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  • Best practices for developing simple ASP.NET sites (built in controls or JQuery + scripts)

    - by Nix
    I was recently reviewing some code written by two different contractors, both were basic ASP.NET management sites. The sites allowed the user to view and edit data. Pretty much simple CRUD gateways. One group did their best to use built in ASP + AJAX Toolkit controls and did their best to use as many built in controls as possible. I found the code much easier to read and maintain. The other used jQuery and the code is heavily marked up with script blocks which are then used to build pages from javascript files. Which one is more common? The one that basically leveraged embedded HTML markup in scripts controled by javascript files screams readability and maintenance issues? Is this just the way of doing asp dev with jQuery? Assuming the second example happens a lot, are there tools that help facilitate jQuery development with visual studio? Do you think they generated the html somewhere else and just copied it in? Example Script block: <script id="HRPanel" type="text/html"> <table cellpadding='0' cellspacing='0' class="atable"><thead class="mHeader"><tr><th>Name</th><th>Description</th><th>Other</th></thead><tbody> <# for(var i=0; i < hrRows.length; i++) { var r = HRRows[i]; #> <tr><td><#=r.Name#></td><td><#=r.Description#></td><td class="taRight"><#=r.Other#></td></tr> <#}#> </tbody><tfoot><th></th><th></th><th></th></tfoot></table> </script> Then in a separate location (js file) you would see something like this. $("#HRPanel").html($("#HRPanel").parseTemplate({ HRRows: response.something.bah.bah }));

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  • Problem getting ar_mailer/ar_sendmail working on new server

    - by Max Williams
    Hey all. I've got a new app up and running on a new ubuntu server. It's working fine generally but i can't get ar_sendmail working. I'm following the instructions on this page: http://www.ameravant.com/posts/sending-tons-of-emails-in-ruby-on-rails-with-ar_mailer The setup is all done, ie i can "deliver mails" which just saves records in my Email table. Now i want to get the ar_sendmail daemon running to actually send them. (so i'm at 'Running ar_sendmail in daemon mode' in that web page). First thing: ar_sendmail --mailq >>ar_sendmail: command not found Ok...so, where is ar_sendmail? I have a look and there's an ar_sendmail file in the bin folder of the ar_mailer plugin, so i add the location of that to my path. I don't know if this was the right thing to do or not. Ok, so try again. ar_sendmail --mailq /var/www/apps/millionaire/vendor/plugins/ar_mailer/bin/ar_sendmail:3:in `require': no such file to load -- action_mailer/ar_sendmail (LoadError) from /var/www/apps/millionaire/vendor/plugins/ar_mailer/bin/ar_sendmail:3 hmm. Here's the offending file, there's not much there. #!/usr/bin/env ruby require 'action_mailer/ar_sendmail' ActionMailer::ARSendmail.run ok...so it literally is just trying to require this and can't find it. The file, action_mailer/ar_sendmail.rb is in the ar_mailer plugin, in it's lib folder. So, given that it's being called from inside the plugin, it should be able to see this right? I've got a feeling that i'm way off the track here and have missed something simple. Can anyone set me straight? I'm using rails 2.3.4 in case that's relevant. EDIT - i just realised something kind of dumb: when i call ar_sendmail from the command line like this, i'm just loading that one file, which doesn't know where it's supposed to look for the rest of the stuff, i think. Which really makes me think that i'm not trying to run the right thing. Is the ar_sendmail daemon a seperate program altogether, that i would get with apt_get or something? EDIT2 - i made some progress by installing the ar_mailer gem (which the guide said i shouldn't do) and that does seem to run. It's sending some mail request somewhere and clearing the Email table of pending emails. Running ar_sendmail in -ov (oneshot verbal) mode i see it report this for example: sent email 00000000019 from [email protected] to [email protected]: # So, it actually looks like it's working now and i just need to set up the ACTUAL THING WHICH SENDS EMAILS. sigh. still grateful for any advice. thanks, max

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  • Is Zend Framework a total waste of my time?

    - by Citizen
    Ok, I'm about 50% done with the "30 minute" quickstart guide from Zend. I must be missing something, because this seems like a total waste of time. The point of this quickguide is to create a guestbook, something I could do in 5 minutes with regular naked non-framework php. Here's my path to zend framework: c:/program files/wamp/www/_zend/ Here's my path to my quickstart project: c:/program files/wamp/www/_zend/bin/quickstart/ I have a number of questions at this point: http://framework.zend.com/docs/quickstart/create-a-model-and-database-table 1: I'm running the command line to run my database loading script. I get an error stating the it can't find the Zend/AutoLoader.php becuase my path to the zend library is wrong. I followed all of the steps. I defined the path to my zend library in the main config file, but for some reason, its defined again in my db loader. In all of these scripts that they have me load, it points the relative path to the zend library as being /../library Problem is, there's nothing in that folder. To get to my actual zend folder, you'd need to be (relatively) /../../../../library Which brings me to my 2nd question: 2: Where the #$#$ is the main Zend files supposed to be? The install directions were basically "put it wherever you want", when the real answer (after a bunch of errors and wasted time was) was "put it somewhere so that its really easy to type the full path a thousand times in command line" and "it also better be in a runnable place on your webserver since its going to create your quickstart application in a subdirectory within zend". Which brings us to the third question 3: Am I supposed to have this libary in both the parent core Zend (wamp/_zend/library) AND my application (quickstart/library)? 4: If that is the case, it seems like a ton of wasted files to be uploading. I'd like to use Zend to create products that my customers will download. 5 megs of overhead seems like a bit much. Zend claims you can use these library components separately, but it looks to me like I'm going to have to upload them every time. Which leads to the next question: 5: It appears that perhaps Zend is more for a single application that is not supposed to be distributed. Is this not the case? 6: According to their default file structure everything but my /public folder would be above public_html on my server if I wanted this to rest on my TLD. I would need to rename every reference of /public/ to /public_html/, or am I missing something else?

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  • RMI-applets - Cannot understand error message

    - by aeter
    In a simple RMI game I'm writing (an assignment in uni), I reveice: java.rmi.MarshalException: error marshalling arguments; nested exception is: java.net.SocketException: Broken pipe at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:138) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178) at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132) at $Proxy2.drawWorld(Unknown Source) at PlayerServerImpl$1.actionPerformed(PlayerServerImpl.java:180) at javax.swing.Timer.fireActionPerformed(Timer.java:271) at javax.swing.Timer$DoPostEvent.run(Timer.java:201) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) The error message appears after the second Player is registered with the RMI Server and the server starts to send the image (the array of pixels) to the 2 applets. The PlayerImpl and the PlayerServerImpl both extend UnicastRemoteObject. I have been struggling with other error messages for some time now, but I cannot understand how to troubleshoot this one. Please help. The relevant parts of the code are: PlayerServerImpl.java: ... timer = new Timer(10, new ActionListener() { // every 10 milliseconds do: @Override public void actionPerformed(ActionEvent e) { ... BufferedImage buff_image = new BufferedImage(GAME_APPLET_WIDTH, GAME_APPLET_HEIGHT, BufferedImage.TYPE_INT_RGB); // create a graphics context on the buffered image Graphics buff_g = buff_image.createGraphics(); ... // draw the score somewhere on the screen buff_g.drawString(score, GAME_APPLET_WIDTH - 20, 10); ... int[] rgbs = new int[GAME_APPLET_WIDTH * GAME_APPLET_HEIGHT]; int imgPixelsGrabbed[] = buff_image.getRGB(0,0,GAME_APPLET_WIDTH,GAME_APPLET_HEIGHT,rgbs,0,GAME_APPLET_WIDTH); // send the new state to the applets for (Player player : players) { player.drawWorld(imgPixelsGrabbed); System.out.println("Sent image to player"); } PlayerImpl.java: private PlayerApplet applet; public PlayerImpl(PlayerApplet applet) throws RemoteException { super(); this.applet = applet; } ... @Override public void drawWorld(int[] imgPixelsGrabbed) throws RemoteException { applet.setWorld(imgPixelsGrabbed); applet.repaint(); } ... PlayerApplet.java: ... private int[] world; // an array of pixels for the new image to be drawn ... // register players player = new PlayerImpl(applet); String serverIPAddressPort = ipAddressField.getText(); if (validateIPAddressPort(serverIPAddressPort)) { server = (PlayerServer) Naming.lookup("rmi://" + serverIPAddressPort + "/PlayerServer"); server.register(player); idPlayer = server.sendPlayerID(); ... @Override public void update(Graphics g) { buff_img = createImage((ImageProducer) new MemoryImageSource(getWidth(), getHeight(), world, 0, getWidth())); Graphics gr = buff_img.getGraphics(); paint(gr); g.drawImage(buff_img, 0, 0, this); } public void setWorld(int[] world) { this.world = world; }

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  • jQuery / javascript and nested if statements

    - by rayne
    I have a multi-lingual page where I want to display form validation error in the user's language. I use a hidden input to determine which language version the user is browsing like this: <input type="hidden" name="lang" id="lang" value="<?php echo $lang; ?>" /> The PHP side of the script works, but jQuery doesn't seem to realize which language is passed on. It displays the English error message no matter on which language site I am. Here's the code (I removed the other form fields for length): $(document).ready(function(){ $('#contact').submit(function() { $(".form_message").hide(); var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/; var lang = $("#lang").val(); var name = $("#name").val(); var dataString = { 'lang': lang, 'name': name } if (name == '') { if (lang == 'de') { $("#posted").after('<div class="form_message"><p><span class="error">Fehler:</span> Bitte gib deinen Namen an!</p></div>'); } else { $("#posted").after('<div class="form_message"><p><span class="error">Error:</span> Please enter your name!</p></div>'); } $("#name").focus(); $("#name").addClass('req'); } else { $("#loading").show(); $("#loading").fadeIn(400).html('<img src="/img/loading.gif" />Loading...'); $.ajax({ type: "POST", url: "/contact-post.php", data: dataString, cache: false, success: function(html){ $("#loading").hide(); $("#posted").after('<div class="form_message"><p>Thank you! Your contact request has been sent.</p></div>'); $("#contact input:submit").attr("disabled", "disabled").val("Success!"); } }); }return false; }); }); The problem seems to be somewhere in the nested if statement. Does jQuery / javascript even recognize nested ifs? And if yes, why is it not working?

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  • Java Hardware Acceleration

    - by Freezerburn
    I have been spending some time looking into the hardware acceleration features of Java, and I am still a bit confused as none of the sites that I found online directly and clearly answered some of the questions I have. So here are the questions I have for hardware acceleration in Java: 1) In Eclipse version 3.6.0, with the most recent Java update for Mac OS X (1.6u10 I think), is hardware acceleration enabled by default? I read somewhere that someCanvas.getGraphicsConfiguration().getBufferCapabilities().isPageFlipping() is supposed to give an indication of whether or not hardware acceleration is enabled, and my program reports back true when that is run on my main Canvas instance for drawing to. If my hardware acceleration is not enabled now, or by default, what would I have to do to enable it? 2) I have seen a couple articles here and there about the difference between a BufferedImage and VolatileImage, mainly saying that VolatileImage is the hardware accelerated image and is stored in VRAM for fast copy-from operations. However, I have also found some instances where BufferedImage is said to be hardware accelerated as well. Is BufferedImage hardware accelerated as well in my environment? What would be the advantage of using a VolatileImage if both types are hardware accelerated? My main assumption for the advantage of having a VolatileImage in the case of both having acceleration is that VolatileImage is able to detect when its VRAM has been dumped. But if BufferedImage also support acceleration now, would it not have the same kind of detection built into it as well, just hidden from the user, in case that the memory is dumped? 3) Is there any advantage to using someGraphicsConfiguration.getCompatibleImage/getCompatibleVolatileImage() as opposed to ImageIO.read() In a tutorial I have been reading for some general concepts about setting up the rendering window properly (tutorial) it uses the getCompatibleImage method, which I believe returns a BufferedImage, to get their "hardware accelerated" images for fast drawing, which ties into question 2 about if it is hardware accelerated. 4) This is less hardware acceleration, but it is something I have been curious about: do I need to order which graphics get drawn? I know that when using OpenGL via C/C++ it is best to make sure that the same graphic is drawn in all the locations it needs to be drawn at once to reduce the number of times the current texture needs to be switch. From what I have read, it seems as if Java will take care of this for me and make sure things are drawn in the most optimal fashion, but again, nothing has ever said anything like this clearly. 5) What AWT/Swing classes support hardware acceleration, and which ones should be used? I am currently using a class that extends JFrame to create a window, and adding a Canvas to it from which I create a BufferStrategy. Is this good practice, or is there some other type of way I should be implementing this? Thank you very much for your time, and I hope I provided clear questions and enough information for you to answer my several questions.

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  • using checkbox yo update MySql table

    - by Martin
    Hi All I have been searching round the internet for days on this matter but I keep coming up against a brick wall. What I have is a table full of checkboxes inside an admin area acting as a monthly "to-do" list. It's essentially a worksheet of 30 or so things to do each month that must be checked off each month and notes added if applicable. I have managed to get the checkboxes to update via mysql and be shown somewhere as a list of ticks. I simply did this my setting the value to 1 and on submission it updates the sql table. I have to cover my bases here and also offer the option to un-tick items if they have been ticked b y mistake. But I cant figure out how this is done. Below is my checking code... any help on this matter would be great. <?php $currentTask = ''; echo "<tr class='tr'>"; while ($seolistRow = mysql_fetch_array($seolistRes)) { $taskValue = $seolistRow["taskValue"]; $worksheetID = $seolistRow["worksheetID"]; $taskName = $seolistRow["taskName"]; $taskInfo = $seolistRow["taskInfo"]; if ($taskValue == 1) { $taskDone = "<input type='checkbox' value='1' class='checkbox' name='checkbox".$worksheetID."' id=checkbox'".$worksheetID."' checked='checked' /><div class='taskinfo'>".$taskInfo."</div>"; } else { $taskDone = "<input type='checkbox' value='0' class='checkbox' name='checkbox".$worksheetID."' id='checkbox".$worksheetID."' />"; } if ($currentTask != $taskName) { echo "</tr>"; echo "<tr class='tr'>"; echo "<td class='task'>".$taskName."</td>"; } echo "<td class='tick'>".$taskDone."</td>"; $currentTask = $taskName; } echo "</tr>"; ?>

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  • SQL CLR Stored Procedure and Web Service

    - by Nathan
    I am current working on a task in which I am needing to call a method in a web service from a CLR stored procedure. A bit of background: Basically, I have a task that requires ALOT of crunching. If done strictly in SQL, it takes somewhere around 30-45 mins to process. If I pull the same process into code, I can get it complete in seconds due to being able to optimize the processing so much more efficiently. The only problem is that I have to have this process set as an automated task in SQL Server. In that vein, I have exposed the process as a web service (I use it for other things as well) and want the SQL CLR sproc to consume the service and execute the code. This allows me to have my automated task. The problem: I have read quite a few different topics regarding how to consume a web service in a CLR Sproc and have done so effectivly. Here is an example of what I have followed. http://blog.hoegaerden.be/2008/11/11/calling-a-web-service-from-sql-server-2005/ I can get this example working without any issues. However, whenever I pair this process w/ a Web Service method that involves a database call, I get the following exceptions (depending upon whether or not I wrap in a try / catch): Msg 10312, Level 16, State 49, Procedure usp_CLRRunDirectSimulationAndWriteResults, Line 0 .NET Framework execution was aborted. The UDP/UDF/UDT did not revert thread token. or Msg 6522, Level 16, State 1, Procedure MyStoredProc , Line 0 A .NET Framework error occurred during execution of user defined routine or aggregate 'MyStoredProc': System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. System.Security.SecurityException: at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Net.CredentialCache.get_DefaultCredentials() at System.Web.Services.Protocols.WebClientProtocol.set_UseDefaultCredentials(Boolean value) at MyStoredProc.localhost.MPWebService.set_UseDefaultCredentials(Boolean Value) at MyStoredProclocalhost.MPWebService..ctor() at MyStoredProc.StoredProcedures.MyStoredProc(String FromPostCode, String ToPostCode) I am sure this is a permission issue, but I can't, for the life of me get it working. I have attempted using impersonation in the CLR sproc and a few other things. Any suggestions? What am I missing?

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  • How to setup a webserver in common lisp?

    - by Serpico
    Several months ago, I was inspired by the magnificent book ANSI Common Lisp written by Paul Graham, and the statement that Lisp could be used as a secret weapon in your web development, published by the same author on his blog. Wow, that is amazing. That is something that I have been looking for long time. The author really developed a successful web applcation and sold it to Yahoo. With those encouraging images, I determined to spend some time (1 year or 2 year, who knows) on learning Common Lisp. Maybe someday I will development my web application and turn into a great Lisp expert. In fact, this is the second time for me to get to study Lisp. The first time was a couple of years ago when I was fascinated by the famous book SICP but found later Scheme was so unbelievably immature for real life application. After reading some chapters of ANSI Common Lisp, I was pretty sure that is a great book full of detailed exploration of Common Lisp. Then I began to set up a web server in Common Lisp. After all, this should be the best way if you want to learn something. Demonstrations are always better than definations. As suggested by the book Practical Common Lisp (by the way, this is also a great book), I chose to install AllegroServe on some Common Lisp implementation. Then, from somewhere else, I learned that Hunchentoot seems to be better than AllegroServe. (I don't remember where and whom this word is from. So don't argue with me.) Ironically, you know what, I never could installed the two packages on any Common Lisp implementation. More annoyingly, I even don't know why. The machine always spit up a lot of jargon and lead me into a chaos. I've tried searching the internet and have not found anything. Could anybody who has successfully installed these packages in Linux tell me how you did it? Have you run into any trouble? How did you figured out what is wrong and fixed it? The more detailed, the more helpful.

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  • Git/Mercurial (hg) opinion

    - by Richard
    First, let me say I'm not a professional programmer, but an engineer who had a need for it and had to learn. I was always working alone, so it was just me and my seven splitted personalities ... and we worked okey as a team :) Most of my stuff is done in C/Fortran/Matlab and so far I've been learning git to manage it all. However, although I've had no unsolvable problems with it, I've never been "that" happy with it ... for everything I cannot do, I hae to look up a book. And, for some time now I've been hearning a lot of good stuff about hg. Now, a coleague of mine will have to work with me on a project (I almost feel sorry for him) and he's started learning hg (says he likes it more), and I'm considering the switch myself. We work almost exclusivly on Windows platform (although I manage relatively ok using unix tools and things that come from that part of the world). So, I was wondering, in a described scenario, what problems could I expect with the switch. I heard that hg is rather more user friendly towards windows users, regarding the user interfaces. How does it handle repositories ? Does it create them the same way as git does (just one subdirectory in a working directory) and can I just copy the whole project directory (including git repo) and just carry them somewhere with no extra thinking ? (I really liked that when I was choosing over git/svn). Are there any good books on it that you can recommend (something like Pro Git, only for Hg). What are good ways to implement hg into Visual Studio/GVim for Windows, or into Windows Explorer so I can work relatively easily (I would like to avoid using the command line for everything regarding it, like in git shell). Is there something else I should be aware of (please, on this don't point me to other questions ... they just give me a ton of info, and I'm not sure what is it that I should take as important, and what to disregard). I'm trying to cut some time, since I cannot spend all that time relearning hg, like I did for git. I've also heard git is c project, while mercurial is python ... is there any noticeable difference in speed. git was pretty speedy ... will I encounter some waiting while working. Notice: All my projects are of let's say, middle size ... mostly numerical simulations ... 10-15000 lines (medium size?)

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  • Calculate # of Rowspans and Colspans based on keys in a Multi-Array

    - by sologhost
    Ok, I have these 2 types of layouts, basically, it can be any layout really. I have decided to use tables for this, since using div tags cause undesirable results in some possible layout types. Here are 2 pics that describe the returned results of row and column: This would return the $layout array like so: $layout[0][0] $layout[0][1] $layout[1][1] In this layout type: $layout[1][0] is NOT SET, or doesn't exist. Row 1, Column 0 doesn't exist in here. So how can we use this to help us determine the rowspans...? Ok, this layout type would now return the following: $layout[0][0] $layout[0][1] $layout[1][0] $layout[2][0] $layout[2][1] $layout[3][1] Again, there are some that are NOT SET in here: $layout[1][1] $layout[3][0] Ok, I have an array called $layout that does a foreach on the row and column, but it doesn't grab the rows and columns that are NOT SET. So I created a for loop (with the correct counts of how many rows there are and how many columns there are). Here's what I got so far: // $not_set = array(); for($x = 0; $x < $cols; $x++) { $f = 0; for($p = 0; $p < $rows; $p++) { // $f = count($layout[$p]); if(!isset($layout[$p][$x])) { $f++; // It could be a rowspan or a Colspan... // We need to figure out which 1 it is! /* $not_set[] = array( 'row' => $p, 'column' => $x, ); */ } // if ($rows - count($layout[$p])) } } Ok, the $layout array has 2 keys. The first 1 is [ row ] and the 2nd key is [ column ]. Now looping through them all and determining whether it's NOT SET, tells me that either a rowspan or a colspan needs to be put into something somewhere. I'm completely lost here. Basically, I would like to have an array returned here, something like this: $spans['row'][ row # ][ column # ] = Number of rowspans for that <td> element. $spans['column'][ row # ][ column # ] = Number of colspans for that <td> element. It's either going to need a colspan or a rowspan, it will definitely never need both for the same element. Am I going about this whole thing the wrong way? Any help at all would be greatly appreciated!! I've been driving myself crazy with this for days! Pllleaase...

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  • Creating same-width hit-zones on MenuItems in ASP.NET 2.0 Menus that include MenuItems added at runt

    - by Cary Jensen
    In an ASP.NET 2.0 application, I want to permit a user to select a MenuItem, even if the user does not click the actual text of the MenuItem, but instead only clicks the highlight area that ASP.NET places around the currently selected MenuItem (represented by the DynamicHoverStyle.BackColor property). Since the BackColor is displayed the same width for each MenuItem in a submenu, based on MenuItem with the longest text, I would like to make the hit-zone (clickable area) of each sub-MenuItem the same width (same at the BackColor area), regardless of how much text is displayed in the in each individual sub-MenuItem. Here's the setup. I am using a Menu on a MasterPage to display a similar menu on each of my pages. Some of the pages suppress this menu, and some of them add addition MenuItems, sometimes to the top level, sometimes adding sub-MenuItems to an existing top-level MenuItem, and sometimes both (adding a MenuItem to the top level and then additional MenuItems as submenuitems to that newly added top level. This menu has a horizontal orientation, and it is dynamic, in that only the top level is initially exposed, and the submenus are displayed when selected. During usability testing, we noticed that users would select a top-level menu item to expose the submenu, and then select a submenu item, but not by necessarily clicking on the submenu item text, but instead clicking on the BackColor area of the submenu item. Since the text of some MenuItems are longer than others, MenuItems with short Text have a rather large BackColor area. When the user clicks on the BackColor area, but not directly on the MenuItem Text, nothing happens, since the user didn't actually click on the submenu item hit zone. Although there are visual cues as to what part of the displayed MenuItem is clickable (the mouse pointer changes to a link cursor when the mouse is positioned on the MenuItem Text, but not when it is only hovering over the BackColor), this behavior confused the users. They highlighted a MenuItem, and clicked it, but nothing happened. I would to make clicking a MenuItem successful, even if the user did not click on the actual Text of the MenuItem, but simply click on the BackColor area. It seems like there should be a property somewhere to control the width of the active area of the displayed MenuItems, but I do not see it. Any suggestions, given that I am creating some of these MenuItems at runtime?

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  • bug/error in basis set path algorithm i can't figure out

    - by Roy McAvoy
    The following looks through a 2d array to find basis set paths. It is supposed to print out the individual paths but not repeat any and end when all paths are found. It however doesn't stop at the last path and has a bug in it somewhere in which the following happens: It goes halfway through the path and then goes to zero and ends the path for some reason. For example the table is filled with the following: all 0s, except for [1][2], [1][3], [2][4], [2][5], [3][5], [4][6], [5][6], [6][0] which all have a 1 in them. The desired paths are P1: 1 2 4 6 0 P2: 1 3 5 6 0 P3: 1 2 5 6 0. The output I get when i run the program is 12460 13560 1250 124 Any and all help on this is much appreciated, this is just the function that scans through the array looking for paths, I can add the entire program if that would be helpful. Thanks.. void find_path(int map[][MAX], int x){ int path =0; int m=1; int blah=0; bool path_found = false; do { for(int n=0;n<(x+1);n++){ if(map[m][n]==-1){ blah=(n+1); if(blah<(x+1)){ for(blah;blah<(x+1);blah++){ if(map[m][blah]==1){ map[m][blah]=-1; path=m; path_found = true; cout<<path; m=blah; n=0; } } } else{ path=m; path_found=false; cout<<path; m=n; if(m==0){ path=0; cout<<path<<endl; m=1; path_found=false; } } } else if(map[m][n]==1){ map[m][n]=-1; path=m; path_found = true; cout<<path; m=n; if(m==0){ path=0; cout<<path<<endl; m=1; path_found=false; } } } } while(m<(x+1) && path_found); }

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  • Cannot complete a JSONP call from jQuery to WCF

    - by Dusda
    Okay, I am trying (poorly) to successfully make a JSONP call from jQuery on a test page to a WCF web service running locally, as a cross-domain call. I have, at one point or another, either gotten a 1012 URI denied error, gotten a response but in Xml, or just had no response at all. Currently, the way I have it configured it spits back a 1012. I did not write this web service, so it is entirely possible that I am just missing a configuration setting somewhere, but I've become so frustrated with it that I think just asking on here will be more productive. Thanks guys. Details below. I have a WCF web service with the following method: [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public decimal GetOrderStatusJson(int jobId) I am trying to call this method from a jQuery test page, via a cross-domain JSONP call. <script type="text/javascript"> getJsonAjaxObject( "http://localhost:3960/ProcessRequests.svc/json/GetOrderStatusJson", { "jobId": 232 }); function getJsonAjaxObject(webServiceUrl, jsonData) { var request = { type: "POST", contentType: "application/json; charset=utf-8", url: webServiceUrl, data: jsonData, dataType: "jsonp", success: function(msg) { //success! alert("blah"); }, error: function() { //oh nos alert("bad blah"); } }; $.ajax(request); } </script> Below are the chunks of the web.config I configure for this purpose: <services> <service behaviorConfiguration="MWProcessRequestWCF.ProcessRequestsBehavior" name="MWProcessRequestWCF.ProcessRequests"> <endpoint address="json" behaviorConfiguration="AspNetAjaxBehavior" binding="webHttpBinding" contract="MWProcessRequestWCF.IProcessRequests" /> <endpoint address="" binding="wsHttpBinding" contract="MWProcessRequestWCF.IProcessRequests"> <identity> <dns value="localhost" /> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services> <behaviors> <serviceBehaviors> <behavior name="MWProcessRequestWCF.ProcessRequestsBehavior"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> <endpointBehaviors> <behavior name="AspNetAjaxBehavior"> <enableWebScript/> </behavior> </endpointBehaviors> </behaviors>

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  • Calculations in a table of data

    - by Christian W
    I have a table of data with survey results, and I want to do certain calculations on this data. The datastructure is somewhat like this: ____________________________________________________________________________________ | group |individual | key | key | key | | | |subkey|subkey|subkey|subkey|subkey|subkey|subkey|subkey|subkey| | | |q|q|q |q |q |q|q|q |q|q|q |q |q |q|q|q |q|q|q |q |q |q|q|q | |-------|-----------|-|-|--|--|---|-|-|--|-|-|--|--|---|-|-|--|-|-|--|--|---|-|-|--| | 1 | 0001 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 1 | 0002 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 1 | 0003 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 2 | 0004 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 2 | 0005 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 3 | 0006 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | | 4 | 0007 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 |1|7|5 |1 |3 |1|4|1 | ------------------------------------------------------------------------------------ Excuse my poor ascii skills... So, every individual belongs to a group, and has answered some questions. These questions are always grouped in keys and subkeys. Is there any simple method to calculate averages, deviations and similar based on the groupings. Something like public float getAverage(int key, int individual); float avg = getAverage(5,7); I think what I'm asking is what would be the best way to structure the data in C# to make it as easy as possible to work with? I have started making classes for every entity, but I got confused somewhere and something stopped working. So before I continue along this path, I was wondering if there are any other, better, ways of doing this? (Every individual can also have describing variables, like agegroup and such, but that's not important for the base functionality.) Our current solution does all calculations inline in the queries when requesting the data from the database. This works, but it's slow and the number of queries equals questions * individuals + keys * individuals, which could be alot if individual queries. Any suggestions?

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  • jQuery jScrollPane - it simply won't work! :'(

    - by Jack Webb-Heller
    Hey folks, OK - I'll admit, I'm quite a beginner in this jQuery-department. I've probably made some amateur mistake, but hey, you gotta learn somewhere! :) So I'm using jScrollPane: http://www.kelvinluck.com/assets/jquery/jScrollPane/jScrollPane.html I want to use it style the scrollable area in my second column. Specifically, I would like to apply and format the scrollbars on the div #ajaxresults My page is... rather jQuery heavy. I don't know if any variables are conflicting or something... in fact I really have no idea at all why this isn't working. Take a look at my problematic page: http://furnace.howcode.com In the header, I've set this to go: <!-- Includes for jScrollPane --> <script type="text/javascript" src="http://localhost:8888/js/jquery.mousewheel.min.js"></script> <script type="text/javascript" src="http://localhost:8888/js/jScrollPane.js"></script> <link rel="stylesheet" type="text/css" media="all" href="http://localhost:8888/stylesheets/jScrollPane.css" /> <script type="text/javascript"> $(function() { $('#ajaxresults').jScrollPane(); }); </script> (I've changed localhost on the server copy though) Nothing ever seems to work with the #ajaxresults div. I've set, as the jScrollPane docs say, overflow:auto on it but still no luck. I find that when jScrollPane DOES seem to 'run' it just moves the div down about 100 pixels. Try it for yourself. Perhaps someone could help? There's quite a few jQuery plugins there so I don't know if something's colliding/crashing etc... Please note the site is still in development between myself and a friend, which explains the personal messages we submit to each other ('Hi Donnie!' etc. :D ). Also, when you view the page nothing may appear in the second column for a few seconds - it's just fetching the data via Ajax. So give it a little time. Thanks very much! Jack

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  • Subroutine & GoTo design

    - by sub
    I have a strange question concerning subroutines: As I'm creating a minimal language and I don't want to add high-level loops like while or for I was planning on just adding gotos to keep it Turing-Complete. Now I thought, eww - gotos - I wouldn't want to program in that language if I had to use gotos so often. So I thought about adding subroutines instead. I see the difference as the following: gotos Go to (captain obvious) a previously defined point and continue executing the program from there. Leads to hardly understandable and buggy code, I think that's a fact. subroutines Similiar: You define their starting point somewhere, as you call them the program jumps there - but the subroutine can go back to the point it was called from with return. Okay. Why didn't I just add the more function-like, nice looking subroutines? Because: In order to make return work if I call subroutines from within subroutines from within other subroutines, I'd have to use a stack containing the point where the currently running subroutine came from at top. That would then mean that I would, if I create loops using the subroutines, end up with an extremely memory-eating, overflowing stack with return locations. Not good. Don't think of my subroutines as functions. They are just gotos that return to the point they were called from, they don't actually give back values like the return x; statement in nearly all today's languages. Now to my actual questions: How can I solve the above problem with the stack overflow on loops with subroutines? Do I have to add a separate goto language construct without the return option? Assembler doesn't have loops but as I have seen myJumpPoint:, jnz, jz, retn. That means to me that there must also be a stack containing all the return locations. Am I right with that? What about long running loops then? Don't they overflow the stack/eat memory then? Am I getting the retn symbol in assembler totally wrong? If yes, please explain it to me.

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  • Using PHP's IMAP library triggers Kaspersky's Antivirus

    - by TMG
    Hello, I just started today working with PHP's IMAP library, and while imap_fetchbody or imap_body are called, it is triggering my Kaspersky antivirus. The viruses are Trojan.Win32.Agent.dmyq and Trojan.Win32.FraudPack.aoda. I am running this off a local development machine with XAMPP and Kaspersky AV. Now, I am sure there are viruses there since there is spam in the box (who doesn't need a some viagra or vicodin these days?). And I know that since the raw body includes attachments and different mime-types, bad stuff can be in the body. So my question is: are there any risks using these libraries? I am assuming that the IMAP functions are retrieving the body, caching it to disk/memory and the AV scanning it sees the data. Is that correct? Are there any known security concerns using this library (I couldn't find any)? Does it clean up cached message parts perfectly or might viral files be sitting somewhere? Is there a better way to get plain text out of the body than this? Right now I am using the following code (credit to Kevin Steffer): function get_mime_type(&$structure) { $primary_mime_type = array("TEXT", "MULTIPART","MESSAGE", "APPLICATION", "AUDIO","IMAGE", "VIDEO", "OTHER"); if($structure->subtype) { return $primary_mime_type[(int) $structure->type] . '/' .$structure->subtype; } return "TEXT/PLAIN"; } function get_part($stream, $msg_number, $mime_type, $structure = false, $part_number = false) { if(!$structure) { $structure = imap_fetchstructure($stream, $msg_number); } if($structure) { if($mime_type == get_mime_type($structure)) { if(!$part_number) { $part_number = "1"; } $text = imap_fetchbody($stream, $msg_number, $part_number); if($structure->encoding == 3) { return imap_base64($text); } else if($structure->encoding == 4) { return imap_qprint($text); } else { return $text; } } if($structure->type == 1) /* multipart */ { while(list($index, $sub_structure) = each($structure->parts)) { if($part_number) { $prefix = $part_number . '.'; } $data = get_part($stream, $msg_number, $mime_type, $sub_structure,$prefix . ($index + 1)); if($data) { return $data; } } // END OF WHILE } // END OF MULTIPART } // END OF STRUTURE return false; } // END OF FUNCTION $connection = imap_open($server, $login, $password); $count = imap_num_msg($connection); for($i = 1; $i <= $count; $i++) { $header = imap_headerinfo($connection, $i); $from = $header->fromaddress; $to = $header->toaddress; $subject = $header->subject; $date = $header->date; $body = get_part($connection, $i, "TEXT/PLAIN"); }

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  • How to merge a "branch" that isn't really a branch (wasn't created by an svn copy)

    - by MatrixFrog
    I'm working on a team with lots of people who are pretty unfamiliar with the concepts of version control systems, and are just kind of doing whatever seems to work, by trial and error. Someone created a "branch" from the trunk that is not ancestrally related to the trunk. My guess is it went something like this: They created a folder in branches. They checked out all the code from the trunk to somewhere on their desktop. They added all that code to the newly created folder as though it was a bunch of brand new files. So the repository isn't aware that all that code is actually just a copy of the trunk. When I look at the history of that branch in TortoiseSVN, and uncheck the "Stop on copy/rename" box, there is no revision that has the trunk (or any other path) under the "Copy from path" column. Then they made lots of changes on their "branch". Meanwhile, others were making lots of changes on the trunk. We tried to do a merge and of course it doesn't work. Because, the trunk and the fake branch are not ancestrally related. I can see only two ways to resolve this: Go through the logs on the "branch", look at every change that was made, and manually apply each change to the trunk. Go through the logs on the trunk, look at every change that was made between revision 540 (when the "branch" was created) and HEAD, and manually apply each change to the "branch". This involves 7 revisions one way or 11 revisions the other way, so neither one is really that terrible. But is there any way to cause the repository to "realize" that the branch really IS ancestrally related even though it was created incorrectly, so that we can take advantage of the built-in merging functionality in Eclipse/TortoiseSVN? (You may be wondering: Why did your company hire these people and allow them to access the SVN repository without making sure they knew how to use it properly first?! We didn't -- this is a school assignment, which is a collaboration between two different classes -- the ones in the lower class were given a very quick hand-wavey "overview" of SVN which didn't really teach them anything. I've asked everyone in the group to please PLEASE read the svn book, and I'll make sure we (the slightly more experienced half of the team) keep a close eye on the repository to ensure this doesn't happen again.)

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  • XPathNavigator in Silverlight

    - by vladimir
    I have a code library that makes heavy use of XPathNavigator to parse some specific xml document. The xml document is cross-referenced, meaning that an element can reference another which has not yet been encountered during parsing: <ElementA ...> <DependentElementX id="1234"> </ElementA> <ElementX id="1234" .../> The document doesn't really look like this, but the point is that 1) there is an xml schema that enforces the overall document structure, 2) elements inside the document can reference each other using some IDs, and 3) there is quite a few such cross references between different elements in the document. The document is parsed in two phases. In the first pass I walk through the document XPathDocument doc = ...; XPathNavigator nav = doc.CreateNavigator(); nav.MoveToRoot(); nav.MoveToFirstChild()... and occasionally 'bookmark' the current position (element) in the document using XPathNavigator.Clone() method. This gives me a lightweight instance of an XPathNavigator which I can store somewhere and use later to jump back to a particular place (element) in my document. Once I have enough information collected in the first pass (for example, I have made sure there is indeed an ElementX with an id='1234'), I jump back to saved bookmarks (using those saved XPathNavigators) and complete the parsing. Well, now I'm about to use this library in Silverlight 3.0 and to my horror the XPathNavigator is not in the System.Xml assembly. Questions: 1) Am I missing something obvious (i.e. XPathNavigator does exist in some shape or form, for example in a toolkit or a freeware library)? 2) If I do have to make modifications in the code, what would be the best way to go? Ideally, I would like to make minimal changes, not to rewrite 80% of the code just to be able to use something like XLinq. To resume, in case I have to give up XPathNavigator, all I need is a way to bookmark places in my document and to get back to them so that I can continue to iterate from where I left off. Thanks in advance for any help/ideas.

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  • What to do when you need more verbs in REST

    - by Richard Levasseur
    There is another similar question to mine, but the discussion veered away from the problem I'm encounting. Say I have a system that deals with expense reports (ER). You can create and edit them, add attachments, and approve/reject them. An expense report might look like this: GET /er/1 => {"title": "Trip to NY", "totalcost": "400 USD", "comments": [ "john: Please add the total cost", "mike: done, can you approve it now?" ], "approvals": [ {"john": "Pending"}, {"finance-group": "Pending"}] } That looks fine, right? Thats what an expense report document looks like. If you want to update it, you can do this: POST /er/1 {"title": "Trip to NY 2010"} If you want to approve it, you can do this: POST /er/1/approval {"approved": true} But, what if you want to update the report and approve it at the same time? How do we do that? If you only wanted to approve, then doing a POST to something like /er/1/approval makes sense. We could put a flag in the URL, POST /er/1?approve=1, and send the data changes as the body, but that flag doesn't seem RESTful. We could put special field to be submitted, too, but that seems a bit hacky, too. If we did that, then why not send up data with attributes like set_title or add_to_cost? We could create a new resource for updating and approving, but (1) I can't think of how to name it without verbs, and (2) it doesn't seem right to name a resource based on what actions can be done to it (what happens if we add more actions?) We could have an X-Approve: True|False header, but headers seem like the wrong tool for the job. It'd also be difficult to get set headers without using javascript in a browser. We could use a custom media-type, application/approve+yes, but that seems no better than creating a new resource. We could create a temporary "batch operations" url, /er/1/batch/A. The client then sends multiple requests, perhaps POST /er/1/batch/A to update, then POST /er/1/batch/A/approval to approve, then POST /er/1/batch/A/status to end the batch. On the backend, the server queues up all the batch requests somewhere, then processes them in the same backend-transaction when it receives the "end batch processing" request. The downside with this is, obviously, that it introduces a lot of complexity. So, what is a good, general way to solve the problem of performing multiple actions in a single request? General because its easy to imagine additional actions that might be done in the same request: Suppress or send notifications (to email, chat, another system, whatever) Override some validation (maximum cost, names of dinner attendees) Trigger backend workflow that doesn't have a representation in the document.

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  • iPhone scrollView won't scroll after keyboard is closed

    - by Rob
    I was trying to implement a way to have the UITextField move up when the keyboard opened so that the user could see what they were typing but after implementing the code - it locks my scroll. The view will scroll when the user first gets to that view but after inputting text and closing the keyboard it locks the view. I suspect that it is a problem somewhere in this code: - (void) viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; NSLog(@"Registering for keyboard events"); // Register for the events [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector (keyboardDidShow:) name: UIKeyboardDidShowNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector (keyboardDidHide:) name: UIKeyboardDidHideNotification object:nil]; // Setup content size scrollView.contentSize = CGSizeMake(SCROLLVIEW_CONTENT_WIDTH, SCROLLVIEW_CONTENT_HEIGHT); //Initially the keyboard is hidden keyboardVisible = NO; } -(void) viewWillDisappear:(BOOL)animated { NSLog (@"Unregister for keyboard events"); [[NSNotificationCenter defaultCenter] removeObserver:self]; } //**-------------------------------** - (void) keyboardDidShow: (NSNotification *)notif { NSLog(@"Keyboard is visible"); // If keyboard is visible, return if (keyboardVisible) { NSLog(@"Keyboard is already visible. Ignore notification."); return; } // Get the size of the keyboard. NSDictionary* info = [notif userInfo]; NSValue* aValue = [info objectForKey:UIKeyboardBoundsUserInfoKey]; CGSize keyboardSize = [aValue CGRectValue].size; // Save the current location so we can restore // when keyboard is dismissed offset = scrollView.contentOffset; // Resize the scroll view to make room for the keyboard CGRect viewFrame = scrollView.frame; viewFrame.size.height -= keyboardSize.height; scrollView.frame = viewFrame; CGRect textFieldRect = [activeField frame]; textFieldRect.origin.y += 10; [scrollView scrollRectToVisible:textFieldRect animated:YES]; NSLog(@"ao fim"); // Keyboard is now visible keyboardVisible = YES; } -(void) keyboardDidHide: (NSNotification *)notif { // Is the keyboard already shown if (!keyboardVisible) { NSLog(@"Keyboard is already hidden. Ignore notification."); return; } // Reset the frame scroll view to its original value scrollView.frame = CGRectMake(0, 0, SCROLLVIEW_CONTENT_WIDTH, SCROLLVIEW_CONTENT_HEIGHT); // Reset the scrollview to previous location scrollView.contentOffset = offset; // Keyboard is no longer visible keyboardVisible = NO; } -(BOOL) textFieldShouldBeginEditing:(UITextField*)textField { activeField = textField; return YES; } I defined the size above the #imports as: #define SCROLLVIEW_CONTENT_HEIGHT 1000 #define SCROLLVIEW_CONTENT_WIDTH 320 Really not sure what the issue is.

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  • How to merge an improperly created "branch" that isn't really a branch (wasn't created by an svn cop

    - by MatrixFrog
    I'm working on a team with lots of people who are pretty unfamiliar with the concepts of version control systems, and are just kind of doing whatever seems to work, by trial and error. Someone created a "branch" from the trunk that is not ancestrally related to the trunk. My guess is it went something like this: They created a folder in branches. They checked out all the code from the trunk to somewhere on their desktop. They added all that code to the newly created folder as though it was a bunch of brand new files. So the repository isn't aware that all that code is actually just a copy of the trunk. When I look at the history of that branch in TortoiseSVN, and uncheck the "Stop on copy/rename" box, there is no revision that has the trunk (or any other path) under the "Copy from path" column. Then they made lots of changes on their "branch". Meanwhile, others were making lots of changes on the trunk. We tried to do a merge and of course it doesn't work. Because, the trunk and the fake branch are not ancestrally related. I can see only two ways to resolve this: Go through the logs on the "branch", look at every change that was made, and manually apply each change to the trunk. Go through the logs on the trunk, look at every change that was made between revision 540 (when the "branch" was created) and HEAD, and manually apply each change to the "branch". This involves 7 revisions one way or 11 revisions the other way, so neither one is really that terrible. But is there any way to cause the repository to "realize" that the branch really IS ancestrally related even though it was created incorrectly, so that we can take advantage of the built-in merging functionality in Eclipse/TortoiseSVN? (You may be wondering: Why did your company hire these people and allow them to access the SVN repository without making sure they knew how to use it properly first?! We didn't -- this is a school assignment, which is a collaboration between two different classes -- the ones in the lower class were given a very quick hand-wavey "overview" of SVN which didn't really teach them anything. I've asked everyone in the group to please PLEASE read the svn book, and I'll make sure we (the slightly more experienced half of the team) keep a close eye on the repository to ensure this doesn't happen again.)

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  • Boggling Direct3D9 dynamic vertex buffer Lock crash/post-lock failure on Intel GMA X3100.

    - by nj
    Hi, For starters I'm a fairly seasoned graphics programmer but as wel all know, everyone makes mistakes. Unfortunately the codebase is a bit too large to start throwing sensible snippets here and re-creating the whole situation in an isolated CPP/codebase is too tall an order -- for which I am sorry, do not have the time. I'll do my best to explain. B.t.w, I will of course supply specific pieces of code if someone wonders how I'm handling this-or-that! As with all resources in the D3DPOOL_DEFAULT pool, when the device context is taken away from you you'll sooner or later will have to reset your resources. I've built a mechanism to handle this for all relevant resources that's been working for years; but that fact nothingwithstanding I've of course checked, asserted and doubted any assumption since this bug came to light. What happens is as follows: I have a rather large dynamic vertex buffer, exact size 18874368 bytes. This buffer is locked (and discarded fully using the D3DLOCK_DISCARD flag) each frame prior to generating dynamic geometry (isosurface-related, f.y.i) to it. This works fine, until, of course, I start to reset. It might take 1 time, it might take 2 or it might take 5 resets to set off a bug that causes an access violation either on the pointer returned by the Lock() operation on the renewed resource or a plain crash -- regarding a somewhat similar address, but without the offset that it has tacked on to it in the first case because in that case we're somewhere halfway writing -- iside the D3D9 dll Lock() call. I've tested this on other hardware, upgraded my GMA X3100 drivers (using a MacBook with BootCamp) to the latest ones, but I can't reproduce it on any other machine and I'm at a loss about what's wrong here. I have tried to reproduce a similar situation with a similar buffer (I've got a large scratch pad of the same type I filled with quads) and beyond a certain amount of bytes it started to behave likewise. I'm not asking for a solution here but I'm very interested if there are other developers here who have battled with the same foe or maybe some who can point me in some insightful direction, maybe ask some questions that might shed a light on what I may or may not be overlooking. Another interesting artifact is that the vertex buffer starts to bug if I supply both D3DLOCK_DISCARD and D3DLOCK_NOOVERWRITE together which, even though not very logical (you're not going to overwrite if you've just discarded all), gives graphics glitches. Thanks and any corrections are more than welcome. Niels p.s - A friend of mine raised the valid point that it is a huge buffer for onboard video RAM and it's being at least double or triple buffered internally due to it's dynamic nature. On the other hand, the debug output (D3D9 debug DLL + max. warning output) remains silent. p.s 2 - Had it tested on more machines and still works -- it's probably a matter of circumstance: the huge dynamic, internally double/trippled buffered buffer, not a lot of memory and drivers that don't complain when they should.. Unless someone has a better suggestion; I'd still love to hear it :)

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  • How to build an offline web app using Flask?

    - by Rafael Alencar
    I'm prototyping an idea for a website that will use the HTML5 offline application cache for certain purposes. The website will be built with Python and Flask and that's where my main problem comes from: I'm working with those two for the first time, so I'm having a hard time getting the manifest file to work as expected. The issue is that I'm getting 404's from the static files included in the manifest file. The manifest itself seems to be downloaded correctly, but the files that it points to are not. This is what is spit out in the console when loading the page: Creating Application Cache with manifest http://127.0.0.1:5000/static/manifest.appcache offline-app:1 Application Cache Checking event offline-app:1 Application Cache Downloading event offline-app:1 Application Cache Progress event (0 of 2) http://127.0.0.1:5000/style.css offline-app:1 Application Cache Error event: Resource fetch failed (404) http://127.0.0.1:5000/style.css The error is in the last line. When the appcache fails even once, it stops the process completely and the offline cache doesn't work. This is how my files are structured: sandbox offline-app offline-app.py static manifest.appcache script.js style.css templates offline-app.html This is the content of offline-app.py: from flask import Flask, render_template app = Flask(__name__) @app.route('/offline-app') def offline_app(): return render_template('offline-app.html') if __name__ == '__main__': app.run(host='0.0.0.0', debug=True) This is what I have in offline-app.html: <!DOCTYPE html> <html manifest="{{ url_for('static', filename='manifest.appcache') }}"> <head> <title>Offline App Sandbox - main page</title> </head> <body> <h1>Welcome to the main page for the Offline App Sandbox!</h1> <p>Some placeholder text</p> </body> </html> This is my manifest.appcache file: CACHE MANIFEST /style.css /script.js I've tried having the manifest file in all different ways I could think of: CACHE MANIFEST /static/style.css /static/script.js or CACHE MANIFEST /offline-app/static/style.css /offline-app/static/script.js None of these worked. The same error was returned every time. I'm certain the issue here is how the server is serving up the files listed in the manifest. Those files are probably being looked up in the wrong place, I guess. I either should place them somewhere else or I need something different in the cache manifest, but I have no idea what. I couldn't find anything online about having HTML5 offline applications with Flask. Is anyone able to help me out?

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