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  • Create array of objects based on another array?

    - by xckpd7
    I want to take an array like this: var food = [ { name: 'strawberry', type: 'fruit', color: 'red', id: 3483 }, { name: 'apple', type: 'fruit', color: 'red', id: 3418 }, { name: 'banana', type: 'fruit', color: 'yellow', id: 3458 }, { name: 'brocolli', type: 'vegetable', color: 'green', id: 1458 }, { name: 'steak', type: 'meat', color: 'brown', id: 2458 }, ] And I want to create something like this dynamically: var foodCategories = [ { name: 'fruit', items: [ { name: 'apple', type: 'fruit', color: 'red', id: 3418 }, { name: 'banana', type: 'fruit', color: 'yellow', id: 3458 } ] }, { name: 'vegetable', items: [ { name: 'brocolli', type: 'vegetable', color: 'green', id: 1458 }, ] }, { name: 'meat', items: [ { name: 'steak', type: 'meat', color: 'brown', id: 2458 } ] } ] What's the best way to go about doing this?

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  • "The image <name> cannot be displayed because it contains errors" when using pchart Render method

    - by christophe-milard
    Hi, I am trying to use the pchart package (over php) to build (and directly display) graphs/charts. At this time, I am just trying to run their provided example (Example1.php), where I just have replaced the final: $Test-Render("example1.png"); by $Test-Stroke(); But When I do this, I get:" The image cannot be displayed because it contains errors" on the browser. If I leave the original "$Test-Render(...)" the generated image is OK. (but not sent) I have read that there is (was?) an issue with mozilla/Firefox browsers regarding images being required twice and the REFER URL, but when I browse at the pchart home page, I can use their "sanboxes" and get the result of my tests directly displayed on my browser (http://pchart.sourceforge.net/demo.php). ... So their must be a way (or a nice work around) to send the generated graphs directely to the browser successfuly. If your answer is to generate the image (i.e. use Render) and then send it afterwards, please but accurate on how to do this (how do I destroy the generated files automaticaly, permissions...) I am new to this, sorry advance if it's obvious...;-)

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  • C#: Object reference not set to an instance of an object.

    - by Vinzcent
    Hey, I get the following error: Object reference not set to an instance of an object This is my C Sharp code: DataTable tableAcces = dsAcces.Tables["dsPrinterAcces"]; DataTable tableMDF = dsAcces.Tables["dsPrinterMDF"]; DataRow newrow = null; foreach(DataRow dr in tableAcces.Rows) { newrow = tableMDF.NewRow(); newrow["PRINTER_ID"] = dr["PRINTER_ID"]; newrow["MERK"] = dr["MERK"]; newrow["MODEL"] = dr["MODEL"]; newrow["LOKAAL_ID"] = dr["LOKAAL_ID"]; tableMDF.Rows.Add(newrow); } daMDF.Update(dsMDF, "dsPrinterMDF"); lblSucces.Text = "Gelukt. De tabel printers is overgezet."; } In this line, he throws the error: newrow = tableMDF.NewRow(); Thanks a lot, Vincent

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  • performance of linq extension method ElementAt

    - by Fabiano
    Hi The MSDN library entry to Enumerable.ElementAt(TSource) Method says "If the type of source implements IList, that implementation is used to obtain the element at the specified index. Otherwise, this method obtains the specified element." Let's say we have following example: ICollection<int> col = new List<int>() { /* fill with items */ }; IList<int> list = new List<int>() { /* fill with items */ }; col.ElementAt(10000000); list.ElementAt(10000000); Is there any difference in execution? or does ElementAt recognize that col also implements IList< although it's only declared as ICollection<? Thanks

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  • Deserialization of JSON object by using DataContractJsonSerializer in C#

    - by user2539667
    enter code hereI'm sure this question has been asked over and over again, but for some reason, I still can't manage to get this to work. I want to deserialize a JSON object that contains a single member; a string array: [{"idTercero":"cod_Tercero"}] This is the class that I'm trying to deserialize into: [DataContract] public class rptaOk { [DataMember] public string idTercero { get; set; } public rptaOk() { } public rptaOk(string idTercero) { this.idTercero = idTercero; } } This is the method that I try to deserialize: public T Deserialise<T>(string json) { DataContractJsonSerializer deserializer = new DataContractJsonSerializer(typeof(T)); using (MemoryStream stream = new MemoryStream(Encoding.Unicode.GetBytes(json))) { T result = (T)deserializer.ReadObject(stream); return result; } } And so try to fill the object: rptaOk deserializedRpta = deserializarOk(rpta); But for some reason, this returns "" MessageBox.Show(deserializedRpta.idTercero);

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  • No "Terminal Services" branch in "Group Policy Object Editor"

    - by ayavilevich
    Hi, We have several identical several servers in a hosting company. They run Windows 2003 R2 Std SP2 64bit. The servers are not in a domain. We have recently received a new server with the same configuration and hardware. However, the new server is different in some way. When we run "gpedit.msc /s" there are much less options in the tree than the other servers. Specifically we are missing the configuration of "Terminal Services". Many other items are missing under "Administrative templates" and "Windows components". Screenshot of correct server: (can't post link due to SF policy) Screenshot of new server: http://img686.imageshack.us/img686/572/gpowindowscomponentstp5.png What should we try? Thanks, Arik.

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  • LD_LIBRARY_PATH : how to find a shared object

    - by CuriousDawg
    I have a shared object ( libxyz.so ). Given LD_LIBRARY_PATH, how can find the exact location of this shared object? If i had a binary that depends on this lib, i would have used ldd on that. Here is the reason why i ask: I have a cgi script which works when using LD_LIBRARY_PATH set to say VALUE1. It does not work when the path is set to VALUE2. I would like to find the exact location of the library as specified by the path in VALUE1 ( Note that VALUE1 has almost 20+ different locations ) Platform: Linux

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  • Performance of std::pow - cache misses???

    - by Eamon Nerbonne
    I've been trying to optimize a numeric program of mine, and have run into something of a mystery. I'm looping over code that performs thousands of floating point operations, and just 1 call to pow nevertheless, that call takes 5% of the time... That's not necessarily a critical issue, but it is odd, so I'd like to understand what's happening. When I profiled for cache misses, VS.NET 2010RC's profiler reports that virtually all cache misses are occurring in std::pow... so... what's up with that? Is there a faster alternative? I tried powf, but that's only slightly faster; it's still responsible for an abnormal number of cache misses. Why would a basic function like pow cause cache-misses?

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  • Modify an object without using it as parameter

    - by Claire Huang
    I have a global object "X" and a class "A". I need a function F in A which have the ability to modify the content of X. For some reason, X cannot be a data member of A (but A can contain some member Y as reference of X), and also, F cannot have any parameter, so I cannot pass X as an parameter into F. (Here A is an dialog and F is a slot without any parameter, such as accept() ) How can I modify X within F if I cannot pass X into it? Is there any way to let A know that "X" is the object it need to modify?? I try to add something such as SetItem to specify X in A, but failed.

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  • Get the string representation of a jquery DOM object's entire HTML

    - by Scozzard
    Hi, I have had a bit of a look around and am having some difficulty solving a wee issue I am having. I basically have a string of HTML, I convert that to a JQuery DOM object so that I can easily remove all elements that have a certain class using JQuery's .remove(). I.e., var radHtml = editor.get_html(); var jqDom = $(radHtml); $(".thickbox", jqDom).remove(); $(".thickboxcontent", jqDom).remove(); editor.set_html(this.innerHTML); NOTE: The HTML is derived from content in a RADEditor text editor so there are no parent HTML tags, so can look as follows: <p>This is a header</p> <p>this is some content followed by a table </p> <a href="#TB_inline?height=350&amp;width=400&amp;inlineId=myOnPageContent0" class="thickbox">Test Thickbox</a> <div id="myOnPageContent0" class="thickboxcontent"> <table class="modal"> <thead> </thead> <tbody> <tr> <td>item</td> <td>result</td> </tr> <tr> <td>item 1</td> <td>1</td> </tr> <tr> <td>item 2</td> <td>2</td> </tr> <tr> <td>item 3</td> <td>3</td> </tr> </tbody> </table> </div> Here is what the jqDom.html() returns from the HTML above: "This is a header" I was wondering if there was an easy way to do this - have some html and remove all elements (in this case divs) that have a certain class (but leaving their contents). JQuery doesnt have to used, but I would like to. Manipulating the DOM object is fine - it is getting the full DOM object in its entirety as a string that I am having the problem with. Any help would be much appreicated. Thanks.

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  • Combining a one-to-one relationship into one object in Fluent NHibernate

    - by Mike C.
    I have a one-to-one relationship in my database, and I'd like to just combine that into one object in Fluent NHibernate. The specific tables I am talking about are the aspnet_Users and aspnet_Membership tables from the default ASP.NET Membership implementation. I'd like to combine those into one simple User object and only get the fields I want. I would also like to make this read-only, as I want to use the built-in ASP.NET Membership API to modify. I simply want to take advantage of lazy-loading. Any help would be appreciated. Thanks!

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  • Only send populated object properties over WCF?

    - by dlanod
    I have an object that is being sent across WCF that is essentially a property holder - it can potentially have a large number of properties, i.e. up to 100, but in general only a small subset will be set, up to 10 for instance. Example: [DataContract(Namespace = "...")] public class Monkey { [DataMember] public string Arms { get; set; } [DataMember] public string Legs { get; set; } [DataMember] public string Heads { get; set; } [DataMember] public string Feet { get; set; } [DataMember] public string Bodies { get; set; } /* repeat another X times */ } Is there a way to tell WCF to only send the populated properties over the wire? It seems like a potential waste of bandwidth to send over the full object.

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  • Why can't I reference child entities with part of the parent entities composite key

    - by tigermain
    I am trying to reference some child entities with part of the parents composite key not all of it, why cant I? This happens when I use the following mapping instead of that which is commented. I get the following error Foreign key in table VolatileEventContent must have same number of columns as referenced primary key in table LocationSearchView <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="JeanieMaster.Domain.Entities" assembly="JeanieMaster.Domain"> <class name="LocationSearchView" table="LocationSearchView"> <composite-id> <key-property name="LocationId" type="Int32"></key-property> <key-property name="ContentProviderId" type="Int32"></key-property> <key-property name="CategoryId" type="Int32"></key-property> </composite-id> <property name="CompanyName" type="String" not-null="true" update="false" insert="false"/> <property name="Description" type="String" not-null="true" update="false" insert="false"/> <property name="CategoryId" type="Int32" not-null="true" update="false" insert="false"/> <property name="ContentProviderId" type="Int32" not-null="true" update="false" insert="false"/> <property name="LocationId" type="Int32" not-null="true" update="false" insert="false"/> <property name="Latitude" type="Double" update="false" insert="false" /> <property name="Longitude" type="Double" update="false" insert="false" /> <bag name="Events" table="VolatileEventContent" where="DeactivatedOn IS NULL" order-by="StartDate DESC" lazy="false" cascade="none"> <key> <column name="LocationId"></column> <column name="ContentProviderId"></column> <!--<column name="LocationId"></column> <column name="ContentProviderId"></column> <column name="CategoryId"></column>--> </key> <one-to-many class="Event" column="VolatileEventContentId"></one-to-many> </bag> </class> </hibernate-mapping> And VolatileEventContent mapping file <?xml version="1.0" encoding="utf-8" ?> <hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="JeanieMaster.Domain.Entities" assembly="JeanieMaster.Domain"> <class name="Event" table="VolatileEventContent" select-before-update="false" optimistic-lock="none"> <composite-id> <key-property name="LocationId" type="Int32"></key-property> <key-property name="ContentProviderId" type="Int32"></key-property> </composite-id> <property name="Description" type="String" not-null="true" update="false" insert="false"/> <property name="StartDate" type="DateTime" not-null="true" update="false" insert="false" /> <property name="EndDate" type="DateTime" not-null="true" update="false" insert="false" /> <property name="CreatedOn" type="DateTime" not-null="true" update="false" insert="false" /> <property name="ModifiedOn" type="DateTime" not-null="false" update="false" insert="false" /> <many-to-one name="Location" class="Location" column="LocationId" /> <bag name="Artistes" table="EventArtiste" lazy="false" cascade="none"> <key name="VolatileEventContentId" /> <many-to-many class="Artiste" column="ArtisteId" ></many-to-many> </bag> </class> </hibernate-mapping>

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  • Concrete Types or Interfaces for return types?

    - by SDReyes
    Today I came to a fundamental paradox of the object programming style, concrete types or interfaces. Whats the better election for a method's return type: a concrete type or an interface? In most cases, I tend to use concrete types as the return type for methods. because I believe that an concrete type is more flexible for further use and exposes more functionality. The dark side of this: Coupling. The angelic one: A concrete type contains per-se the interface you would going to return initially, and extra functionality. What's your thumb's rule? Is there any programming principle for this? BONUS: This is an example of what I mean http://stackoverflow.com/questions/491375/readonlycollection-or-ienumerable-for-exposing-member-collections

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  • B64 String Being Stripped From HttpService JSON Object Flex 4.0

    - by user163757
    I am trying to decode some b64 images obtained from a web service in my Flex application. The response of this web service is a basic JSON object, with a property (B64Image) that contains the encoded string. The service works fine from my regular browser, however the b64 string gets stripped. So the object the result handler gets has a null value for B64Image. Anyone see something wrong here? EXPECTED OUTPUT { "PropertyPhotos": [ { "B64Image": "/9j/4AAQSkZJRgABAQEAYABgAAD....etc" } ] } <s:HTTPService id="photoService" url="http://localhost/dev/photohandler.ashx" resultFormat="text" result="photoService_resultHandler(event)" fault="photoService_faultHandler(event)"> </s:HTTPService>

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  • Calling AddEventListener in a loop with a variable element name

    - by user302209
    Hi, I'm trying to do the following: I have a set of images and select (dropdown) HTML elements, 30 of each one. I'm trying to use AddEventListener on a loop from 1 to 30 so that when I change the value of the select, the image src is updated (and the image changes). The AddEventListener function is this one: function AddEventListener(element, eventType, handler, capture) { if (element.addEventListener) element.addEventListener(eventType, handler, capture); else if (element.attachEvent) element.attachEvent("on" + eventType, handler); } I tried this and it worked: var urlfolderanimalimages = "http://localhost/animalimages/"; var testselect = "sel15"; var testimg = "i15"; AddEventListener(document.getElementById(testselect), "change", function(e) { document.getElementById(testimg).src = urlfolderanimalimages + document.getElementById(testselect).value; document.getElementById(testimg).style.display = 'inline'; if (e.preventDefault) e.preventDefault(); else e.returnResult = false; if (e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true; }, false); But then I tried to call it in a loop and it doesn't work. The event is added, but when I change any select, it will update the last one (the image with id i30). var urlfolderanimalimages = "http://localhost/animalimages/"; for (k=1;k<=30;k++) { var idselect = "sel" + k; var idimage = "i" + k; AddEventListener(document.getElementById(idselect), "change", function(e) { document.getElementById(idimage).src = urlfolderanimalimages + document.getElementById(idselect).value; document.getElementById(idimage).style.display = 'inline'; if (e.preventDefault) e.preventDefault(); else e.returnResult = false; if (e.stopPropagation) e.stopPropagation(); else e.cancelBubble = true; }, false); } What am I doing wrong? I'm new to JavaScript (and programming in general), so sorry for the vomit-inducing code :(

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  • A PHP design pattern for the model part [PHP Zend Framework]

    - by Matthieu
    I have a PHP MVC application using Zend Framework. As presented in the quickstart, I use 3 layers for the model part : Model (business logic) Data mapper Table data gateway (or data access object, i.e. one class per SQL table) The model is UML designed and totally independent of the DB. My problem is : I can't have multiple instances of the same "instance/record". For example : if I get, for example, the user "Chuck Norris" with id=5, this will create a new model instance wich members will be filled by the data mapper (the data mapper query the table data gateway that query the DB). Then, if I change the name to "Duck Norras", don't save it in DB right away, and re-load the same user in another variable, I have "synchronisation" problems... (different instances for the same "record") Right now, I use the Multiton pattern : like Singleton, but multiple instances indexed by a key (wich is the user ID in our example). But this is complicating my developpement a lot, and my testings too. How to do it right ?

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  • Getting "Object is read only" error when setting ClientCredentials in WCF

    - by Paul Mrozowski
    I have a proxy object generated by Visual Studio (client side) named ServerClient. I am attempting to set ClientCredentials.UserName.UserName/Password before opening up a new connection using this code: InstanceContext context = new InstanceContext(this); m_client = new ServerClient(context); m_client.ClientCredentials.UserName.UserName = "Sample"; As soon as the code hits the UserName line it fails with an "Object is read-only" error. I know this can happen if the connection is already open or faulted, but at this point I haven't called context.Open() yet. I have configured the Bindings (which uses netTcpBinding) to use Message as it's security mode, and MessageClientCredentialType is set to UserName. Any ideas?

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  • How do I use Loki's small object allocator?

    - by Gregory
    I need to use Loki's small object allocator but I am very confused as to how it works. I've read the documentation and lots of forums but it doesnt make sense: some of them say to use the stl, others use custom allocators. I just need to be able to test its performance with allocating and deallocating objects of different sizes. Could someone please provide a small example of how to use it?

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  • cache memory performance

    - by Krewie
    Hello, i just have a general question about cache memory. How would a program perform badly on a cache based system ? , since cache memory stores adresses from main memory that is requested, aswell as adresses that ranges around the same adress as the one copied from the main memory.

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  • UITableView programatically create delegate object?

    - by fuzzygoat
    I have a question regarding setting up a custom delegate class for use with UITableView. What I have done is as follows: Setup a new class (in sperate *.h and *.m files for the class) Conformed that new class to the <UITableViewDelegate, UITableViewDataSource> protocols Added the required methods. Created a pointer to the new object using @property and IBOutlet. In InterfaceBuilder created and assigned an object template to my new class Assigned the dataSource and delegate connections. This all works fine. My question is if I don't want to use interfaceBuilder to setup and instantiate my new delegate class directly in Xcode how do I go about doing that? More specifically how would I: Instantiate the delegate class, would that be created / owned by the controller? Set the dataSource and delegate connections? What is the best way of doing this? any help / information is much appreciated. Gary

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