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  • jQuery datepicker returns "inst is null" error when loaded via AJAX

    - by Robert
    I'm loading content via an AJAX call into a table row added to the DOM on the fly. I'm calling the datepicker functionality in my callback function and the calendar shows fine. However, when I click on the date, I get an error: inst is null. Here's my code: $(document).ready(function() { $(".edit").live("click", function() { //Delete previously loaded edit row $("#tempEditRow").remove(); //Get the record id of the row to be edited var recordID = $(this).parent("td").parent("tr").attr("id"); //Add the new row to the document $(this).parent("td").parent("tr").after("<tr id=\"tempEditRow\"><td id=\"tempEditCell\" colspan=\"100\"></td></tr>") //Get a reference to the new row var container = $("#tempEditCell"); //Populate the container populateContainer("/wpm/includes/ajax_editApplication.cfm?id=" + recordID, container); }); }); function populateContainer(ajaxUrl, container) { //Populate the container $.ajax({ url: ajaxUrl, cache: false, success: function(html){ $(container).html(html); $('.datepicker').datepicker(); } }); } I've tried deleting the hasDatepicker class, deleting any references to the datepicker, etc. but nothing is working. Thanks in advance for helping!

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  • How to dispose a Writeable Bitmap? (WPF)

    - by Mario
    Some time ago i posted a question related to a WriteableBitmap memory leak, and though I received wonderful tips related to the problem, I still think there is a serious bug / (mistake made by me) / (Confusion) / (some other thing) here. So, here is my problem again: Suppose we have a WPF application with an Image and a button. The image's source is a really big bitmap (3600 * 4800 px), when it's shown at runtime the applicaton consumes ~90 MB. Now suppose i wish to instantiate a WriteableBitmap from the source of the image (the really big Image), when this happens the applications consumes ~220 MB. Now comes the tricky part, when the modifications to the image (through the WriteableBitmap) end, and all the references to the WriteableBitmap (at least those that I'm aware of) are destroyed (at the end of a method or by setting them to null) the memory used by the writeableBitmap should be freed and the application consumption should return to ~90 MB. The problem is that sometimes it returns, sometimes it does not. Here is a sample code: // The Image's source whas set previous to this event private void buttonTest_Click(object sender, RoutedEventArgs e) { if (image.Source != null) { WriteableBitmap bitmap = new WriteableBitmap((BitmapSource)image.Source); bitmap.Lock(); bitmap.Unlock(); //image.Source = null; bitmap = null; } } As you can see the reference is local and the memory should be released at the end of the method (Or when the Garbage collector decides to do so). However, the app could consume ~224 MB until the end of the universe. Any help would be great.

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  • InterIMAP, Viewing UNREAD IMAP mail and Downloading Attachments in C#

    - by Erika
    I was wondering if anyone can help me on this cause its driving me mad trying get this working I was working with the trail of mail.dll from http://www.lesnikowski.com/mail/ which is an extremely fantastic tool which unfortunately i cannot afford being a student (even though its around 150eur, its still very expensive to me :/) and this would be a small module in my thesis and my faculty cannot afford to buy these things for students either :/ so anyway I had to go for a free tool (so please dont suggest any non open source ones - trust me i have tried them ALL).. Well, i'm trying to explore InterIMAP, and for several hours have been trying to list unread emails from my gmail account but it just doesn't seem to be working. I can connect just fine but finding the unread emails seems to be no easy task.. I have tried countless approaches but non seem to give me unread emails in my inbox (I have loads of emails in my inbox and i just want the unread ones). Would someone please assist me? I have been trying to get this working for ages now, but documentation is rather lacking and my every attempt has resulted in a fail so far. Please help!! Some code i currently have: ` IMAPConfig config = new IMAPConfig("myhost", "username", "pass", true, true, ""); config.CacheFile = ""; IMAPClient client = null; try { client = new IMAPClient(config, null, 5); } catch (IMAPException e) { Console.WriteLine(e.Message); return; } Console.WriteLine(DateTime.Now.ToString()); IMAPFolder f = client.Folders["INBOX"]; IMAPSearchResult sResult = f.Search(IMAPSearchQuery.QuickSearchNew()); // <--- Gives me no results even though i do have unread messages!

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  • Making a Text-To-Speech Wrapper in Android

    - by John Montgomery
    I am attempting to create a wrapper class for Google Android's Text-To-Speech functionality. However, I'm having trouble finding a way to have the system pause until after the onInit function has finished. Attached at the bottom is something of a solution I created based on what I found here: http://stackoverflow.com/questions/1160876/android-speech-how-can-you-read-text-in-android However, this solution does not seem to work. Any thoughts on why this might not be working, or what would be a good idea in order to make sure that any Speak() calls happen after my onInit() call? public class SpeechSynth implements OnInitListener { private TextToSpeech tts; static final int TTS_CHECK_CODE = 0; private int ready = 0; private ReentrantLock waitForInitLock = new ReentrantLock(); SpeechSynth( Activity screen ) { ready = 0; tts = new TextToSpeech( screen, this ); waitForInitLock.lock(); } public void onInit(int status) { if (status == TextToSpeech.SUCCESS) { ready = 1; } waitForInitLock.unlock(); } public int Speak( String text ) { if( ready == 1 ) { tts.speak(text, TextToSpeech.QUEUE_ADD, null); return 1; } else { return 0; } } } I have been able to make it so that I can pass a string of text through the constructor, then have it played in the onInit() function. However, I would really like to avoid having to destroy and re-create the whole text-to-speech engine every time I need to have my program say something different.

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  • Save HTML to Pdf ABCPdf 4

    - by daisy
    Hello All, I'm using following code to save html to pdf file. But it fails to compile at if (!theDoc.Chainable(theID)). I do have using WebSupergoo.ABCpdf4; added at the begining of the code. Is this version issue? Is there any other method to save HTML string to pdf file in ABCPdf 4. Error Message is "'WebSupergoo.ABCpdf4.Doc' does not contain a definition for 'Chainable' and no extension method 'Chainable' accepting a first argument of type 'WebSupergoo.ABCpdf4.Doc' could be found (are you missing a using directive or an assembly reference?) Doc theDoc = new Doc(); theDoc.Rect.Inset(10, 50); theDoc.Page = theDoc.AddPage(); int theID; theID = theDoc.AddImageHtml(str); while (true) { if (!theDoc.Chainable(theID)) break; theDoc.Page = theDoc.AddPage(); theID = theDoc.AddImageToChain(theID); } for (int i = 1; i <= theDoc.PageCount; i++) { theDoc.PageNumber = i; theDoc.Flatten(); } theDoc.Save("path where u want 2 save" + ".pdf"); theDoc.Clear(); All the help is appreciated.

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  • error: unable to open database file, SQLiteException was unhandled

    - by rose
    My project has a reference to SQLite.Interop.066.dll and even after putting in the correct path to the SQLite database, the application is still unable to find it. A SQLiteException was unhandled is returned. SQLiteConnection conn = new SQLiteConnection(); //SQLiteDataAdapter da; SQLiteCommandBuilder cb; DataTable dt=new DataTable(); int row = 0; conn.ConnectionString = "Data Source=C:\\database\\info"; conn.Open(); DataRow dr = dt.NewRow(); dr["name"] = txtName.Text; dr["address"] = txtAddress.Text; dr["phone"] = txtPhone.Text; dr["position"] = txtPosition.Text; dt.Rows.Add(dr); da.Update(dt); row = dt.Rows.Count - 1; txtName.Text = dt.Rows[row]["name"].ToString(); txtAddress.Text = dt.Rows[row]["address"].ToString(); txtPhone.Text = dt.Rows[row]["phone"].ToString(); txtPosition.Text = dt.Rows[row]["position"].ToString(); da.Fill(dt); cb = new SQLiteCommandBuilder(da); conn.Dispose(); conn.Close(); The exception occur at line: conn.Open(); sorry for the mistake title error before...

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  • Issue with VS 2008 designer and usercontrol.

    - by Ram
    Hello, I have created a custom data grid control. I dragged it on windows form and set its properties like column and all & ran the project. It built successfully and I am able to view the grid control on the form. Now if i try to view that form in designer, I am getting following error.. Object reference not set to an instance of an object. Instances of this error (1) 1. Hide Call Stack at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.GetMemberTargetObject(XmlElementData xmlElementData, String& member) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.CreateAssignStatement(XmlElementData xmlElement) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.XmlElementData.get_CodeDomElement() at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.EndElement(String prefix, String name, String urn) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.Parse(XmlReader reader) at Microsoft.VisualStudio.Design.Serialization.CodeDom.XML.CodeDomXmlProcessor.ParseXml(String xmlStream, CodeStatementCollection statementCollection, String fileName, String methodName) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomParser.OnMethodPopulateStatements(Object sender, EventArgs e) at System.CodeDom.CodeMemberMethod.get_Statements() at System.ComponentModel.Design.Serialization.TypeCodeDomSerializer.Deserialize(IDesignerSerializationManager manager, CodeTypeDeclaration declaration) at System.ComponentModel.Design.Serialization.CodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager manager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager) at Microsoft.VisualStudio.Design.Serialization.CodeDom.VSCodeDomDesignerLoader.DeferredLoadHandler.Microsoft.VisualStudio.TextManager.Interop.IVsTextBufferDataEvents.OnLoadCompleted(Int32 fReload) If I ignore the exception, form appears blank with no sign of grid control on it. However I can see the code for the grid in the designer file. Any pointer on this would be a great help.

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  • Scrolling a Canvas smoothly in Android

    - by prepbgg
    I'm new to Android. I am drawing bitmaps, lines and shapes onto a Canvas inside the OnDraw(Canvas canvas) method of my view. I am looking for help on how to implement smooth scrolling in response to a drag by the user. I have searched but not found any tutorials to help me with this. The reference for Canvas seems to say that if a Canvas is constructed from a Bitmap (called bmpBuffer, say) then anything drawn on the Canvas is also drawn on bmpBuffer. Would it be possible to use bmpBuffer to implement a scroll ... perhaps copy it back to the Canvas shifted by a few pixels at a time? But if I use Canvas.drawBitmap to draw bmpBuffer back to Canvas shifted by a few pixels, won't bmpBuffer be corrupted? Perhaps, therefore, I should copy bmpBuffer to bmpBuffer2 then draw bmpBuffer2 back to the Canvas. A more straightforward approach would be to draw the lines, shapes, etc. straight into a buffer Bitmap then draw that buffer (with a shift) onto the Canvas but so far as I can see the various methods: drawLine(), drawShape() and so on are not available for drawing to a Bitmap ... only to a Canvas. Could I have 2 Canvases? One of which would be constructed from the buffer bitmap and used simply for plotting the lines, shapes, etc. and then the buffer bitmap would be drawn onto the other Canvas for display in the View? I should welcome any advice! Answers to similar questions here (and on other websites) refer to "blitting". I understand the concept but can't find anything about "blit" or "bitblt" in the Android documentation. Are Canvas.drawBitmap and Bitmap.Copy Android's equivalents?

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  • How did the Lunar Lander example make the image backgrounds transparent?

    - by user279112
    Hello. I'm trying to make a GUI program with the Android SDK, using their Lunar Lander example as a significant self-teaching tool in the process. I've noticed their sprites' images' backgrounds, which were at least usually pure white, did not show up in their program. I want to ask how they did that, since their site doesn't explain simple things very well. I've managed to pull that off before on another GUI SDK, wherein all I had to do was to call a function and pass it a few floats to define a certain color, and until my code told it to do otherwise, that function would make sure that that particular color in my sprites' images was totally transparent. However I've wrestled with the Lunar Lander example and getting my own program to show some custom graphics for a week or two now, and I haven't noticed any such function call in the Lunar Lander example. I tried to look for it, but I did not find anything. I've tried to Google some tutorial or other reference material, but what I've found so far is just straying off into unrelated areas and totally dodging this EXTREMELY important lesson on the SDK's basics. Any ideas? Thanks!

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  • Customizing doxygen output for the HTML Table of Contents

    - by ILR
    I'm using doxygen to generate an API reference from source code, aiming to convert it into a CHM help file and eventually into a plugin for Eclipse. Unfortunately the default ordering and nesting of the classes, namespaces, etc. in the Table of Contents is not exactly ideal and I'd prefer to customize it if possible. By default, doxygen creates two indexes/menus for navigating the generated documentation. One is the common Table of Contents on the left frame and the other is the row of buttons at the top of each individual HTML page. The latter can be comfortably customized by editing the layout xml file as described in doxygen manual (see section 'Changing the layout of pages') but so far I've seen no way to do similar modifications for the Table of Contents. To use a precise example, I'm looking for a way to nest the three standard topics Class List, Class Hierarchy, and Class Members as subtopics inside a parent topic in the TOC, as is done by default in the menu system that's located on top of every page. I'd imagine this is not the most unusual issue and may have a known solution available. Thanks for your assistance!

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  • .NET SAP Connection Authentication via WEB Service

    - by mehmet6parmak
    Hi, I am trying to connect to a web service served by SAP and i have authentication problem. I simply added the service by right clicking project, selecting add service reference, giving WSDL url for the service and clicking OK.(After clicking ok asked for credentials and i provided them) Then when i tried to call a method from the serviceclien object i got the error message below: The HTTP request is unauthorized with client authentication scheme 'Anonymous'. The authentication header received from the server was 'Basic realm="SAP Web Application Server <hostname>"'. Web Config Related Part: <basicHttpBinding> <binding name="binding" closeTimeout="00:01:00" openTimeout="00:01:00" receiveTimeout="00:10:00" sendTimeout="00:01:00" allowCookies="false" bypassProxyOnLocal="false" hostNameComparisonMode="StrongWildcard" maxBufferSize="65536" maxBufferPoolSize="524288" maxReceivedMessageSize="65536" messageEncoding="Text" textEncoding="utf-8" transferMode="Buffered" useDefaultWebProxy="true"> <readerQuotas maxDepth="32" maxStringContentLength="8192" maxArrayLength="16384" maxBytesPerRead="4096" maxNameTableCharCount="16384" /> <security mode="None"> <transport clientCredentialType="None" proxyCredentialType="None" realm=""> <extendedProtectionPolicy policyEnforcement="Never" /> </transport> <message clientCredentialType="UserName" algorithmSuite="Default" /> </security> </binding> Also, What problems will i face with? I do not want to use SAP .NET Connector. Thanks...

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  • How to access Actionscript from Javascript in Adobe AIR

    - by David Robinson
    I have an AIR application written in html/javascript and I want to use the Actionscript print functions but I have no experience in Actionscript for AIR. Where do I put the Actionscript code ? Does it go into an mxml file or does it need to be compiled into a Flash application. Where do I put it and how do I include it into the html document ? Finally, how do I call the AS function from Javascript ? =====update===== I know I have to compile either an .mxml or .as file into .swf using mxmlc and I have the following in my .as file: package { import mx.controls.Alert; public class HelloWorld { public function HelloWorld():void { trace("Hello, world!"); } } } Or alternately, this in a .mxml file: <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Script> <![CDATA[ import mx.controls.Alert; public function HelloWorld():void { Alert.show("hello world!"); trace("Hello, world!"); } ]]> </mx:Script> </mx:Application> This compiles OK, but when I include it in a html file with: <script src="actionscript.swf" type="application/x-shockwave-flash"></script> I get the following error: TypeError: Error #1009: Cannot access a property or method of a null object reference. at mx.managers::FocusManager/activate() at mx.managers::SystemManager/activateForm() at mx.managers::SystemManager/activate() at mx.core::Application/initManagers() at mx.core::Application/initialize() at actionscript/initialize() at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::childAdded() at mx.managers::SystemManager/initializeTopLevelWindow() at mx.managers::SystemManager/http://www.adobe.com/2006/flex/mx/internal::docFrameHandler() at mx.managers::SystemManager/docFrameListener() Any ideas what that means ?

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  • Measuring text with sizeWithFont returns height one line too short

    - by Mac
    In an iPhone app I'm working on, I'm trying to get a UILabel to dynamically adjust its size based on its content. To do so, I'm using NSString's sizeWithFont:constrainedToSize method to measure the height of the text when constrained to a given width, and then set the UILabel to that width and the returned height. The problem however, is that roughly half the time sizeWithFont is returning a height for the text that is one line too short. This happens mostly with long strings (a couple of hundred characters), but also very occasionally with shorter strings (less than one hundred). For reference, my code looks like the following (textLabel is the UILabel in question and is a member variable, TEXT_WIDTH is the desired label width): - (void) setLabelText:(NSString*) text { CGSize bounds = CGSizeMake(TEXT_WIDTH, CGFLOAT_MAX); int textHeight = [text sizeWithFont:textLabel constrainedToSize:bounds lineBreakMode:UILineBreakModeWordWrap].height; CGRect newFrame = CGRectMake(0, 0, TEXT_WIDTH, textHeight); [textLabel setFrame:newFrame]; } Just to be clear, I don't believe the issue is with the UILabel, as I've manually inspected the value being returned by sizeWithFont and can confirm that the number being returned for the height is too small on the occasions when the label is also too small.

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  • How to use NInject (or other DI / IoC container) with the model binder in ASP.NET MVC 2 ?

    - by Andrei Rinea
    Let's say I have an User entity and I would want to set it's CreationTime property in the constructor to DateTime.Now. But being a unit test adopter I don't want to access DateTime.Now directly but use an ITimeProvider : public class User { public User(ITimeProvider timeProvider) { // ... this.CreationTime = timeProvider.Now; } // ..... } public interface ITimeProvider { public DateTime Now { get; } } public class TimeProvider : ITimeProvider { public DateTime Now { get { return DateTime.Now; } } } I am using NInject 2 in my ASP.NET MVC 2.0 application. I have a UserController and two Create methods (one for GET and one for POST). The one for GET is straight forward but the one for POST is not so straight and not so forward :P because I need to mess with the model binder to tell it to get a reference of an implementation of ITimeProvider in order to be able to construct an user instance. public class UserController : Controller { [HttpGet] public ViewResult Create() { return View(); } [HttpPost] public ActionResult Create(User user) { // ... } } I would also like to be able to keep all the features of the default model binder. Any chance to solve this simple/elegant/etc? :D

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  • How can I Fail a WebTest?

    - by craigb
    I'm using Microsoft WebTest and want to be able to do something similar to NUnit's Assert.Fail(). The best i have come up with is to throw new webTestException() but this shows in the test results as an Error rather than a Failure. Other than reflecting on the WebTest to set a private member variable to indicate the failure, is there something I've missed? EDIT: I have also used the Assert.Fail() method, but this still shows up as an error rather than a failure when used from within WebTest, and the Outcome property is read-only (has no public setter). EDIT: well now I'm really stumped. I used reflection to set the Outcome property to Failed but the test still passes! Here's the code that sets the Oucome to failed: public static class WebTestExtensions { public static void Fail(this WebTest test) { var method = test.GetType().GetMethod("set_Outcome", BindingFlags.NonPublic | BindingFlags.Instance); method.Invoke(test, new object[] {Outcome.Fail}); } } and here's the code that I'm trying to fail: public override IEnumerator<WebTestRequest> GetRequestEnumerator() { this.Fail(); yield return new WebTestRequest("http://google.com"); } Outcome is getting set to Oucome.Fail but apparently the WebTest framework doesn't really use this to determine test pass/fail results.

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  • Problem with Json Date format when calling cross-domain proxy

    - by Christo Fur
    I am using a proxy service to allow my client side javascript to talk to a service on another domain The proxy is a simple ashx file with simply gets the request and forwards it onto the service on the other domain : using (var sr = new System.IO.StreamReader(context.Request.InputStream)) { requestData = sr.ReadToEnd(); } string data = HttpUtility.UrlDecode(requestData); using (var client = new WebClient()) { client.BaseAddress = serviceUrl; client.Headers.Add("Content-Type", "application/json"); response = client.UploadString(new Uri(webserviceUrl), data); } The client javascript calling this proxy looks like this function TestMethod() { $.ajax({ type: "POST", url: "/custommodules/configuratorproxyservice.ashx?m=TestMethod", contentType: "application/json; charset=utf-8", data: JSON.parse('{"testObj":{"Name":"jo","Ref":"jones","LastModified":"\/Date(-62135596800000+0000)\/"}}'), dataType: "json", success: AjaxSucceeded, error: AjaxFailed }); function AjaxSucceeded(result) { alert(result); } function AjaxFailed(result) { alert(result.status + ' - ' + result.statusText); } } This works fine until I have to pass a date. At which point I get a Bad Request error when the proxy tries to call the service I did have this working at one point but have now lost it. Have tried using JSON.Parse on the object before sending. and JSON.Stringify, but no joy anyone got any ideas what I am missing

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  • Force-directed graphing

    - by David
    Hello, I'm trying to write a force-directed or force-atlas code base for a graphing application I'm building for myself. Here is an example of what I'm attempting: http://sawamuland.com/flash/graph.html I managed to find some pseudo code to accomplish what I'd like on the Wiki Force-atlas article. I've converted this into ActionScript 3.0 code since it's a Flash application. Here is my source: var timestep:int = 0; var damping:int = 0; var total_kinetic_engery:int = 0; for (var node in list) { var net_force:int = 0; for (var other_node in list) { net_force += coulombRepulsion(node, other_node, nodeList); } for (var spring in list[node].relations) { net_force += hookeAttraction(node, spring, nodeList); } list[node].velocity += (timestep * net_force) * damping; list[node].position += timestep * list[node].velocity; total_kinetic_engery += list[node].mass * (list[node].velocity) ^ 2; } The problem now is finding pseudo code or a function to perform the the coulomb repulsion and hooke attraction code. I'm not exactly sure how to accomplish this. Does anyone know of a good reference I can look at...understand and implement quickly? Best.

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  • How to reproduce System.Security.Cryptography.SHA1Managed result in Python

    - by joetyson
    Here's the deal: I'm moving a .NET website to Python. I have a database with passwords hashed using the System.Security.Cryptography.SHA1Managed utility. I'm creating the hash in .NET with the following code: string hashedPassword = Cryptographer.CreateHash("MYHasher", userInfo.Password); The MYHasher block looks like this: <add algorithmType="System.Security.Cryptography.SHA1Managed, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=blahblahblah" saltEnabled="true" type="Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.HashAlgorithmProvider, Microsoft.Practices.EnterpriseLibrary.Security.Cryptography, Version=3.0.0.0, Culture=neutral, PublicKeyToken=daahblahdahdah" name="MYHasher" /> So for a given password, I get back and store in the database a 48 byte salted sha1. I assume the last 8 bytes are the salt. I have tried to reproduce the hashing process in python by doing a sha1(salt + password) and sha1(password + salt) but I'm having no luck. My question to you: How are the public keys being used? How is the password rehashed using the salt. How is the salt created? (e.g., When I say saltEnabled="true", what extra magic happens?) I need specific details that don't just reference other .NET libraries, I'm looking for the actual operational logic that happens in the blackbox. Thanks!

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  • flushing database cache in SWI-Prolog

    - by JPro
    We are using swi-prolog to run our testcases. Whenever the test starts, I am opening the connection to MYSQL database and storing the Name of the Test hat is being done and then closing the DB. These tests run for about 2 days continuously. After the tests are done, the results basically gets stored in folder in the server. There is a predicate in another prolog file that is called to update the results to the MYSQL database. The code is simple, I use odbc library and just call odbc_* predicates to connect and update the mysql by issuing direct queries. The actual problem is : If I try to call the Predicate from the same Prolog window, where the test just got completed, I get an error as updating to the DB server. Although I do not get any error in the connection. If I close the session of that prolog with halt and closing all the open prolog windows , then open an other complete new instance of Prolog and run the predicate the update goes well. I have a feeling that there is some connection reference to the MySQL DB in Prolog database. Is there any way to clear the database in prolog so that I can run the same predicate without closing any existing prolog windows? Any ideas appreciated. Thanks.

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  • When to use custom exceptions vs. existing exceptions vs. generic exceptions

    - by Ryan Elkins
    I'm trying to figure out what the correct form of exceptions to throw would be for a library I am writing. One example of what I need to handle is logging a user in to a station. They do this by scanning a badge. Possible things that could go wrong include: Their badge is deactivated They don't have permission to work at this station The badge scanned does not exist in the system They are already logged in to another station elsewhere The database is down Internal DB error (happens sometimes if the badge didn't get set up correctly) An application using this library will have to handle these exceptions one way or another. It's possible they may decide to just say "Error" or they may want to give the user more useful information. What's the best practice in this situation? Create a custom exception for each possibility? Use existing exceptions? Use Exception and pass in the reason (throw new Exception("Badge is deactivated.");)? I'm thinking it's some sort of mix of the first two, using existing exceptions where applicable, and creating new ones where needed (and grouping exceptions where it makes sense).

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  • Passing in defaults within window.onload?

    - by Matrym
    I now understand that the following code will not work because I'm assigning window.onload to the result of the function, not the function itself. But if I remove the parens, I suspect that I have to explicitly call a separate function to process the config before the onload. So, where I now have: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <HEAD> <script type="text/javascript" src="lb-core.js"></script> <script type="application/javascript"> var lbp = { defaults: { color: "blue" }, init: function(config) { if(config) { for(prop in config){ setBgcolor.defaults[prop] = config[prop]; } } var bod = document.body; bod.style.backgroundColor = setBgcolor.defaults.color; } } var config = { color: "green" } window.onload = lbp.init(config); </script> </HEAD> <body> <div id="container">test</div> </body> </HTML> I imagine I would have to change it to: var lbp = { defaults: { color: "blue" }, configs: function(config){ for(prop in config){ setBgcolor.defaults[prop] = config[prop]; } }, init: function() { var bod = document.body; bod.style.backgroundColor = setBgcolor.defaults.color; } } var config = { color: "green" } lbp.configs(config); window.onload = lbp.init; Then, for people to use this script and pass in a configuration, they would need to call both of those bottom lines separately (configs and init). Is there a better way of doing this? Note: If your answer is to bundle a function of window.onload, please also confirm that it is not hazardous to assign window.onload within scripts. It's my understanding that another script coming after my own could, in fact, overwrite what I'd assigned to onload.

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  • BASH statements execute alone but return "no such file" in for loop.

    - by reve_etrange
    Another one I can't find an answer for, and it feels like I've gone mad. I have a BASH script using a for loop to run a complex command (many protein sequence alignments) on a lot of files (~5000). The loop produces statements that will execute when given alone (i.e. copy-pasted from the error message to the command prompt), but which return "no such file or directory" inside the loop. Script below; there are actually several more arguments but this includes some representative ones and the file arguments. #!/bin/bash # Pass directory with targets as FASTA sequences as argument. # Arguments to psiblast # Common db=local/db/nr/nr outfile="/mnt/scratch/psi-blast" e=0.001 threads=8 itnum=5 pssm="/mnt/scratch/psi-blast/pssm." pssm_txt="/mnt/scratch/psi-blast/pssm." pseudo=0 pwa_inclusion=0.002 for i in ${1}/* do filename=$(basename $i) "local/ncbi-blast-2.2.23+/bin/psiblast\ -query ${i}\ -db $db\ -out ${outfile}/${filename}.out\ -evalue $e\ -num_threads $threads\ -num_iterations $itnum\ -out_pssm ${pssm}$filename\ -out_ascii_pssm ${pssm_txt}${filename}.txt\ -pseudocount $pseudo\ -inclusion_ethresh $pwa_inclusion" done Running this scripts gives "<scriptname> line <last line before 'done'>: <attempted command> : No such file or directory. If I then paste the attempted command onto the prompt it will run. Each of these commands takes a couple of minutes to run.

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  • Problem using delegates, static, and dependencyproperties

    - by red-X
    I'm trying to animate a private variable named radius, which works. However while its changing I'm trying to execute a function which is getting to be quite of a problem. the code i have is below, it wont run because it has the following error An object reference is required for the non-static field, method, or property 'AppPart.SetChildrenPosition()' specifically new SetChildrenPositionDelegate(SetChildrenPosition) this part in this sentance part.Dispatcher.BeginInvoke(new SetChildrenPositionDelegate(SetChildrenPosition), new Object()); thnx to anyone able to help me. class AppPart : Shape { public string name { get; set; } public List<AppPart> parts { get; set; } private double radius { get { return (double)GetValue(radiusProperty); } set { SetValue(radiusProperty, value); } } public static readonly DependencyProperty radiusProperty = DependencyProperty.Register( "radius", typeof(double), typeof(AppPart), new PropertyMetadata( new PropertyChangedCallback(radiusChangedCallback))); private delegate void SetChildrenPositionDelegate(); private void SetChildrenPosition() { //do something with radius } private static void radiusChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e) { AppPart part = d as AppPart; part.Dispatcher.BeginInvoke(new SetChildrenPositionDelegate(SetChildrenPosition), new Object()); } private void AnimateRadius(double start, double end) { DoubleAnimation ani = new DoubleAnimation(); ani.From = start; ani.To = end; ani.FillBehavior = FillBehavior.HoldEnd; ani.Duration = new Duration(new TimeSpan(0, 0, 0, 3, 0)); ani.Completed += delegate { Console.WriteLine("ani ended"); }; this.BeginAnimation(AppPart.radiusProperty, ani); } }

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  • Sphinx PHP search

    - by James
    I'm doing a Sphinx search but turning up some really weird results. Any help is appreciated. So for example if I type "50", I get: 50 Cent 50 Lions 50 Foot Wave, etc. This is great, but when I search "50 Ce", I get: Ryczace Dwudziestki Spisek Bernhard Gal Cowabunga Go-Go And other crazy results. Also when I search for "50 Cent", the correct result is at the top, but then random results below. Any ideas why? PHP code: $query = $_GET['query']; if (!empty($query)) { $sphinx->SetMatchMode(SPH_MATCH_ALL); $sphinx->AddQuery($query, 'artists'); $sphinx->AddQuery($query, 'variations'); $sphinx->SetFilter('name', array(3)); $sphinx->SetLimits(0, 10); $result = $sphinx->RunQueries(); echo '<pre>'; switch ($result) { case false: echo 'Query failed: ' . $sphinx->GetLastError() . "\n"; break; default: if ($sphinx->GetLastWarning()) { echo 'WARNING: ' . $sphinx->GetLastWarning() . "\n"; } if (is_array($result[0]['matches']) && count($result[0]['matches'])) { foreach ($result[0]['matches'] as $value => $info) { $artist = artistDetails($value); echo $artist['name'] . "\n"; } } } } Sphinx Index and Source: source artists { type = mysql sql_host = localhost sql_user = user sql_pass = pass sql_db = db sql_port = 3300 sql_query = \ SELECT \ id, name \ FROM artists; #UNIX_TIMESTAMP(time) #sql_attr_uint = group_id #sql_attr_timestamp = time sql_query_info = SELECT id,name FROM artists WHERE id=$id } index artists { source = artists path = /var/sphinx/artists docinfo = extern charset_type = utf-8 }

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  • Help needed implementing a web based file management system with a file hierarchy system, help neede

    - by molleman
    Hello i am trying to create a web application that will allow users to upload files online, i am using gwt while using hibernate for database communication, i am able to upload file to a server , and store them on the server. but what i want is to associate the files with a user. i want the user to be able to create folders and store a file in sub folders. my logic was to use the composite pattern to store folders and fileLocations with a user but i am am finding it difficult to implement this so i can show the files and folders within a gwt tree. what would be the best way to implement a hierarchy of folders and information of the location of a file so it could be displayed in a gwt tree? what i did have was a User would hold a reference to a root folder and then each sub folder could hold folders or fileLocations. i used the composite pattern to implement the file hierarchy, but when i want to display a the contents of a folder i need a for loop for each list. so i could a folder within a folder within a folder that would need 3 for loops to show the contents of my folders. What is the best way to implement this file management system. so what do you guys think?

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