; oFoo.PropertyB = @"Hello, World." Should I just ignore this? Is this worth fixing? What is the fix, seeing that "initial value" is meaningless in my context?

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