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  • Confusion: Ajax Framework vs JavaScript Framework ?

    - by Rachel
    I was under the impression that jQuery is JavaScript Framework, but when am searching for AJAX Framework it appears that jQuery is also being suggested as best AJAX Framework. Reference: Best Ajax Framework My Question: What is Ajax Framework and how it is different from JavaScript Framework like jQuery ? What are best known Ajax Framework ? What are best known JavaScript Framework ?

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  • Running a Java daemon with a GWT front-end served by embedded Jetty

    - by BinaryMuse
    Greetings, coders, Background Info and Code I am trying to create a daemon-type program (e.g., it runs constantly, polling for things to do) that is managed by a GWT application (servlets in a WAR) which is in turn served by an embedded Jetty server (using a WebAppContext). I'm having problems making the GWT application aware of the daemon object. For testing things, I currently have two projects: The daemon and embedded Jetty server in one (EmbJetTest), and the GWT application in another (DefaultApp). This is the current state of the code: First, EmbJetTest creates an embedded Jetty server like so, using a ServletContextListener to inject the daemon object into the web application context: EmbJetTest.server = new Server(8080); // Create and start the daemon Daemon daemon = new Daemon(); Thread thread = new Thread(daemon); thread.start(); // war handler WebAppContext waContext = new WebAppContext(); waContext.setContextPath("/webapp"); waContext.setWar("./apps/DefaultApp.war"); waContext.addEventListener(new DaemonLoader(daemon)); // Add it to the server EmbJetTest.server.setHandler(waContext); EmbJetTest.server.setThreadPool(new QueuedThreadPool(10)); // Start the server; join() blocks until we shut down EmbJetTest.server.start(); EmbJetTest.server.join(); // Stop the daemon thread daemon.stopLoop(); Daemon is a very simple object with a couple properties, at the moment. DaemonLoader is the following ServletContextListener implementation: private Daemon daemon; public DaemonLoader(Daemon daemon) { this.daemon = daemon; } @Override public void contextDestroyed(ServletContextEvent arg0) { } @Override public void contextInitialized(ServletContextEvent arg0) { arg0.getServletContext().setAttribute("daemon", this.daemon); } Then, in one of my servlets in the GWT application, I have the following code: Daemon daemon = (Daemon) this.getServletContext().getAttribute("daemon"); However, when I visit localhost:8080/webapp/* and invoke the servlet, this code throws a ClassCastException, even though the classes are of the same type. This StackOverflow answer indicates that this is because the two classes are loaded with different classloaders. Question My question is twofold. Am I even on the right track here? Am I going about this completely the wrong way? Something tells me I am, but I can't think of another way to make the daemon available to both applications. Is there a better way to communicate with the daemon from the GWT application? Should the GWT app own the daemon and somehow start the daemon itself? The daemon needs to run even if no one visits the one of the GWT app's servlets--how could I do this? If I am on the right track, how can I get around the classloader issue? Thanks in advance.

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  • Maximum Method Name Length

    - by Josh
    Does anyone happen to know what the maximum length of a method name is in your programming language of choice? I was going to make this a C# specific question, but I think it would be nice to know across the spectrum. What are the factors involved as well: Does the language specification limit this? What does the compiler limit it to? Is it different on 32bit vs 64bit machines?

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  • Mercurial error: abort no username supplied

    - by Kevin Won
    Problem on WindowsXP (likely will happen on all Win installs), first time using Mercurial. I found the answer in an inobvious place so I'm asking/answering the question myself so others don't have to search like I did. First time using Mercurial on machine. Add new repoz: c:\bla\>hg add no problem. Next, commit: c:\bla\hg commit error: abort: no username supplied (see "hg help config")

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  • Octave datatypes - float & double

    - by mush
    I'm writing a framework for writing HDF files with JAVA (Using some existing framework). I need to keep compatibility with octave. That is, octave should be able to read the files my framework writes and vice versa. My question is, does Octave have two data types - float and double or it uses only double? thanks

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  • indentation preference and personality

    - by dreftymac
    This question is similar in spirit to : http://stackoverflow.com/questions/492178/links-between-personality-types-and-language-technology-preferences But it is based specifically on indentation (spaces vs tabs and the number of spaces). The reason I am asking here instead of searching is because I remember seeing a specific document writing about this. If I remember correctly, it also talked about why Linus prefers eight spaces.

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  • Active Record Validations : uniqueness of

    - by Elliot
    Hey guys, I'm using http://ar.rubyonrails.org/classes/ActiveRecord/Validations/ClassMethods.html#M000086 to validate records. My form is currently a remote form, using RJS. My question, is how to I return the :message (for errors) to the page through ajax (and I assume the create.rjs file)? Best, Elliot

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  • How to get an outline view in sublime texteditor?

    - by karlthorwald
    How do I get an outline view in sublime code editor for Windos? http://www.sublimetext.com/ The minimap is helpful but I miss a traditional outline (a klickable list of all the functions in my code in the order they appear for quick navigation and orientation) Maybe there is a plugin, addon or similar? It would also be nice if you can shortly name which steps are neccesary to make it work. There is a duplicate of this question here: http://www.sublimetext.com/forum/viewtopic.php?f=3&t=993&p=4308&sid=1a162626960826ab21861f1203f64ec5#p4308

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  • Action Delegate C#

    - by user275561
    So I read MSDN, And stackoverflow. I understand what the Action Delegate does in general but it is not clicking no matter how many examples I do. In General same goes for the idea of delegates. So here is my question when you have a function like this public GetCustomers(Action<IEnumerable<Customer>,Exception> callBack) { } I just Dont have a clue on what is that or what should i pass to it.

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  • How to render a 2d side-scroller

    - by Apoc
    I do not really understand the way I'm suppose to render a side-scroller? How do I know what to render when my character move? What kind of positionning should I use for the characters? I hope my question is clear

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  • Protect .net Web Service URL

    - by Nirmal
    Hello All... I have created Web Service using Asp.net 3.5. Now it's working perfectly in live windows server, and giving me perfect xml while invoking it using some url like : http://www.somedomain.com/Service.asmx?op=fetchData Now My question is when I am accessing url like : http://www.somedomain.com/Service.asmx it's listing my created web services. What if I don't wanna list down the available web services to end users. Thanks in advance...

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  • Multiple Columns as Primary keys

    - by rockbala
    CREATE TABLE Persons ( P_Id int NOT NULL, LastName varchar(255) NOT NULL, FirstName varchar(255), Address varchar(255), City varchar(255), CONSTRAINT pk_PersonID PRIMARY KEY (P_Id,LastName) ) The above example is taken from w3schools. From the above example, my understanding is that both P_Id, LastName together represents a Primary Key for the table Persons, correct ? Another question is why would some one want to use multiple columns as Primary keys instead of a single column ? How many such columns can be used in together as Primary key in a given table ? Thanks Balaji S

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  • Get size of UIView after applying CGAffineTransform

    - by Ican Zilb
    I was surprised not to find an answer to this question, maybe is something very simple I somehow overlook : How to get the real size of an UIView after I apply a CGAffineTransform to it? eg. my UIView has size 300 x 200, I apply a scaling transform let's say factor 2 both horizontal and vertical, so the UIView now takes 600 x 400 on the screen, but it's bounds and it's layer's bounds are still returning a size of 300 x 200 ... where do I find the real size of the UIView ?

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  • TimeZoneInfo to TIME_ZONE_INFORMATION structure

    - by jaircazarin-old-account
    Hey, I've a TimeZoneInfo object and from this one I want to create a TIME_ZONE_INFO struct. Bias, StandardDate and Daylightdate are pretty easy to obtain. However, I'm having problems getting standardbias and daylightbias. So the question is, How can I get the standardbias from a TimeZOneInfo object and how can I get the same thing for daylightbias (there is a AdjustmentRule.DaylightDelta, but as you can see I need the offset not the delta). Thanks.

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  • Where to find changes from iphone OS 3.0 to 3.1.3

    - by Joe
    I've developed an app using the 3.1.3 SDK and I want to set the deployment target to OS 3.0. The app uses iPod functionality which I can't test on the Simulator so my question is: Is there somewhere I can find a list of the changes from 3.0 to 3.1.3 so I can check if anything might be broken on an OS 3.0 device? I've looked on Apple's website obviously but can't find anything. How do people normally test on old software releases?

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  • RichTextBox CaretPosition physical location

    - by Jan Kratochvil
    Hi, I'm using a RichTextBox class to make some automatic text formatting. And mz question is, how do I get the RichTextBox to put some string immediately after the caret. When I use RichTextBox.CaretPosition.InsertTextInRun("some string") the text is inserted after the current logical block, but I need to be insterted immediately after the caret, in the middle of a Run block. I hope it's clear, thx very much.

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  • Authorizing a computer to access a web application

    - by HackedByChinese
    I have a web application, and am tasked with adding secure sign-on to bolster security, akin to what Google has added to Google accounts. Use Case Essentially, when a user logs in, we want to detect if the user has previously authorized this computer. If the computer has not been authorized, the user is sent a one-time password (via email, SMS, or phone call) that they must enter, where the user may choose to remember this computer. In the web application, we will track authorized devices, allowing users to see when/where they logged in from that device last, and deauthorize any devices if they so choose. We require a solution that is very light touch (meaning, requiring no client-side software installation), and works with Safari, Chrome, Firefox, and IE 7+ (unfortunately). We will offer x509 security, which provides adequate security, but we still need a solution for customers that can't or won't use x509. My intention is to store authorization information using cookies (or, potentially, using local storage, degrading to flash cookies, and then normal cookies). At First Blush Track two separate values (local data or cookies): a hash representing a secure sign-on token, as well as a device token. Both values are driven (and recorded) by the web application, and dictated to the client. The SSO token is dependent on the device as well as a sequence number. This effectively allows devices to be deauthorized (all SSO tokens become invalid) and mitigates replay (not effectively, though, which is why I'm asking this question) through the use of a sequence number, and uses a nonce. Problem With this solution, it's possible for someone to just copy the SSO and device tokens and use in another request. While the sequence number will help me detect such an abuse and thus deauthorize the device, the detection and response can only happen after the valid device and malicious request both attempt access, which is ample time for damage to be done. I feel like using HMAC would be better. Track the device, the sequence, create a nonce, timestamp, and hash with a private key, then send the hash plus those values as plain text. Server does the same (in addition to validating the device and sequence) and compares. That seems much easier, and much more reliable.... assuming we can securely negotiate, exchange, and store private keys. Question So then, how can I securely negotiate a private key for authorized device, and then securely store that key? Is it more possible, at least, if I settle for storing the private key using local storage or flash cookies and just say it's "good enough"? Or, is there something I can do to my original draft to mitigate the vulnerability I describe?

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  • How are hash functions like MD5 unique?

    - by Aly
    Im aware that MD5 has had some collisions but this is more of a high level question about hashing functions. If MD5 hashes any arbitrary string into a 32-digit hex value, then according to the Pigeonhole Principle surely this can not be unique as there are more unique arbitrary strings than there are unique 32-digit hex values

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  • For a .NET winforms datagridview I would like a combobox column to have a different set of values for each row.

    - by Seth Spearman
    Hello, I have a DataGridView that I am binding to a POCO. I have the databinding working fine. However, I have added a combobox column that I want to be different for each row. Specifically, I have a grid of purchased items, some of which have sizes (like Adult XL, Adult L) and other items are not sized (like Car Magnet.) So essentially what I want to change is the DATA SOURCE for a combobox column in the data grid. Can that be done? What event can I hook into that would allow me to change properties of certain columns FOR EACH ROW? An acceptable alternative is to change a property when the user clicks or tabs into the row. What event is that? Seth EDIT I need more help with this question. With Triduses help I am SO close but I need a bit more information. First, per the question, is the CellFormatting event really the best/only event for changing the DataSource for a combo box column. I ask because I am doing something rather resource/data intensive, not merely formatting the cell. Second, the cellformatting event is being called just by having the mouse hover over the cell. I tried to set the FormattingApplied property inside my if-block and then I check for it in the if- test but that is returning a weird error message. My ideal situation is that I would apply change the data source for the combo box once for each row and then be done with it. Finally, in order to set the data source of the combobox colunm I have to be able to cast the Cell inside my if block to a type of DataGridViewComboBoxColumn so that I can fill it with rows or set the datasource or something. Here is the code I have right now. Private Sub ProductsDataGrid_CellFormatting(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles ProductsDataGrid.CellFormatting If e.ColumnIndex = ProductsDataGrid.Columns("SizeDGColumn").Index Then ' AndAlso Not e.FormattingApplied Then Dim product As LeagueOrderProductInfo = DirectCast(ProductsDataGrid.Rows(e.RowIndex).DataBoundItem, LeagueOrderProductInfo) Dim sizes As LeagueOrderProductSizeList = product.ProductSizes sizes.RemoveSizeFromList(_parentOrderDetail.SizeID) 'WHAT DO I DO HERE TO FILL THE COMBOBOX COLUMN WITH THE sizes collection. End If End Sub Please help. I am completely stuck and this task item should have taken an hour and I am 4+ hours in now. BTW, I am also open to resolving this by taking a completely different direction with it (as long as I can be done quickly.) Seth

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  • WPF Applications Size Vs Winforms App Size

    - by jmayor
    Does WPF compiled code is bigger or smaller than Winform compiled code? Does WPF generates more code behind that Winform does? I have a Winform App and I want to make a new version on WPF. Customers get the updates of this app by dowloading it. So my question is, If I make the application now on WPF just using the same screens how bigger can it be the compiled solution compared to the WinForm version.

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