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  • Can I load lots of data only once and use it on each request?

    - by eikes
    Is there a way to load a big data object into the memory, which usually has to be loaded at each request, only once? In Java you can instantiate an object in a servlet when this servlet is loaded, but once it's there you can use it in any request. Example is below. Can this be done in PHP? public class SampleServlet extends HttpServlet { private static HugeGraphObject hgo; public void init() { hgo = HugeGraphObjectFactory.get(); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String param = request.getParameter("q"); response.getWriter().write(hgo.getSomeThing(param)); } }

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  • The pImpl idiom and Testability

    - by Rimo
    The pImpl idiom in c++ aims to hide the implementation details (=private members) of a class from the users of that class. However it also hides some of the dependencies of that class which is usually regarded bad from a testing point of view. For example if class A hides its implementation details in Class AImpl which is only accessible from A.cpp and AImpl depends on a lot of other classes, it becomes very difficult to unit test class A since the testing framework has no access to the methods of AImpl and also no way to inject dependency into AImpl. This has been a problem for me lately and I am beginning to think that the pImpl idiom and writing testable code don't mix well. Has anyone come across this problem before? and have you found a solution?

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  • Prototype setStyle not working in IE6.

    - by Smickie
    Hi, I'm using prototype and setStyle in IE6 is just messing everything up. It's throwing a big error. I've Googled it but cant find a solution. I've identified the line in prototype with the IE script debugger, it's the final else block: setStyle: function(element, styles) { element = $(element); var elementStyle = element.style, match; if (Object.isString(styles)) { element.style.cssText += ';' + styles; return styles.include('opacity') ? element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element; } for (var property in styles) if (property == 'opacity') element.setOpacity(styles[property]); else elementStyle[(property == 'float' || property == 'cssFloat') ? (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') : property] = styles[property]; return element; }, Anyone had this problem? P.S. normally I would use jQuery however this is someone else code I've had to update.

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  • ruby code inside quotes

    - by chief
    I would like to embed videos and have managed to to do so by manually coding the url in where needed. If my url is stored in <%= @vid.url %, how can I use that string for the value and src parameter? <object width="480" height="385"><param name="movie" value="http://www.youtube.com/videos/abc123"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/videos/abc123" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="480" height="385"></embed></object>

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  • can I get .class from generic type argument?

    - by Mike S
    I have the following class: public abstract class MyClass<T extends Object> { protected T createNewFromData(Reader reader){ GSON.fromJSON(reader,T.class); // T.class isn't allowed :( } } How do I pass a Class<T instance into there? Is there some wierd and wacky work around? Is there a way to get a Class<T reference other than from a pre-instantiated Object of type T? It won't let me do this either: T t = new T(); Class<T> klass = t.class; ANSWER BELOW Thanks to the accepted answer, here is the solution: Type type = new TypeToken<T>(){}.getType(); return gson.fromJson(reader, type);

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  • how can i introspect properties and model fields in django?

    - by shreddd
    I am trying to get a list of all existing model fields and properties for a given object. Is there a clean way to instrospect an object so that I can get a dict of fields and properties. class MyModel(Model) url = models.TextField() def _get_location(self): return "%s/jobs/%d"%(url, self.id) location = property(_get_location) What I want is something that returns a dict that looks like this: { 'id' : 1, 'url':'http://foo', 'location' : 'http://foo/jobs/1' } I can use model._meta.fields to get the model fields, but this doesn't give me things that are properties but not real DB fields.

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  • Change macro in VisualStudio

    - by Vaccano
    The macro 'propdp' creates a dependency property like this: public int MyProperty { get { return (int)GetValue(MyPropertyProperty); } set { SetValue(MyPropertyProperty, value); } } // Using a DependencyProperty as the backing store for MyProperty. This enables animation, styling, binding, etc... public static readonly DependencyProperty MyPropertyProperty = DependencyProperty.Register("MyProperty", typeof(int), typeof(ownerclass), new UIPropertyMetadata(0)); I would like to change it a bit. To look like this: public int MyProperty { get { return (int)GetValue(MyPropertyProperty); } set { SetValue(MyPropertyProperty, value); } } public static readonly DependencyProperty MyPropertyProperty = DependencyProperty.Register("MyProperty", typeof(int), typeof(ownerclass), new UIPropertyMetadata(0)); Can this be done? Does anyone know where to change this?

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  • Calculate average in LINQ C# with string representation of property name

    - by Paul
    I need to calculate a whole bunch of averages on an List of Surveys. The surveys have lots of properties that are int and double valued. I am creating a business object to handle all the calculations (there are like 100) and I'd rather not code 100 different methods for finding the average for a particular property. I'd like to be able to have the UI pass a string (representing the property) and have the the business object return an average for that property. So, like... int AverageHeightInInches = MyObject.GetIntAverage("HeightInInches"); . . . Then have linq code to calculate the result. Thanks!

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  • Access Ruby on Rails 'public' directory without relative path

    - by huntca
    I have a flash object I wish to load and I belive the best place to store that asset is in the public directory. Suppose it's stored in public/flash, there must be a better way to path to the swf than what I've done below. Note the 'data' element, it has a relative path. def create_vnc_object haml_tag :object, :id => 'flash', :width => '100%', :height => '100%', :type => 'application/x-shockwave-flash', :data => '../../flash/flash.swf' do haml_tag :param, :name => 'movie', :value => '../../flash/flash.swf' end end Is there some rails variable that points to public?

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  • Drop down menu like the default iPad application menus

    - by Ryan French
    Hi Everyone, I'm currently working on my first iOS application to run on the iPad, and I've come across a problem. I have been asked to implement menu's similar to the ones in the default applications such as when you click on the "Calendars" button in the top left of the calendars app. Only issue is, I cant seem to find a standard UI object that looks like these, with the arrow connecting the menu to the button etc. Is this a standard UI component that I should be able to use, or will I have to imitate them by creating a custom object? Thanks for any help.

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  • [javascript]Where are all funcitons in IE?

    - by user339865
    If i want to take all functions and variables declared in my program in firefox i just iterate 'window' object. For example if i have var a=function() {}; i can use a(); or window.a(); in firefox, but not in IE. I have function iterating window object and writing all function names declared in program like that: for (smthng in window) { document.write(smthng); } works in FF, in IE there are some stuff but nothing i declare before. Any ideas?

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  • Grid View selected index

    - by user2924573
    I have a grid which contains a edit button . When i click the edit button and debug it does not hit to the selected index change event . There are no build errors code behind the grid public void btnModemDetailsEdit_Click(object sender, EventArgs e) { isEdit = true; } protected void gridModemDetails_SelectedIndexChanged(object sender, EventArgs e) { int id = Convert.ToInt32(GridModemDetails.DataKeys[GridModemDetails.SelectedIndex].Values["gridModemDetails_SelectedIndexChanged"].ToString()); } <asp:GridView ID="GridModemDetails" runat="server" Width="435px" DataKeyNames="ModemId" AllowPaging="True" OnSelectedIndexChanged="gridModemDetails_SelectedIndexChanged" AutoGenerateColumns="False"> <Columns> <asp:TemplateField HeaderText="Edit" Visible="True" > <ItemTemplate> <asp:LinkButton ID="btnModemDetailsEdit" AccessibleHeaderText="Edit" ButtonType="Button" Text="Edit" HeaderText="Edit" runat="server" OnClick="btnModemDetailsEdit_Click" runat="server"/> </ItemTemplate> </asp:TemplateField>

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  • Warning that users must handle

    - by hagaik
    I am looking for a way to set warning that the user will have to respond. In a sense I would like to use late exception mechanize that occur after the function already finished executing.and returned the wanted value. SomeObject Foo(int input) { SomeObject result; // do something. oh, we need to warn the user. return result; } void Main() { SomeObject object; object = Foo(1); // after copy consturctor is done I would like an exception to be thrown }

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  • How do I run compiled java classes with GPU libraries (Jogamp JOCL)?

    - by jam383
    Does anyone know how to run the java code from the command line with dependency on GPU libraries in this case Jogamps JOCL. I have compiled a test program HelloJOCL.java but I get an error during run time. I tried javac -classpath "./lib/jocl.jar:./lib/jocl-natives-macosx-universal.jar:./lib/jocl-natives-linux-i586.jar:./lib/jocl-natives-linux-amd64.jar:./lib/gluegen-rt.jar:./lib/gluegen-rt-natives-linux-amd64.jar:./lib/gluegen-rt-natives-macosx-universal.jar:./lib/gluegen-rt-natives-linux-i586.jar" ./HelloJOCL.java java -classpath "./lib/jocl.jar:./lib/jocl-natives-macosx-universal.jar:./lib/jocl-natives-linux-i586.jar:./lib/jocl-natives-linux-amd64.jar:./lib/gluegen-rt.jar:./lib/gluegen-rt-natives-linux-amd64.jar:./lib/gluegen-rt-natives-macosx-universal.jar:./lib/gluegen-rt-natives-linux-i586.jar:." HelloJOCL but get this error Exception in thread "main" java.lang.NoClassDefFoundError: com/jogamp/opencl/CLContext at java.lang.Class.getDeclaredMethods0(Native Method)

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  • [javascript]Where are all functions in IE?

    - by user339865
    If i want to take all functions and variables declared in my program in firefox i just iterate 'window' object. For example if i have var a=function() {}; i can use a(); or window.a(); in firefox, but not in IE. I have function iterating window object and writing all function names declared in program like that: for (smthng in window) { document.write(smthng); } works in FF, in IE there are some stuff but nothing i declare before. Any ideas?

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  • How can I convert my Stream (image data) back into a file

    - by James Hay
    I have a WCF restful service that I'm trying to upload an image to. I have a very basic metod that accepts a stream as it's only parameter and is defined in the contract as: [OperationContract] [WebInvoke(UriTemplate = "ReviewImage", BodyStyle = WebMessageBodyStyle.Bare, Method = "POST")] ReviewImage UploadImage(Stream data); I'm actually consuming this service from flash (which is fairly inconsequntial) which selects a file from the file system and uploads it through the service url. It all works seems to work, adding a breakpoint to the UploadImage method breaks as expected. If I wanted to save this file back to disk, is it just a case of reading this Stream object into a FileStream object that creates the file somewhere? A bit like the this? When i do actually do this the file can not be opened as an image. I'm sure i'm missing a key piece of knowledge here. Does my stream actually contain just the image bytes or does it contain more than that?

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  • Is it possible to Serialize and Deserialize objects in C++?

    - by GK
    As we know c++ is also an Object Oriented Programming language where most the things are objects like java. So wanted to know is the Serialize and deserializ features are available in c++ as well as we do it in java? If yes how it can be achieved? In java We use Serializable Interface to say that this type of object can be serialized and deserialized. So in c++ how? And out of curiosity is it same in c# as in java?

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  • Get length of a Dictionary

    - by StealthRT
    Hey all i am new at this Dictionary class in VB.net. I am wanting to reteive how many items in the Dictionary array there are: But doing this: Dim showNumber As Integer = tmpShows.Length Does not seem to yield 4 as it should? The code for the Dictionary i have is this: Dim all = New Dictionary(Of String, Object)() Dim info = New Dictionary(Of String, Object)() info!Station = .SelectSingleNode(".//span[@class='channel']").ChildNodes(3).ChildNodes(2).InnerText info!Shows = From tag In .SelectNodes(".//a[@class='thickbox']") Select New With {.Show = tag.Attributes("title").Value, .Link = tag.Attributes("href").Value} Dim tmpShows = all.Item(info!Station) Dim showNumber As Integer = tmpShows.Length What am i missing in order to get the 4 length i am looking for?

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  • Error when changing or resetting FBProfilePictureView profileId

    - by Jeff Schwartz
    I have programmatically added an FBProfilePictureView object to a view. When initially logging in, the user's profile picture displays as expected when setting the profileId of the object within the FBLoginViewDelegate method loginViewFetchedUserInfo:user:. However, when logging off the following line of code produces an error: profilePicture.profileId = nil; The error thrown is: [__NSCFNumber isEqualToString:]: unrecognized selector sent to instance Note: This was only an issue after I incrementally upgraded the iOS SDK from 3.5 to 3.8. If anyone has encountered this issue, please let me know. Thanks!

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  • Help in restructuring a project

    - by mrblah
    I have a commerce application, asp.net mvc. I want it to be extensible in the sense others can create other payment providers, as long as they adhere to the interfaces. /blah.core /blah.web /blah.Authorize.net (Implementation of a payment provider using interfaces Ipaymentconfig and paymentdata class) Now the problem is this: /blah.core - PaymentData /blah.core.interfaces - IPaymentConfig where Payment Data looks like: using blah.core; public class PaymentData { public Order Order {get;set;} } IPayment data contains classes from blah.core like the Order class. Now I want to use the actual Authorize.net implementation, so when I tried to reference it in the blah.core project I got a circular dependency error. How could I solve this problem? Many have said to break out the interfaces into their own project, but the problem is PaymentData references entities that are found in blah.core also, so there doesn't seem to be a way around this (in my head anyhow). How can I redesign this?

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  • Java Web Application

    - by Mark R
    I am interested in creating a simple web application that will take in user input, convert it to an XML file and send the file to a database. Coding wise I feel I am okay, it is just the general setup and what implementation to use I am a bit unsure of. At the moment I have a JSP page containing a form, the user fills out the form and on submit a get method is sent to a servlet, in the servlet doGet() method the servlet is instantiating a java object and passing it the user inputted data. The java object then writes that data to an XML file and sends it to the database via REST. All I would be interested to know is if this the standard/optimal way of creating such a web application. Any and all feedback is appreciated. Thanks

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  • Can I un-assign (clear) all fields of an instance?

    - by Roman
    Is there a simple way to clear all fields of an instance from a an instance? I mean, I would like to remove all values assigned to the fields of an instance. ADDED From the main thread I start a window and another thread which controls state of the window (the last thread, for example, display certain panels for a certain period of time). I have a class which contains state of the window (on which stage the user is, which buttons he already clicked). In the end, user may want to start the whole process from the beginning (it is a game). So, I decided. So, if everything is executed from the beginning, I would like to have all parameter to be clean (fresh, unassigned). ADDED The main thread, creates the new object which is executed in a new thread (and the old thread is finished). So, I cannot create a new object from the old thread. I just have a loop in the second thread.

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  • WebBrowserDocumentCompletedEventArgs Not Reached inside While Loop

    - by user3715962
    I am trying to use the WebBrowserDocumentCompletedEventHandler inside of a while loop but when the code executes the WebBrowserDocumentCompletedEventArgs is never reached. Can somebody tell me what I am doing wrong? int year = 1900; int currentYear = 2014; private void button1_Click(object sender, EventArgs e) { while (year < currentYear) { WebBrowser wb = new WebBrowser(); wb.Navigate("http://myurl.com/list/" + year.ToString()); year++; wb.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(wb_DocumentCompleted); } } void wb_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e) { //Code is not reaching here MessageBox.Show("Test"); }

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