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  • Getters and Setters are bad OO design?

    - by Dan
    Getters and Setters are bad Briefly reading over the above article I find that getters and setters are bad OO design and should be avoided as they go against Encapsulation and Data Hiding. As this is the case how can it be avoided when creating objects and how can one model objects to take this into account. In cases where a getter or setter is required what other alternatives can be used? Thanks.

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  • Organizing memcache keys

    - by Industrial
    Hi! Im trying to find a good way to handle memcache keys for storing, retrieving and updating data to/from the cache layer in a more civilized way. Found this pattern, which looks great, but how do I turn it into a functional part of a PHP application? The Identity Map pattern: http://martinfowler.com/eaaCatalog/identityMap.html Thanks!

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  • Unable to capture standard output of process using Boost.Process

    - by Chris Kaminski
    Currently am using Boost.Process from the Boost sandbox, and am having issues getting it to capture my standard output properly; wondering if someone can give me a second pair of eyeballs into what I might be doing wrong. I'm trying to take thumbnails out of RAW camera images using DCRAW (latest version), and capture them for conversion to QT QImage's. The process launch function: namespace bf = ::boost::filesystem; namespace bp = ::boost::process; QImage DCRawInterface::convertRawImage(string path) { // commandline: dcraw -e -c <srcfile> -> piped to stdout. if ( bf::exists( path ) ) { std::string exec = "bin\\dcraw.exe"; std::vector<std::string> args; args.push_back("-v"); args.push_back("-c"); args.push_back("-e"); args.push_back(path); bp::context ctx; ctx.stdout_behavior = bp::capture_stream(); bp::child c = bp::launch(exec, args, ctx); bp::pistream &is = c.get_stdout(); ofstream output("C:\\temp\\testcfk.jpg"); streamcopy(is, output); } return (NULL); } inline void streamcopy(std::istream& input, std::ostream& out) { char buffer[4096]; int i = 0; while (!input.eof() ) { memset(buffer, 0, sizeof(buffer)); int bytes = input.readsome(buffer, sizeof buffer); out.write(buffer, bytes); i++; } } Invoking the converter: DCRawInterface DcRaw; DcRaw.convertRawImage("test/CFK_2439.NEF"); The goal is to simply verify that I can copy the input stream to an output file. Currently, if I comment out the following line: args.push_back("-c"); then the thumbnail is written by DCRAW to the source directory with a name of CFK_2439.thumb.jpg, which proves to me that the process is getting invoked with the right arguments. What's not happening is connecting to the output pipe properly. FWIW: I'm performing this test on Windows XP under Eclipse 3.5/Latest MingW (GCC 4.4).

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  • Flex remoting and progress events?

    - by Cambiata
    Is there a way to monitor the loading progress (percent progress bar style) when using Flex remoting? I'm trying out Flash Builder 4 with it's new data services features, but I can't find any pgrogress event stuff somewhere. This article by Robert Taylor http://www.roboncode.com/articles/144 indicates that it might not be possible...

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  • How to deserialize an object with pyYaml using safe_load?

    - by systempuntoout
    Having a snippet like this: import yaml class User(object): def __init__(self, name, surname): self.name= name self.surname= surname user = User('spam', 'eggs') serialized_user = yaml.dump(user) #Network deserialized_user = yaml.load(serialized_user) print "name: %s, sname: %s" % (deserialized_user.name, deserialized_user.surname) Yaml docs says that it is not safe to call yaml.load with any data received from an untrusted source; so, what do i need to modify to my snippet\class to use safe_load method? Is it possible?

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  • iPhone UIImage upload to web service

    - by user347635
    Hi all, I worked on this for several hours today and I'm pretty close to a solution but clearly need some help from someone who's pulled this off. I'm trying to post an image to a web service from the iPhone. I'll post the code first then explain everything I've tried: NSData *imageData = UIImageJPEGRepresentation(barCodePic, .9); NSString *soapMsg = [NSString stringWithFormat: @"<?xml version=\"1.0\" encoding=\"utf-8\"?><soap:Envelope xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\"><soap:Body><WriteImage xmlns=\"http://myserver/imagewebservice/\"><ImgIn>%@</ImgIn></WriteImage></soap:Body></soap:Envelope>", [NSData dataWithData:imageData] ]; NSURL *url = [NSURL URLWithString:@"http://myserver/imagewebservice/service1.asmx"]; NSMutableURLRequest *req = [NSMutableURLRequest requestWithURL:url]; NSString *msgLength = [NSString stringWithFormat:@"%d", [soapMsg length]]; [req addValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"]; [req addValue:@"http://myserver/imagewebservice/WriteImage" forHTTPHeaderField:@"SOAPAction"]; [req addValue:msgLength forHTTPHeaderField:@"Content-Length"]; [req setHTTPMethod:@"POST"]; [req setHTTPBody: [soapMsg dataUsingEncoding:NSUTF8StringEncoding]]; conn = [[NSURLConnection alloc] initWithRequest:req delegate:self]; if (conn) { webData = [[NSMutableData data] retain]; } First thing, this code works fine for anything but an image. The web service is running on my local network and I can change the source code at will and if I change the "ImgIn" parameter to a string and pass a string in, everything works fine, I get a return value no problem. So there are no connectivity issues at all, I'm able to call and get data from this web service on this server no problems. But I need to upload an image to this web service via the ImgIn parameter, so the above code is my best shot so far. I also have didReceiveResponse, didReceiveData, didFailWithError, etc all being handled. The above code fires off didRecieveResponse every time. However didReceiveData is never fired and it's like the web service itself never even runs. When I debug the web service itself, it runs and debugs fine when I use a string parameter, but with the image parameter, it never even debugs when I call it. It's almost like the ImgIn parameter is too long (it's huge when I output it to the screen) and the web service just chokes on it. I've read about having to encode to Base64 when using this method, but I can't find any good links on how that's done. If that's what I'm doing wrong, can you PLEASE provide code as to how to do this, not just "you need to use Base64", I'd really appreciate it as I can find almost nothing on how to implement this with an example. Other than that, I'm kind of lost, it seems like I'm doing everything else right. Please help! Thanks

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  • Render a view as a string

    - by Dan Atkinson
    Hi all! I'm wanting to output two different views (one as a string that will be sent as an email), and the other the page displayed to a user. Is this possible in ASP.NET MVC beta? I've tried multiple examples: RenderPartial to String in ASP.NET MVC Beta If I use this example, I receive the "Cannot redirect after HTTP headers have been sent.". MVC Framework: Capturing the output of a view If I use this, I seem to be unable to do a redirectToAction, as it tries to render a view that may not exist. If I do return the view, it is completely messed up and doesn't look right at all. Does anyone have any ideas/solutions to these issues i have, or have any suggestions for better ones? Many thanks! Below is an example. What I'm trying to do is create the GetViewForEmail method: public ActionResult OrderResult(string ref) { //Get the order Order order = OrderService.GetOrder(ref); //The email helper would do the meat and veg by getting the view as a string //Pass the control name (OrderResultEmail) and the model (order) string emailView = GetViewForEmail("OrderResultEmail", order); //Email the order out EmailHelper(order, emailView); return View("OrderResult", order); } Accepted answer from Tim Scott (changed and formatted a little by me): public virtual string RenderViewToString( ControllerContext controllerContext, string viewPath, string masterPath, ViewDataDictionary viewData, TempDataDictionary tempData) { Stream filter = null; ViewPage viewPage = new ViewPage(); //Right, create our view viewPage.ViewContext = new ViewContext(controllerContext, new WebFormView(viewPath, masterPath), viewData, tempData); //Get the response context, flush it and get the response filter. var response = viewPage.ViewContext.HttpContext.Response; response.Flush(); var oldFilter = response.Filter; try { //Put a new filter into the response filter = new MemoryStream(); response.Filter = filter; //Now render the view into the memorystream and flush the response viewPage.ViewContext.View.Render(viewPage.ViewContext, viewPage.ViewContext.HttpContext.Response.Output); response.Flush(); //Now read the rendered view. filter.Position = 0; var reader = new StreamReader(filter, response.ContentEncoding); return reader.ReadToEnd(); } finally { //Clean up. if (filter != null) { filter.Dispose(); } //Now replace the response filter response.Filter = oldFilter; } } Example usage Assuming a call from the controller to get the order confirmation email, passing the Site.Master location. string myString = RenderViewToString(this.ControllerContext, "~/Views/Order/OrderResultEmail.aspx", "~/Views/Shared/Site.Master", this.ViewData, this.TempData);

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  • Is there a way to display formatted rich text in WPF datagrid?

    - by Greg R
    I'm trying to display rich text inside of a column of a WPF DataGrid (from WPF Toolkit). Something like this: Name: Bob Title: Doctor I am creating a data object programmatically in code with the string property. And I want this string to contain the rich text and than bind it to the column contents. Is that possible? Would really appreciate any help!

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  • Map denormalized hibernate

    - by Jurgen H
    I have a Summary class which contains a list of Qualities. A Quality contains a String name and int value. This data is stored in a denormalized db structure, one table only, for both Summary and Quality. Quality table: id, somefileds, qualityname1, qualityvalue1, qualityname2, qualityvalue2, qualityname3, qualityvalue3 For each quality name & value pairs, a new Quality object must be inserted in the Summary class. How to map this in hibernate (xml hibernate mapping)?

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  • Issues loading SWF with External SWF Files - using SWFObject and ExternalInterface

    - by wdense51
    I'm having issues with loading a SWF that references external SWF files... The main SWF loads fine if the HTML file is in the same folder as all the SWFs using the following code: <script type="text/javascript" src="../js/swfobject.js"></script> <script type="text/javascript"> var flashvars = {}; var params = { allowScriptAccess: "always" }; params.quality = "high"; params.wmode = "transparent"; var attributes = {id:"IDofSWF", name:"IDofSWF"}; swfobject.embedSWF("event_so_js.swf", "flashContent", "700", "400", "7.0.0", false, flashvars, params, attributes);</script> </head> <body> <div id="flashContent"> <object data="event_so_js.swf" name="IDofSWF" id="IDofSWF" type="application/x-shockwave-flash" width="700" height="400"></object></div> But as soon as I move the HTML file out of that folder to the root folder and update the links, it doesn't load correctly - it seems that it's having trouble with the external SWF files. I did have it successfully load one of the external SWF files directly, but it's having trouble with the main SWF. All of the SWF files are in the same folder, so I don't know why it's having issues. Here's the code for the HTML file when it's in the root folder: <script type="text/javascript" src="js/swfobject.js"></script> <script type="text/javascript"> var flashvars = {}; var params = { allowScriptAccess: "always" }; params.quality = "high"; params.wmode = "transparent"; var attributes = {id:"IDofSWF", name:"IDofSWF"}; swfobject.embedSWF("folio/event_so_js.swf", "flashContent", "700", "400", "9.0.0", false, flashvars, params, attributes);</script> </head> <body> <div id="flashContent"> <object data="folio/event_so_js.swf" name="IDofSWF" id="IDofSWF" type="application/x-shockwave-flash" width="700" height="400"></object></div> There is also a link on the page that calls a function in the actionscript using ExternalInterface, so it could be that causing the issues. The code for the link is: <a href="#" onclick="document.getElementById('IDofSWF').clicky()"> Any help would be awesome, because it's really confusing me.

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  • Implications of using many USB web cameras

    - by Martin
    I'm looking into connecting multiple low resolution USB webcams to a single computer. What implications might this have on performance? How does, for example, four 320x240 cameras fare against a single 640x480 camera? I'm not well versed in the architecture of the USB interface, what are the performance caveats? By performance I mean how would it affect the time to read the image data from multiple cameras compared to a single one.

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  • Selenium Testing

    - by Joakim
    Hi I want to get a bunch of dom-objects with xpath and loop through those to check if they contains a specified text, is this possible in the Selenium IDE or rc? Perl is my prefered language XPath would be something like xpath=//tbody[@class='table-data']/tr/td/div[@class='table-item'] This would return all row items in the table, but i need to check each div if contains a specified text string. Is this possible with Selenium? Best regards

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  • SQL - Order against two columns at the same time (intersecting)

    - by Alex
    I have a table with the fields CommonName and FirstName. Only either field has data, never both. Is there a way to order rows in an intersecting manner on SQL Server? Example: CommonName FirstName Bern Wade Ashley Boris Ayana I want records ordered like this: CommonName FirstName Ashley Ayana Bern Boris Wade Is this possible, and if so, how?

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  • Telnet connection using c#

    - by alejandrobog
    Our office currently uses telnet to query an external server. The procedure is something like this. Connect - telnet opent 128........ 25000 Query - we paste the query and then hit alt + 019 Response - We receive the response as text in the telnet window So I’m trying to make this queries automatic using a c# app. My code is the following First the connection. (No exceptions) SocketClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); String szIPSelected = txtIPAddress.Text; String szPort = txtPort.Text; int alPort = System.Convert.ToInt16(szPort, 10); System.Net.IPAddress remoteIPAddress = System.Net.IPAddress.Parse(szIPSelected); System.Net.IPEndPoint remoteEndPoint = new System.Net.IPEndPoint(remoteIPAddress, alPort); SocketClient.Connect(remoteEndPoint); Then I send the query (No exceptions) string data ="some query"; byte[] byData = System.Text.Encoding.ASCII.GetBytes(data); SocketClient.Send(byData); Then I try to receive the response byte[] buffer = new byte[10]; Receive(SocketClient, buffer, 0, buffer.Length, 10000); string str = Encoding.ASCII.GetString(buffer, 0, buffer.Length); txtDataRx.Text = str; public static void Receive(Socket socket, byte[] buffer, int offset, int size, int timeout) { int startTickCount = Environment.TickCount; int received = 0; // how many bytes is already received do { if (Environment.TickCount > startTickCount + timeout) throw new Exception("Timeout."); try { received += socket.Receive(buffer, offset + received, size - received, SocketFlags.None); } catch (SocketException ex) { if (ex.SocketErrorCode == SocketError.WouldBlock || ex.SocketErrorCode == SocketError.IOPending || ex.SocketErrorCode == SocketError.NoBufferSpaceAvailable) { // socket buffer is probably empty, wait and try again Thread.Sleep(30); } else throw ex; // any serious error occurr } } while (received < size); } Every time I try to receive the response I get "an exsiting connetion has forcibly closed by the remote host" if open telnet and send the same query I get a response right away Any ideas, or suggestions?

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  • Create flow diagram programmatically

    - by Julian Lettner
    I want to visualize components and connections of a HVAC system with .NET/C#. The diagrams will just include a few different components and their connections. They do not have to comply to any formal standard and should look alike the diagrams attached. In addition the user should be able to select a single component/connection (so that I can display additional data). Which free drawing/charting library would you use and why? Thanks for your time.

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  • How to ignore blank elements in linq query

    - by Maestro1024
    How to ignore blank elements in linq query I have a linq query var usersInDatabase = from user in licenseUserTable where user.FirstName == first_name && user.LastName == last_name select user; But if I get here and first_name or last_name is blank then I want to still evaluate the other data item.

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  • Codeigniter initializing multiple times per page load

    - by Clayton
    I'm using Codeigniter for my application and have something wrong with my configuration. When I load a page, the framework initializes several times (see logs below). I have built other applications with Codeigniter and have never seen this behavior before. Log output: DEBUG - 2010-03-27 14:50:32 --> Config Class Initialized DEBUG - 2010-03-27 14:50:32 --> Hooks Class Initialized DEBUG - 2010-03-27 14:50:32 --> URI Class Initialized DEBUG - 2010-03-27 14:50:32 --> Router Class Initialized DEBUG - 2010-03-27 14:50:32 --> Output Class Initialized DEBUG - 2010-03-27 14:50:32 --> Input Class Initialized DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> Global POST and COOKIE data sanitized DEBUG - 2010-03-27 14:50:32 --> Language Class Initialized DEBUG - 2010-03-27 14:50:32 --> Loader Class Initialized DEBUG - 2010-03-27 14:50:32 --> Config file loaded: config/redux_auth.php DEBUG - 2010-03-27 14:50:32 --> Config file loaded: config/email.php DEBUG - 2010-03-27 14:50:32 --> Helper loaded: url_helper DEBUG - 2010-03-27 14:50:32 --> Helper loaded: form_helper DEBUG - 2010-03-27 14:50:32 --> Helper loaded: html_helper DEBUG - 2010-03-27 14:50:32 --> Database Driver Class Initialized DEBUG - 2010-03-27 14:50:32 --> Session Class Initialized DEBUG - 2010-03-27 14:50:32 --> Helper loaded: string_helper DEBUG - 2010-03-27 14:50:32 --> Helper loaded: file_helper DEBUG - 2010-03-27 14:50:32 --> Session routines successfully run DEBUG - 2010-03-27 14:50:32 --> Form Validation Class Initialized DEBUG - 2010-03-27 14:50:32 --> Model Class Initialized DEBUG - 2010-03-27 14:50:32 --> Controller Class Initialized DEBUG - 2010-03-27 14:50:32 --> Language file loaded: language/english/form_validation_lang.php DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> Config Class Initialized DEBUG - 2010-03-27 14:50:32 --> Hooks Class Initialized DEBUG - 2010-03-27 14:50:32 --> URI Class Initialized DEBUG - 2010-03-27 14:50:32 --> Router Class Initialized DEBUG - 2010-03-27 14:50:32 --> Output Class Initialized DEBUG - 2010-03-27 14:50:32 --> Input Class Initialized DEBUG - 2010-03-27 14:50:32 --> XSS Filtering completed DEBUG - 2010-03-27 14:50:32 --> Global POST and COOKIE data sanitized DEBUG - 2010-03-27 14:50:32 --> Language Class Initialized DEBUG - 2010-03-27 14:50:32 --> Loader Class Initialized ... This repeats three more times

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  • Zend Framework -> Zend_Log via application.ini => insert() on a non-object error

    - by TaMeR
    I am trying to get logging via the application.ini file going and I am getting stuck with an error. resources.log.db.writerName = "Db" resources.log.db.writerParams.db.adapter = "PDO_SQLITE" resources.log.db.writerParams.db.dbname = ROOT "/data/tmp.db3" resources.log.db.writerParams.db.table = "logs" resources.log.db.writerParams.db.columnMap.priority = "priority" resources.log.db.writerParams.db.columnMap.message = "message" Fatal error: Call to a member function insert() on a non-object in /var/www/libs/zend/library/Zend/Log/Writer/Db.php on line 137

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  • WCF RIA Services Silverlight 3.0

    - by John
    Hi, I have downloaded WCF RIA Services Beta from the following website: WCF RIA Services Beta for Visual Studio 2008 SP1 http://www.microsoft.com/downloads/details.aspx?FamilyID=76bb3a07-3846-4564-b0c3-27972bcaabce&displaylang=en#filelist But I am unable to add a reference to the following assembly : system.Windows.Ria.Data I searched at the downloaded location c:\Program files\Microsoft SDK's\RIA Services but i am unable to find this dll. Would appreciate if you could point me what I am missing here.

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  • SimpleXML not pulling correct link

    - by kylex
    My code does not pull the proper link for the item. Instead it's getting the previous item's link. Any suggestions? Thanks! <?php // Load the XML data from the specified file name. // The second argument (NULL) allows us to specify additional libxml parameters, // we don't need this so we'll leave it as NULL. The third argument however is // important as it informs simplexml to handle the first parameter as a file name // rather than a XML formatted string. $pFile = new SimpleXMLElement("http://example.blogspot.com/feeds/posts/default?alt=rss", null, true); // Now that we've loaded our XML file we can begin to parse it. // We know that a channel element should be available within the, // document so we begin by looping through each channel foreach ($pFile->channel as $pChild) { // Now we want to loop through the items inside this channel { foreach ($pFile->channel->item as $pItem) { // If this item has child nodes as it should, // loop through them and print out the data foreach ($pItem->children() as $pChild) { // We can check the name of this node using the getName() method. // We can then use this information, to, for example, embolden // the title or format a link switch ($pChild->getName()) { case 'pubDate': $date = date('l, F d, Y', strtotime($pChild)); echo "<p class=\"blog_time\">$date</p>"; break; case 'link': $link = $pChild; break; case 'title': echo "<p class=\"blog_title\"><a href=\"$link\">$pChild</a></p>"; break; case 'description': // echo substr(strip_tags($pChild), 0 , 270) . "..."; break; case 'author': echo ""; break; case 'category': echo ""; break; case 'guid': echo ""; break; default: // echo strip_tags($pChild) . "<br />\n"; break; } } } } } ?>

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  • How to do parsing in Objective C?

    - by Tattat
    In Java, I can easily pass data using (ObjectA)objB. How can I do the similar things in Objective C? Also, why the Objective C can't return an Object, but only can return the id only? I do -(MyObj)returnMyObject{ }, but the Xcode warning me that I can't use the MyObj, but I can return the id..... -(id) returnMyObject {}.

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  • Accessing a dialog from Another dialog MFC

    - by Isuru
    Hi, I want to open a separate dialog box when I cllick on a button on my main dialog. I used separateDialog.DoModal() to do it. It open successfully but when I try to add data to a edit control (text box) in that seperate dialog, a debug assertion failure occurs. What is the matter and how can I overcome it? Thank You!!

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