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  • Some Async Socket Code - Help with Garbage Collection?

    - by divinci
    Hi all, I think this question is really about my understanding of Garbage collection and variable references. But I will go ahead and throw out some code for you to look at. // Please note do not use this code for async sockets, just to highlight my question // SocketTransport // This is a simple wrapper class that is used as the 'state' object // when performing Async Socket Reads/Writes public class SocketTransport { public Socket Socket; public byte[] Buffer; public SocketTransport(Socket socket, byte[] buffer) { this.Socket = socket; this.Buffer = buffer; } } // Entry point - creates a SocketTransport, then passes it as the state // object when Asyncly reading from the socket. public void ReadOne(Socket socket) { SocketTransport socketTransport_One = new SocketTransport(socket, new byte[10]); socketTransport_One.Socket.BeginRecieve ( socketTransport_One.Buffer, // Buffer to store data 0, // Buffer offset 10, // Read Length SocketFlags.None // SocketFlags new AsyncCallback(OnReadOne), // Callback when BeginRead completes socketTransport_One // 'state' object to pass to Callback. ); } public void OnReadOne(IAsyncResult ar) { SocketTransport socketTransport_One = ar.asyncState as SocketTransport; ProcessReadOneBuffer(socketTransport_One.Buffer); // Do processing // New Read // Create another! SocketTransport (what happens to first one?) SocketTransport socketTransport_Two = new SocketTransport(socket, new byte[10]); socketTransport_Two.Socket.BeginRecieve ( socketTransport_One.Buffer, 0, 10, SocketFlags.None new AsyncCallback(OnReadTwo), socketTransport_Two ); } public void OnReadTwo(IAsyncResult ar) { SocketTransport socketTransport_Two = ar.asyncState as SocketTransport; .............. So my question is: The first SocketTransport to be created (socketTransport_One) has a strong reference to a Socket object (lets call is ~SocketA~). Once the async read is completed, a new SocketTransport object is created (socketTransport_Two) also with a strong reference to ~SocketA~. Q1. Will socketTransport_One be collected by the garbage collector when method OnReadOne exits? Even though it still contains a strong reference to ~SocketA~ Thanks all!

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  • Form submitted via dialog opens dialog again

    - by VikingGoat
    I have a form in a jquerymobile dialog box that I am submitting via jQuery Ajax. Currently my problem is that once the form is submitted the same dialog box is opened again on top of the original dialogbox. So that my url reads before submission: url/index.php#&ui-state=dialog and then after submission: url/index.php#&ui-state=dialog#&ui-state=dialog&ui-state=dialog Has anyone ever encountered something like this before? [edit added code example] $(function(){ $("#form").submit(function(e){ e.preventDefault(); var dataString = $("#form").serialize(); errorInput = $("input[name=valOne]#valOne").val(); $.ajax({ type: "GET", url: "formHandler.php", data: dataString, dataType: "text", success: function(data){ if(data.toLowerCase().indexOf("error") >= 0){ alert(data); $(".ui-dialog").dialog("close"); $("#valOne").val(errorInput); //the reentering info so user doesn't have to }else{ $(".ui-dialog").dialog("close"); location.href="index.php"; } }, error:function (xhr, ajaxOptions, thrownError){ alert(thrownError); } }); }); });

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  • Ignoring build number when referencing dll

    - by brickner
    I have one solution with a .NET 4.0 project (C#) that produces a delayed signed dll, that I dotfuscate and sign. EDIT: This is how I version the dll: [assembly: AssemblyVersion("0.7.0.*")] [assembly: AssemblyFileVersion("0.7.0.0")] I have another solution with a .NET 4.0 project (C++/CLI) that references the signed dll and produces a signed dll (actually, delayed signed and signed in a post build because of a flaw in the C++ build system). The problem is that the reference to the dll contains a specific version number, which includes even the build number (I want to have a build number). Every time I build the referenced dll, I have to change the project settings file (.vcxproj) so it reference the new version dll. Since I work with source control, this is very inconvenient (different computers might have different build numbers since each computer build its own referenced dll - the referenced dll is not in the source control). If I don't change the reference, I get a warning: warning MSB3245: Could not resolve this reference. Could not locate the assembly... And many errors like this: error C3083: 'Foo': the symbol to the left of a '::' must be a type These are resolved once I change the reference. How do I make the reference ignore the build number or even the entire version number?

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  • Hierarchy / Flyweight / Instancing Problem in Python

    - by Dan
    Here is the problem I am trying to solve, (I have simplified the actual problem, but this should give you all the relevant information). I have a hierarchy like so: 1.A 1.B 1.C 2.A 3.D 4.B 5.F (This is hard to illustrate - each number is the parent, each letter is the child). Creating an instance of the 'letter' objects is expensive (IO, database costs, etc), so should only be done once. The hierarchy needs to be easy to navigate. Children in the hierarchy need to have just one parent. Modifying the contents of the letter objects should be possible directly from the objects in the hierarchy. There needs to be a central store containing all of the 'letter' objects (and only those in the hierarchy). 'letter' and 'number' objects need to be possible to create from a constructor (such as Letter(**kwargs) ). It is perfectably acceptable to expect that when a letter changes from the hierarchy, all other letters will respect the same change. Hope this isn't too abstract to illustrate the problem. What would be the best way of solving this? (Then I'll post my solution) Here's an example script: one = Number('one') a = Letter('a') one.addChild(a) two = Number('two') a = Letter('a') two.addChild(a) for child in one: child.method1() for child in two: print '%s' % child.method2()

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  • Class 'org.springframework.http.converter.ResourceHttpMessageConverter' not found - how to correct?

    - by Ash Kim
    Eclipse STS is reporting I have problem with my spring project. It's a fresh project generated from the Spring Web MVC Project Template (File-New-Spring Template Project-Spring Web MVC ). When I create the project it has no problems - it's only once I modify the pom (by adding the hibernate dependencies) that STS then picks up the spring problem. Strangely if I revert the pom the problem remains. Also I can run the project on a spring tc server and all works correctly. Any ideas how I can satisfy this problem report? "Class 'org.springframework.http.converter.ResourceHttpMessageConverter' not found" mvc-config.xml /src/main/webapp/WEB-INF/spring line 9 Spring Beans Problem mvc-config.xml: <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> <mvc:annotation-driven /> <!-- <= PROBLEMATIC LINE REPORTED BY STS --> <!-- Resolves view names to protected .jsp resources within the /WEB-INF/views directory --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"/> <property name="suffix" value=".jsp"/> </bean> </beans>

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  • Idiomatic way to build a custom structure from XML zipper in Clojure

    - by Checkers
    Say, I'm parsing an RSS feed and want to extract a subset of information from it. (def feed (-> "http://..." clojure.zip/xml-zip clojure.xml/parse)) I can get links and titles separately: (xml-> feed :channel :item :link text) (xml-> feed :channel :item :title text) However I can't figure out the way to extract them at the same time without traversing the zipper more than once, e.g. (let [feed (-> "http://..." clojure.zip/xml-zip clojure.xml/parse)] (zipmap (xml-> feed :channel :item :link text) (xml-> feed :channel :item :title text))) ...or a variation of thereof, involving mapping multiple sequences to a function that incrementally builds a map with, say, assoc. Not only I have to traverse the sequence multiple times, the sequences also have separate states, so elements must be "aligned", so to speak. That is, in a more complex case than RSS, a sub-element may be missing in particular element, making one of sequences shorter by one (there are no gaps). So the result may actually be incorrect. Is there a better way or is it, in fact, the way you do it in Clojure?

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  • php, user-uploaded files, version control, and website deployment

    - by user151841
    I have a website that I regularly update the code to. I keep it in version control. When I want to deploy a new version of the site, I do an export and then symlink the served directory name to the directory of the deployment. There is a place where users can upload files, and I noticed once that, after I had deployed a new version, the user files were gone! Of course, I hadn't added them to the repository, and since the served site was from an export, they weren't uploaded into a version-controlled directory anyways. PHP doesn't yet have integrated svn functionality, so I couldn't do much programmatically to user uploaded files. My solution was to create an additional website, files.website.com, which sits in a parallel directory to the served website, and is served out of a directory that is under version control. That way they don't get obliterated when I do an upgrade to the website. From time to time, I manually add uploaded files to the svn project, deleted user-deleted ones, and commit the new version. I'm working on a shell script to run from cron to do this, but it isn't my forte, so it's on the backburner as it's not a pressing need. Is there a better way to do this?

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  • Switching languages on a website with PHP

    - by jnkrois
    Hello everybody, I'm just looking for some advice. I'm creating a website that offers (at least) 2 languages. The way I'm setting it up is by using XML files for the language, PHP to retrieve the values in the XML nodes. Say you have any XML file, being loaded as follows: <?php $lang = "en"; $xmlFile = simplexml_load_file("$lang/main.xml"); ?> Once the file contents are available, I just output each node into an HTML tag like so: <li><?php echo $xmlFile->navigation->home; ?></li> which in turn is equal to : <li><a href="#">Home</a></li> as a nav bar link. Now, the way in which I'm switching languages is by changing the value of the "$lang" variable, through a "$_POST", like so: if(isset($_POST['es'])){ $lang = "es"; }elseif(isset($_POST['en'])){ $lang = "en"; } The value of the "$lang" variable is reset and the new file is loaded, loading as well all the new nodes from the new XML file, hence changing the language. I'm just wondering if there is another way to reset the "$lang" variable using something else, other than "$_POST" or "$_GET". I don't want to use query string either. I know I could use JavaScript or jQuery to achieve this, but I'd like to make the site not too dependable on JavaScript. I'd appreciate any ideas or advice. Thanks

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  • Our Flash Streaming Player Occasionally Stutters like a Skipping CD after a Period of Time

    - by Jonathan Fritz
    We offer a streaming player for a number of our clients, who are responsible for their providing us with their own audio streams. We have written a very simple flash player that can play all of the streams that we support (icecast/shoutcast/live365/mp3 over http/etc). Unfortunately, we have found that when listening, our player sometimes begins to stutter (like a skipping cd), sometimes after only 10 minutes, and sometimes after an hour of listening. We have noticed this behaviour in firefox on both linux and windows. Does anybody know anything about this problem? We know that flash isn't ideal for infinite streams of audio, but it's about all that we can find that's on every platform out there. If anybody can suggest a solution to our problem, I'll be your friend forever. Here is a link to the live player: http://cr-jf.jfritz.02.dev.wecreate.com/streaming/player_v5/ Note that you'll need to test in a browser that isn't IE, because we use WMP in IE, and that the JavaScript on the page will cause the player to unload and re-load once an hour because of memory issues. Because I can only put one hyperlink in a post, I'll add a link to the player source code as a comment. Thanks all!

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  • Passing data between ViewControllers versus doing local Fetch in each VC

    - by Tofrizer
    Hi All, I'm developing an iPhone app using Core Data and I'm looking for some general advice and recommendations on whether its acceptable to pass data between ViewControllers versus doing a local fetch in each ViewController as you navigate to it. Ordinarily I would say it all depends on various factors (e.g. performance etc) but the passing data approach is so prevalent in my app and I'm spooked by all the stories about Apple rejecting apps because of not conforming to their standard guidelines. So let me put another way -- is it non-standard to pass data between VC's? The reason I pass data so much is because each ViewController is just another view on to data present in my object model / graph. Once I have a handle on my first object in the first view controller (which I of course do have to fetch), I can use the existing object composition / relationships to drill down into the next level of detail into data and so I just pass these objects to the next VC. Separately, one possible downside with this passing-data-to-each-VC approach is I don't benefit from (what I perceive to be) the optimisation/benefits that NSFetchedResultsController provides in terms of efficient memory usage and section handling. My app is read-only but I do have one table with 5000 rows and I'm curious if I am missing out on NSFetchedResultsController benefits. Any thoughts on this as well? Can I somehow still benefit from NSFetchedResultsController goodness without having to do a full fetch (as I would have already passed in the data from my previous VC)? Thanks a lot.

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  • How would you go about parsing markdown?

    - by John Leidegren
    You can find the syntax here. The thing is, the source that follows with the download is written in perl. Which I have no intentions of honoring. It is riddled with regex and it relies on MD5 hashes to escape certain characters. Something is just wrong about that! I'm about to hard code a parser for markdown and I'm wonder if someone had some experience with this? Edit: If you don't have anything meaningful to say about the actual parsing of markdown, spare me the time. (This might sound harsh, but yes, I'm looking for insight, not a solution i.e. third-party library). To help a bit with the answers, regex are meant to identify patterns! NOT to parse an entire grammar. That people consider doing so is foobar. If you think about markdown, it's fundamentally based around the concept of paragraphs. As such, a reasonable approach might be to split the input into paragraphs. There are many kinds of paragraphs e.g. heading, text, list, blockquote, code. The challenge is thus to identify these paragraphs and in what context they occur. I'll be back with a solution, once I find it's worthy to be shared.

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  • InfoPath FormControl on STA worker thread

    - by Rob Ford
    I have a .NET class that exposes two public methods: one to create an InfoPath form and another to Export to one of the supported formats. I’m using the Microsoft FormControl to do this. It’s hosted by a Form that does not get displayed. I get called by a Winforms app, but on an MTA worker thread instead of the UI thread. So I create an STA thread and execute on that, which works exactly once and then results in this exception: System.InvalidOperationException was unhandled Message="Unable to get the window handle for the 'FormControl' control. Windowless ActiveX controls are not supported." Source="System.Windows.Forms" StackTrace: at System.Windows.Forms.AxHost.EnsureWindowPresent() at System.Windows.Forms.AxHost.InPlaceActivate() at System.Windows.Forms.AxHost.TransitionUpTo(Int32 state) at System.Windows.Forms.AxHost.CreateHandle() at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.AxHost.EndInit() at InfoPathCreateStaThreadTest.FormControlHost.InitializeComponent() in C:\Windows\Temp\InfoPathCreateStaThreadTest\InfoPathCreateStaThreadTest\FormControlHost.Designer.cs:line 65 After some experimenting, I started to suspect this is a message pumping problem. I then came across this, which makes me more strongly suspect so: http://blogs.msdn.com/cbrumme/archive/2004/02/02/66219.aspx I tried various methods of pumping messages with no luck. I should mention that the alternative of automating the InfoPath app is not viable unless I can figure out how to hide the app. Any help would be much appreciated.

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  • Can I stop the dbml designer from adding a connection string to the dbml file?

    - by drs9222
    We have a custom function AppSettings.GetConnectionString() which is always called to determine the connection string that should be used. How this function works is unimportant to the discussion. It suffices to say that it returns a connection string and I have to use it. I want my LINQ to SQL DataContext to use this so I removed all connection string informatin from the dbml file and created a partial class with a default constructor like this: public partial class SampleDataContext { public SampleDataContext() : base(AppSettings.GetConnectionString()) { } } This works fine until I use the designer to drag and drop a table into the diagram. The act of dragging a table into the diagram will do several unwanted things: A settings file will be created A app.config file will be created My dbml file will have the connection string embedded in it All of this is done before I even save the file! When I save the diagram the designer file is recreated and it will contain its own default constructor which uses the wrong connection string. Of course this means my DataContext now has two default constructors and I can't build anymore! I can undo all of these bad things but it is annoying. I have to manually remove the connection string and the new files after each change! Is there anyway I can stop the designer from making these changes without asking? EDIT The requirement to use the AppSettings.GetConnectionString() method was imposed on me rather late in the game. I used to use something very similar to what it generates for me. There are quite a few places that call the default constructor. I am aware that change them all to create the data context in another way (using a different constructor, static method, factory, ect..). That kind of change would only be slightly annoying since it would only have to be done once. However, I feel, that it is sidestepping the real issue. The dbml file and configuration files would still contain an incorrect, if unused, connection string which at best could confuse other developers.

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  • What guidelines should be followed when using an unstable/testing/stable branching scheme?

    - by Elliot
    My team is currently using feature branches while doing development. For each user story in our sprint, we create a branch and work it in isolation. Hence, according to Martin Fowler, we practice Continuous Building, not Continuous Integration. I am interested in promoting an unstable/testing/stable scheme, similar to that of Debian, so that code is promoted from unstable = testing = stable. Our definition of done, I'd recommend, is when unit tests pass (TDD always), minimal documentation is complete, automated functional tests pass, and feature has been demo'd and accepted by PO. Once accepted by the PO, the story will be merged into the testing branch. Our test developers spend most of their time in this branch banging on the software and continuously running our automated tests. This scares me, however, because commits from another incomplete story may now make it into the testing branch. Perhaps I'm missing something because this seems like an undesired consequence. So, if moving to a code promotion strategy to solve our problems with feature branches, what strategy/guidelines do you recommend? Thanks.

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  • Optimization in Python - do's, don'ts and rules of thumb.

    - by JV
    Well I was reading this post and then I came across a code which was: jokes=range(1000000) domain=[(0,(len(jokes)*2)-i-1) for i in range(0,len(jokes)*2)] I thought wouldn't it be better to calculate the value of len(jokes) once outside the list comprehension? Well I tried it and timed three codes jv@Pioneer:~$ python -m timeit -s 'jokes=range(1000000);domain=[(0,(len(jokes)*2)-i-1) for i in range(0,len(jokes)*2)]' 10000000 loops, best of 3: 0.0352 usec per loop jv@Pioneer:~$ python -m timeit -s 'jokes=range(1000000);l=len(jokes);domain=[(0,(l*2)-i-1) for i in range(0,l*2)]' 10000000 loops, best of 3: 0.0343 usec per loop jv@Pioneer:~$ python -m timeit -s 'jokes=range(1000000);l=len(jokes)*2;domain=[(0,l-i-1) for i in range(0,l)]' 10000000 loops, best of 3: 0.0333 usec per loop Observing the marginal difference 2.55% between the first and the second made me think - is the first list comprehension domain=[(0,(len(jokes)*2)-i-1) for i in range(0,len(jokes)*2)] optimized internally by python? or is 2.55% a big enough optimization (given that the len(jokes)=1000000)? If this is - What are the other implicit/internal optimizations in Python ? What are the developer's rules of thumb for optimization in Python? Edit1: Since most of the answers are "don't optimize, do it later if its slow" and I got some tips and links from Triptych and Ali A for the do's. I will change the question a bit and request for don'ts. Can we have some experiences from people who faced the 'slowness', what was the problem and how it was corrected? Edit2: For those who haven't here is an interesting read Edit3: Incorrect usage of timeit in question please see dF's answer for correct usage and hence timings for the three codes.

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  • What does the Excel VBA range.Rows property really do?

    - by RBarryYoung
    OK, I am finishing up an add-on project for a legacy Excel-VBA application, and I have once again run up against the conundrum of the mysterious range.Rows(?) and worksheet.Rows properties. Does anyone know what these properties really do and what they are supposed to provide to me? (note: all of this probably applies to the corresponding *.Columns properties also). What I would really like to be able to use it for is to return a range of rows, like this: SET rng = wks.Rows(iStartRow, iEndRow) But I have never been able to get it to do that, even though the Intellisense shows two arguments for it. Instead I have to use one of the two or three other (very kludgy) techniques. The help is very unhelpful (typically so for Office VBA), and googling for "Rows" is not very useful, no matter how many other terms I add to it. The only things that I have been able to use it for are 1) return a single row as a range ( rng.Rows(i) ) and 2) return a count of the rows in a range ( rng.Rows.Count ). Is that it? Is there really nothing else that it's good for? Clarification: I know that it returns a range and that there are other ways to get a range of rows. What I am asking for is specifically what do we get from .Rows() that we do not already get from .Cells() and .Range()? The two things that I know are 1) an easier way to return a range of a single row and 2) a way to count the number of rows in a range. Is there anything else?

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  • GL_COLOR_MATERIAL with lighting on Android

    - by kostmo
    It appears that glColorMaterial() is absent from OpenGL ES. According to this post (for iPhone), you may still enable GL_COLOR_MATERIAL in OpenGL ES 1.x, but you're stuck with the default settings of GL_FRONT_AND_BACK and GL_AMBIENT_AND_DIFFUSE that you would otherwise set with glColorMaterial(). I would be OK with this, but the diffuse lighting is not working correctly. I set up my scene and tested it with one light, setting glMaterialfv() for GL_AMBIENT and GL_DIFFUSE once in the initialization. The normals have been set correctly, and lighting works the way it's supposed to. I see the Gourad shading. With GL_LIGHTING disabled, the flat colors I have set with glColor4f() appear on the various objects in the scene. This also functions as expected. However, when glEnable(GL_COLOR_MATERIAL) is called, the flat colors remain. I would expect to see the lighting effects. What might be missing? glColorMaterial() is also mentioned on anddev.org, but I'm not sure if the information there is accurate. I'm testing this on an Android 2.1 handset (Motorola Droid). Edit: It works properly on my 1.6 handset (ADP1).

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  • JTextField vs JComboBox behaviour in JTable

    - by Ash
    Okay, this is a hard one to explain but I'll try my best. I have a JTextField and a JComboBox in a JTable, whose getCellEditor method has been overriden as follows: public TableCellEditor getCellEditor( int row, int column ) { if ( column == 3 ) { // m_table is the JTable if ( m_table.getSelectedRowCount() == 1 ) { JComboBox choices = new JComboBox(); choices.setEditable( true ); choices.addItem( new String( "item 1" ) ); return new DefaultCellEditor( choices ); } return super.getCellEditor( row, column ); } Here are the behavioral differences (NOTE that from this point on, when I say JTextField or JComboBox, I mean the CELL in the JTable containing either component): When I click once on a JTextField, the cell is highlighted. Double clicking brings up the caret and I can input text. Whereas, with a JComboBox, single clicking brings up the caret to input text, as well as the combo drop down button. When I tab or use the arrow keys to navigate to a JTextField and then start typing, the characters I type automatically get entered into the cell. Whereas, when I navigate to a JComboBox the same way and then start typing, nothing happens apart from the combo drop down button appearing. None of the characters I type get entered unless I hit F2 first. So here's my question: What do I need to do have JComboBoxes behave exactly like JTextFields in the two instances described above? Please do not ask why I'm doing what I'm doing or suggest alternatives (it's the way it is and I need to do it this way) and yes, I've read the API for all components in question....the problem is, it's a swing API. Thanks in advance, Ash

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  • Unable to use nMock GetProperty routine on a property of an inherited object...

    - by Chris
    I am getting this error when trying to set an expectation on an object I mocked that inherits from MembershipUser: ContactRepositoryTests.UpdateTest : FailedSystem.InvalidProgramException: JIT Compiler encountered an internal limitation. Server stack trace: at MockObjectType1.ToString() Exception rethrown at [0]: at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(ref MessageData msgData, Int32 type) at System.Object.ToString() at NMock2.Internal.ExpectationBuilder.On(Object receiver) Here are the tools I am using... VS2008 (SP1) Framework 3.5 nUnit 2.4.8 nMock 2.0.0.44 Resharper 4.1 I am at a loss as to why this would be happening. Any help would be appreciated. Test Class... [TestFixture] public class AddressRepositoryTests { private Mockery m_Mockery; private Data.IAddress m_MockDataAddress; private IUser m_MockUser; [SetUp] public void Setup() { m_Mockery = new Mockery(); m_MockDataAddress = m_Mockery.NewMock<Data.IAddress>(); m_MockUser = m_Mockery.NewMock<IUser>(); } [TearDown] public void TearDown() { m_Mockery.Dispose(); } [Test] public void CreateTest() { string line1 = "unitTestLine1"; string line2 = "unitTestLine2"; string city = "unitTestCity"; int stateId = 1893; string postalCode = "unitTestPostalCode"; int countryId = 223; bool active = false; int createdById = 1; Expect.Once .On(m_MockUser) .GetProperty("Identity") .Will(Return.Value(createdById)); Expect.Once .On(m_MockDataAddress) .Method("Insert") .With( line1, line2, city, stateId, postalCode, countryId, active, createdById, Is.Anything ) .Will(Return.Value(null)); IAddressRepository addressRepository = new AddressRepository(m_MockDataAddress); IAddress address = addressRepository.Create( line1, line2, city, stateId, postalCode, countryId, active, m_MockUser ); Assert.IsNull(address); } } User Class... public interface IUser { int? Identity { get; set; } int? CreatedBy { get; set; } DateTime CreatedOn { get; set; } int? ModifiedBy { get; set; } DateTime? ModifiedOn { get; set; } string UserName { get; } object ProviderUserKey { get; } string Email { get; set; } string PasswordQuestion { get; } string Comment { get; set; } bool IsApproved { get; set; } bool IsLockedOut { get; } DateTime LastLockoutDate { get; } DateTime CreationDate { get; } DateTime LastLoginDate { get; set; } DateTime LastActivityDate { get; set; } DateTime LastPasswordChangedDate { get; } bool IsOnline { get; } string ProviderName { get; } string ToString(); string GetPassword(); string GetPassword(string passwordAnswer); bool ChangePassword(string oldPassword, string newPassword); bool ChangePasswordQuestionAndAnswer(string password, string newPasswordQuestion, string newPasswordAnswer); string ResetPassword(string passwordAnswer); string ResetPassword(); bool UnlockUser(); } public class User : MembershipUser, IUser { #region Public Properties private int? m_Identity; public int? Identity { get { return m_Identity; } set { if (value <= 0) throw new Exception("Address.Identity must be greater than 0."); m_Identity = value; } } public int? CreatedBy { get; set; } private DateTime m_CreatedOn = DateTime.Now; public DateTime CreatedOn { get { return m_CreatedOn; } set { m_CreatedOn = value; } } public int? ModifiedBy { get; set; } public DateTime? ModifiedOn { get; set; } #endregion Public Properties #region Public Constructors public User() { } #endregion Public Constructors } Address Class... public interface IAddress { int? Identity { get; set; } string Line1 { get; set; } string Line2 { get; set; } string City { get; set; } string PostalCode { get; set; } bool Active { get; set; } int? CreatedBy { get; set; } DateTime CreatedOn { get; set; } int? ModifiedBy { get; set; } DateTime? ModifiedOn { get; set; } } public class Address : IAddress { #region Public Properties private int? m_Identity; public int? Identity { get { return m_Identity; } set { if (value <= 0) throw new Exception("Address.Identity must be greater than 0."); m_Identity = value; } } public string Line1 { get; set; } public string Line2 { get; set; } public string City { get; set; } public string PostalCode { get; set; } public bool Active { get; set; } public int? CreatedBy { get; set; } private DateTime m_CreatedOn = DateTime.Now; public DateTime CreatedOn { get { return m_CreatedOn; } set { m_CreatedOn = value; } } public int? ModifiedBy { get; set; } public DateTime? ModifiedOn { get; set; } #endregion Public Properties } AddressRepository Class... public interface IAddressRepository { IAddress Create(string line1, string line2, string city, int stateId, string postalCode, int countryId, bool active, IUser createdBy); } public class AddressRepository : IAddressRepository { #region Private Properties private Data.IAddress m_DataAddress; private Data.IAddress DataAddress { get { if (m_DataAddress == null) m_DataAddress = new Data.Address(); return m_DataAddress; } set { m_DataAddress = value; } } #endregion Private Properties #region Public Constructor public AddressRepository() { } public AddressRepository(Data.IAddress dataAddress) { DataAddress = dataAddress; } #endregion Public Constructor #region Public Methods public IAddress Create(string line1, string line2, string city, int stateId, string postalCode, int countryId, bool active, IUser createdBy) { if (String.IsNullOrEmpty(line1)) throw new Exception("You must enter a Address Line 1 to register."); if (String.IsNullOrEmpty(city)) throw new Exception("You must enter a City to register."); if (stateId <= 0) throw new Exception("You must select a State to register."); if (String.IsNullOrEmpty(postalCode)) throw new Exception("You must enter a Postal Code to register."); if (countryId <= 0) throw new Exception("You must select a Country to register."); DataSet dataSet = DataAddress.Insert( line1, line2, city, stateId, postalCode, countryId, active, createdBy.Identity, DateTime.Now ); return null; } #endregion Public Methods } DataAddress Class... public interface IAddress { DataSet GetByAddressId (int? AddressId); DataSet Update (int? AddressId, string Address1, string Address2, string City, int? StateId, string PostalCode, int? CountryId, bool? IsActive, Guid? ModifiedBy); DataSet Insert (string Address1, string Address2, string City, int? StateId, string PostalCode, int? CountryId, bool? IsActive, int? CreatedBy, DateTime? CreatedOn); } public class Address : IAddress { public DataSet GetByAddressId (int? AddressId) { Database database = DatabaseFactory.CreateDatabase(); DbCommand dbCommand = database.GetStoredProcCommand("prAddress_GetByAddressId"); DataSet dataSet; try { database.AddInParameter(dbCommand, "AddressId", DbType.Int32, AddressId); dataSet = database.ExecuteDataSet(dbCommand); } catch (SqlException sqlException) { string callMessage = "prAddress_GetByAddressId " + "@AddressId = " + AddressId; throw new Exception(callMessage, sqlException); } return dataSet; } public DataSet Update (int? AddressId, string Address1, string Address2, string City, int? StateId, string PostalCode, int? CountryId, bool? IsActive, Guid? ModifiedBy) { Database database = DatabaseFactory.CreateDatabase(); DbCommand dbCommand = database.GetStoredProcCommand("prAddress_Update"); DataSet dataSet; try { database.AddInParameter(dbCommand, "AddressId", DbType.Int32, AddressId); database.AddInParameter(dbCommand, "Address1", DbType.AnsiString, Address1); database.AddInParameter(dbCommand, "Address2", DbType.AnsiString, Address2); database.AddInParameter(dbCommand, "City", DbType.AnsiString, City); database.AddInParameter(dbCommand, "StateId", DbType.Int32, StateId); database.AddInParameter(dbCommand, "PostalCode", DbType.AnsiString, PostalCode); database.AddInParameter(dbCommand, "CountryId", DbType.Int32, CountryId); database.AddInParameter(dbCommand, "IsActive", DbType.Boolean, IsActive); database.AddInParameter(dbCommand, "ModifiedBy", DbType.Guid, ModifiedBy); dataSet = database.ExecuteDataSet(dbCommand); } catch (SqlException sqlException) { string callMessage = "prAddress_Update " + "@AddressId = " + AddressId + ", @Address1 = " + Address1 + ", @Address2 = " + Address2 + ", @City = " + City + ", @StateId = " + StateId + ", @PostalCode = " + PostalCode + ", @CountryId = " + CountryId + ", @IsActive = " + IsActive + ", @ModifiedBy = " + ModifiedBy; throw new Exception(callMessage, sqlException); } return dataSet; } public DataSet Insert (string Address1, string Address2, string City, int? StateId, string PostalCode, int? CountryId, bool? IsActive, int? CreatedBy, DateTime? CreatedOn) { Database database = DatabaseFactory.CreateDatabase(); DbCommand dbCommand = database.GetStoredProcCommand("prAddress_Insert"); DataSet dataSet; try { database.AddInParameter(dbCommand, "Address1", DbType.AnsiString, Address1); database.AddInParameter(dbCommand, "Address2", DbType.AnsiString, Address2); database.AddInParameter(dbCommand, "City", DbType.AnsiString, City); database.AddInParameter(dbCommand, "StateId", DbType.Int32, StateId); database.AddInParameter(dbCommand, "PostalCode", DbType.AnsiString, PostalCode); database.AddInParameter(dbCommand, "CountryId", DbType.Int32, CountryId); database.AddInParameter(dbCommand, "IsActive", DbType.Boolean, IsActive); database.AddInParameter(dbCommand, "CreatedBy", DbType.Int32, CreatedBy); database.AddInParameter(dbCommand, "CreatedOn", DbType.DateTime, CreatedOn); dataSet = database.ExecuteDataSet(dbCommand); } catch (SqlException sqlException) { string callMessage = "prAddress_Insert " + "@Address1 = " + Address1 + ", @Address2 = " + Address2 + ", @City = " + City + ", @StateId = " + StateId + ", @PostalCode = " + PostalCode + ", @CountryId = " + CountryId + ", @IsActive = " + IsActive + ", @CreatedBy = " + CreatedBy + ", @CreatedOn = " + CreatedOn; throw new Exception(callMessage, sqlException); } return dataSet; } }

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  • bad_alloc occuring when allocating small structs

    - by SalamiArmi
    A bad_alloc has started showing up in some code which looks perfectly valid to me and has worked very well in the past. The bad alloc only occurs once every 50-3000 iterations of the code, which is also confusing. The code itself is from a singly linked list, simply adding a new element to the queue: template<typename T> struct container { inline container() : next(0) {} container *next; T data; }; void push(const T &data) { container<T> *newQueueMember = new container<T>; //... unrelated to crash } Where T is: struct test { int m[256]; }; Changing the size of the array allocated array to anything but very small values (1-8 ints) still results in a bad_alloc occasionally. A few extra notes about my program: - I used Poco::ThreadPool to thread my program. I've only recently added this functionality, before I had it running with Win32 threads. However, only the main thread ever calls push(). - I am also occasionally getting other crashes which could be related. However, when I try to debug with visual studio 2008, I can't navigate back to the call stack, or the crash happens deep within new(). Thanks in advance.

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  • Speedup writing C programs using a subset of the Python syntax

    - by psihodelia
    I am constantly trying to optimize my time. Writing a C code takes a lot of time and requires much more keyboard touches than say writing a Python program. However, in order to speed up the time required to create a C program, one can automatize many things. I'd like to write my programs using smth. like Python but with C semantics. It means, all keywords are C keywords, but syntax is optimized. For example, this C code: #include "dsplib.h" #include "coeffs.h" #define MODULENAME "dsplib" #define NUM_SAMPLES 320 typedef float t_Vec; typedef struct s_Inter { char *pc_Name; struct s_Inter *px_Next; }t_Inter; typedef struct s_DspLibControl { t_Vec f_Y; }t_DspLibControl; void v_DspLibName(void) { printf("Module: %s", MODULENAME); printf("\n"); } int v_DspLibInitInterControl(t_DspLibControl *px_Con) { int y; px_Con->f_Y = 0.0; for(int i=0;i<10;i++) { y += i * i; } return y; } in optimized pythonized version can look like: include dsplib, coeffs define MODULENAME="dsplib", NUM_SAMPLES=320 typedef float t_Vec typedef struct s_Inter: char *pc_Name struct s_Inter *px_Next t_Inter typedef struct s_DspLibControl: t_Vec f_Y t_DspLibControl v_DspLibName(): printf("Module: %s", MODULENAME); printf("\n") int v_DspLibInitInterControl(t_DspLibControl *px_Con): int y px_Con->f_Y = 0.0 for int i=0;i<10;i++: y += i * i return y My question is: Do you know any VIM script, which allows to translate an original pythonized C code into a standard C code? For example, one is writing a C code but uses pythonized syntax, once she decides to translate pythonized blocks into standard C, she selects such blocks and press some key. And she doesn't save such pythonized code of course, VIM translates it into standard C.

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  • Loading external SWF with masked content - need width/height

    - by AZSL
    I am loading an external swf using the SWFLoader component. The swf that is being loaded is masked so that only a portion is being shown. However, when it's loaded the actual size of the swf (loader.content.width/loader.content.height) is the complete swf including the masked area. Therefore, the loaded swf does not display properly in the itemrenderer Is there a way to to grab the size of the just the masked area as opposed to getting the size of the entire swf's contents? One item to note that is complicating the issue, is that these are swf files that have already been created and there are many of them. In some instances, the size of the stage matches up with the size of the masked area. In other instances, the stage is larger (or possibly smaller) than the masked area movieclip as well as possibly the actual size of the movieclip (w/o the mask). I am currently loading the external swf in using a Loader. Once loaded, I make a copy (screen shot) of the swf by creating a bmp of the loader.content.This is done as I don't want to have any animations being shown on screen at this moment. I am setting the size of the bmp using using loader.content.width & loader.content.height. I then set the SWFLoader.source to the bitmap.

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  • Performance question: Inverting an array of pointers in-place vs array of values

    - by Anders
    The background for asking this question is that I am solving a linearized equation system (Ax=b), where A is a matrix (typically of dimension less than 100x100) and x and b are vectors. I am using a direct method, meaning that I first invert A, then find the solution by x=A^(-1)b. This step is repated in an iterative process until convergence. The way I'm doing it now, using a matrix library (MTL4): For every iteration I copy all coeffiecients of A (values) in to the matrix object, then invert. This the easiest and safest option. Using an array of pointers instead: For my particular case, the coefficients of A happen to be updated between each iteration. These coefficients are stored in different variables (some are arrays, some are not). Would there be a potential for performance gain if I set up A as an array containing pointers to these coefficient variables, then inverting A in-place? The nice thing about the last option is that once I have set up the pointers in A before the first iteration, I would not need to copy any values between successive iterations. The values which are pointed to in A would automatically be updated between iterations. So the performance question boils down to this, as I see it: - The matrix inversion process takes roughly the same amount of time, assuming de-referencing of pointers is non-expensive. - The array of pointers does not need the extra memory for matrix A containing values. - The array of pointers option does not have to copy all NxN values of A between each iteration. - The values that are pointed to the array of pointers option are generally NOT ordered in memory. Hopefully, all values lie relatively close in memory, but *A[0][1] is generally not next to *A[0][0] etc. Any comments to this? Will the last remark affect performance negatively, thus weighing up for the positive performance effects?

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  • Serial: write() throttling?

    - by damian
    Hi everyone, I'm working on a project sending serial data to control animation of LED lights, which need to stay in sync with a sound engine. There seems to be a large serial write buffer (OSX (POSIX) + FTDI chipset usb serial device), so without manually restricting the transmission rate, the animation system can get several seconds ahead of the serial transmission. Currently I'm manually restricting the serial write speed to the baudrate (8N1 = 10 bytes serial frame per 8 bytes data, 19200 bps serial - 1920 bytes per second max), but I am having a problem with the sound drifting out of sync over time - it starts fine, but after 10 minutes there's a noticeable (100ms+) lag between the sound and the lights. This is the code that's restricting the serial write speed (called once per animation frame, 'elapsed' is the duration of the current frame, 'baudrate' is the bps (19200)): void BufferedSerial::update( float elapsed ) { baud_timer += elapsed; if ( bytes_written > 1024 ) { // maintain baudrate float time_should_have_taken = (float(bytes_written)*10)/float(baudrate); float time_actually_took = baud_timer; // sleep if we have > 20ms lag between serial transmit and our write calls if ( time_should_have_taken-time_actually_took > 0.02f ) { float sleep_time = time_should_have_taken - time_actually_took; int sleep_time_us = sleep_time*1000.0f*1000.0f; //printf("BufferedSerial::update sleeping %i ms\n", sleep_time_us/1000 ); delayUs( sleep_time_us ); // subtract 128 bytes bytes_written -= 128; // subtract the time it should have taken to write 128 bytes baud_timer -= (float(128)*10)/float(baudrate); } } } Clearly there's something wrong, somewhere. A much better approach would be to be able to determine the number of bytes currently in the transmit queue, and try and keep that below a fixed threshold. Any advice appreciated.

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  • How do I get ASP.NET login status controls to display a Log In option?

    - by Greg McNulty
    I have the following log in status controls on the top of my master page. It displays the logged in as, manager log in, and Log out options. However, when a user is not logged in, there is nothing displayed there. When the user is NOT logged in, is there a way to display a "Login" text link that takes you to the log in page and then "disappears" once the user is logged in? Any help is appreciated. Thanks! <asp:LoginName ID="LoginName1" runat="server" FormatString="Logged in as {0}" ForeColor="Aqua" /> <asp:LoginView ID="LoginView1" runat="server"> <RoleGroups> <asp:RoleGroup Roles="Managers"> <ContentTemplate> <asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl="~/Management/management.aspx">Manage Site</asp:HyperLink> or <asp:LoginStatus id="LoginStatus1" runat="server" /> </ContentTemplate> </asp:RoleGroup> </RoleGroups> <LoggedInTemplate> (<asp:LoginStatus id="LoginStatus1" runat="server" />) </LoggedInTemplate> </asp:LoginView> ASP.NET 3.5 VWD 2008 C#

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