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  • Custom Types in WCF Rest

    - by user316341
    I am using the Rest Singleton WCF Service temple from the Rest Starter Kit. The temples uses sample item as its sample Item. i am attempting to replace that sample ITem with a custom type from web reference in my ASP.Net project .dll. The types and name spaces are found and i can replace the sample item in the code. when i run the application i get this error: "Exception has been thrown by the target of an invocation." when this line is executed "return new SingletonServiceHost(serviceType, baseAddresses);" <%@ ServiceHost Language="C#" Debug="true" Service="SAUDServices.Service" Factory="SAUDServices.AppServiceHostFactory"%> using System; using System.ServiceModel; using System.ServiceModel.Activation; using Microsoft.ServiceModel.Web.SpecializedServices; using Stretchatyourdesk; namespace SAUDServices { class AppServiceHostFactory : ServiceHostFactory { protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses) { return new SingletonServiceHost(serviceType, baseAddresses); } } }

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  • Using LINQ to search a byte array for all subarrays that start/stop with certain byte

    - by Joel B
    I'm dealing with a COM port application and we have a defined variable-length packet structure that I'm talking to a micro-controller with. The packet has delimiters for the start and stop bytes. The trouble is that sometimes the read buffer can contain extraneous characters. It seems like I'll always get the whole packet, just some extra chatter before/after the actual data. So I have a buffer that I append data to whenever new data is received from the COM port. What is the best way to search this buffer for any possible occurrences of my packet? For example: Say my packet delimiter is 0xFF and I have an array as such { 0x00, 0xFF, 0x02, 0xDA, 0xFF, 0x55, 0xFF, 0x04 } How can I create a function/LINQ-statment that returns all subarrays that start and end with the delimiter (almost like a sliding-correlator with wildcards)? The sample would return the following 3 arrays: {0xFF, 0x02, 0xDA, 0xFF}, {0xFF, 0x55, 0xFF}, and {0xFF, 0x02, 0xDA, 0xFF, 0x55, 0xFF}

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  • Thread Local Storage and local method variables

    - by miguel
    In c#, each thread has its own stack space. If this is the case, why is the following code not thread-safe? (It is stated that this code is thread-safe on this post: Locking in C# class Foo { private int count = 0; public void TrySomething() { count++; } } As count is an int (stack variable), surely this value would be isolated to an individual thread, on its own stack, and therefore thread-safe? I am probably missing something here, but I dont understand what is actually in Thread Local Storage if not stack-based variables for the thread?

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  • Throwing Exception in CTOR and Smart Pointers

    - by David Relihan
    Is it OK to have the following code in my constructor to load an XML document into a member variable - throwing to caller if there are any problems: MSXML2::IXMLDOMDocumentPtr m_docPtr; //member Configuration() { try { HRESULT hr = m_docPtr.CreateInstance(__uuidof(MSXML2::DOMDocument40)); if ( SUCCEEDED(hr)) { m_docPtr->loadXML(CreateXML()); } else { //throw exception to caller } } catch(...) { //throw exception to caller } } Based on Scott Myers RAII implementations in More Effective C++ I believe I am alright in just allowing exceptions to be thrown from CTOR as I am using a smart pointer(IXMLDOMDocumentPtr). Let me know what you think....

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  • [jquery/javascript] Trigger function when mouse click inside textarea AND type stop typing...

    - by marc
    Welcome, In short, my website use BBcode system, and i want allow users to preview message without posting it. I'm using JQuery library. I need 3 actions. 1) When user click in textarea i want display DIV what will contain preview, i want animate opening. 2) When user typing, i want dynamical load parsed by PHP code to DIV. (i'm still thinking what will be best option... refresh every 2 seconds, or maybe we can detect and refresh after 1 second of inactivity [stop typing]) 3) When user click outside textarea i want close preview div with animation. For example the PHP parser will have patch /api/parser.php and variable by POST called $_POST['message']. Any idea my digital friends ?

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  • Occasional InterruptedException when quitting a Swing application

    - by Joonas Pulakka
    I recently updated my computer to a more powerful one, with a quad-core hyperthreading processor (i7), thus plenty of real concurrency available. Now I'm occasionally getting the following error when quitting (System.exit(0)) an application (with a Swing GUI) that I'm developing: Exception while removing reference: java.lang.InterruptedException java.lang.InterruptedException at java.lang.Object.wait(Native Method) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118) at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134) at sun.java2d.Disposer.run(Disposer.java:125) at java.lang.Thread.run(Thread.java:619) Well, given that it started to happen with a more concurrency-capable hardware, and it has to do with threads, and it happens occasionally, it's obviously some kind of timing thing. But the problem is that the stack trace is so short. All I have is the listing above. It doesn't include my own code at all, so it's somewhat hard to guess where the bug is. Has anyone experienced something like this before? Any ideas how to start solving it?

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  • Serializing C# objects to DB

    - by Robert Koritnik
    I'm using a DB table with various different entities. This means that I can't have an arbitrary number of fields in it to save all kinds of different entities. I want instead save just the most important fields (dates, reference IDs - kind of foreign key to various other tables, most important text fields etc.) and an additional text field where I'd like to store more complete object data. the most obvious solution would be to use XML strings and store those. The second most obvious choice would be JSON, that usually shorter and probably also faster to serialize/deserialize... And is probably also faster. But is it really? My objects also wouldn't need to be strictly serializable, because JsonSerializer is usually able to serialize anything. Even anonymous objects, that may as well be used here. What would be the most optimal solution to solve this problem?

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  • Procedural music generation?

    - by anon
    Anyone have good book / article recommendation for procedural generation of background music? (No vocals, just instruments). I'm not interested in: How do I generate the sound of a particular note on a particular instrument I'm interested in: How do I generate the melody / score for the music. Thanks! EDIT: Thanks for the reference to Brian Eno. I'm definitely looking into the ambient/user can ignore type of music. I.e. think the background music of a game. It's there to provide some basic mood, but the focus is the game.

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  • jQuery - Add click event to Div and go to first link found

    - by LuckyShot
    Hi guys, I think I've been too much time looking at this function and just got stuck trying to figure out the nice clean way to do it. It's a jQuery function that adds a click event to any div with a click CSS class found in the page and when clicked it redirects the user to the first link found in the div. function clickabledivs() { $('.click').each( function (intIndex) { $(this).bind("click", function(){ window.location = $( "#"+$(this).attr('id')+" a:first-child" ).attr('href'); }); } ); } The code simply works although I'm pretty sure there is a fairly better way to accomplish it, specially the selector I am using: $( "#"+$(this).attr('id')+" a:first-child" ) looks too long and slow. Any ideas? Please let me know if you need more details. Thanks! PS: I've got some jQuery benchmarking reference from Project2k.de here: http://blog.projekt2k.de/2010/01/benchmarking-jquery-1-4/

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  • URL Navigation and SQL Insertion After RadioButtonList Selection

    - by SidC
    Good Morning, I have a radiobuttonlist in my ASP.NET webforms application that is used as a voting tool. The concept is as follows: Users will vote for the blurb in the contentplaceholder using the radiobuttonlist. My list item values are 1 through 3 and my list item text is something like low, medium and high. Questions: 1. I want to save and accumulate votes for a given blurb. The blurb ID is referenced in a meta tag on the content page. How do I reference the meta tag in my SQL insert statement? 2. When the radiobuttonlist is used, can it cause the next content page to be loaded after the SQL insert is done? That is, I don't necessarily want the user to make the radiobuttonlist selection, then have to click a separate button to cast vote and move to next page. I want all that done in the radiobuttonlist. Is this possible? Thanks, Sid

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  • Retweet button in asp.net site

    - by Zerotoinfinite
    Hi All, I am using asp.net 3.5 and C# for my personal blog site. I want to include retweet\tweet button on every post I have made, for this I have some query. I have made the account on twitter with my website name. As I want to check the individual tweets for each of my post, do I have to create new account for each post or do I have to include new list for each post. As my post has the url something like this www.mywebsite.net/myblog.aspx?id=9 , with this id I am recognising the post. Then how would I write the reference URL to the retweet button for each & every post. Thanks in advance. Please let me know if the information provided by me requires more details.

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  • c# copy constructor generator

    - by Shawn Mclean
    I want to copy values from one object to another object. Something similiar to pass by value but with assignment. Eg. PushPin newValPushPin = oldPushPin; //I want to break the reference here. I was told to write a copy constructor for this. But this class has alot of properties, it will probably take an hour to write a copy constructor by hand. Is there a better way to assign an object to another object by value? If not, is there a copy constructor generator?

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  • Autofac / MVC4 / WebApi (RC) Dependency Injection issue after upgrading from beta

    - by George D.
    var resolver = new AutofacWebApiDependencyResolver(container); configuration.ServiceResolver.SetResolver(resolver); after updating to ASP.NET MVC4 (RC) I get the following error: 'System.Web.Http.HttpConfiguration' does not contain a definition for 'ServiceResolver' and no extension method 'ServiceResolver' accepting a first argument of type 'System.Web.Http.HttpConfiguration' could be found (are you missing a using directive or an assembly reference?) I realize after reading this (http://www.asp.net/web-api/overview/extensibility/using-the-web-api-dependency-resolver) that these interfaces have changed, but I am not sure how to apply this change to how I use Autofac. Do i need to wait for a new release from Autofac or is there another way I can get past this.

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  • Returning an anonymous class that uses a final primitive. How does it work?

    - by Tim P
    Hi, I was wondering if someone could explain how the following code works: public interface Result { public int getCount(); public List<Thing> getThings(); } class SomeClass { ... public Result getThingResult() { final List<Thing> things = .. populated from something. final int count = 5; return new Result { @Override public int getCount() { return count; } @Override public List<Thing> getThings(); return things; } } } ... } Where do the primitive int , List reference and List instance get stored in memory? It can't be on the stack.. so where? Is there a difference between how references and primitives are handled in this situation? Thanks a bunch, Tim P.

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  • Java: confirm method Binary division and find remainder is correct?

    - by cadwag
    I am parsing binary files and have to implement a CRC algorithm to ensure the file is not corrupted. Problem is that I can't seem to get the binary math working when using larger numbers. The example I'm trying to get working: BigInteger G = new BigInteger("11001", 2); BigInteger M = new BigInteger("1110010000", 2); BigInteger R = M.remainder(G); I am expecting: R = "0101" But I am getting: R = "1100" I am assuming the remainder of 0101 is correct since it is given to me in this book I am using as a reference for the CRC algorithm (it's not based in Java), but I can't seem to get it working. I can get small binary calculations to work that I have solved by hand, but not the larger ones. I'll admit that I haven't worked the larger ones by hand yet, that is my next step, but I wanted to see if someone could point out a glaring flaw I have in my code. Can anyone confirm or deny that my methodology is correct? Thanks

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  • NSNotification center may not respond to -object ?

    - by blackkettle
    Hi, I'm trying to make simple use of the NSNotification center inside my iPhone application, but I seem to be doing something wrong in this case. I was under the impression that it was possible to retrieve an object associated with a particular message, or at least a reference to the object, but using the following example code I'm getting a warning, "NSNotification center may not respond to -object" - (void)addNewBookmark:(NSNotificationCenter *)notification { Bookmark *newBookMark = (Bookmark *)[notification object]; //Do some stuff with the bookmark object } Indeed, when I compile and run the code, basically nothing I try to do with the contents of the object actually gets carried out - it's simply ignored. The post code is as follows, - (IBAction)save:(id) sender{ //Sending the message with the related object [[NSNotificationCenter defaultCenter] postNotificationName:@"addNewBookmark" object:bookmark]; } and the bookmark object itself is just a dictionary. I also tried using the "userInfo" argument and passing the bookmark object through that, but the result was the same. How should I be doing this? What am I doing wrong?

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  • Creating a Rails query from a hash of user input

    - by Jamie
    I'm attempting to create a fairly complex search engine for a project using a variable number of search criteria. The user input is sorted into an array of hashes. The hashes contain the following information: { :column => "", :value => "", :operator => "", # Such as: =, !=, <, >, etc. :and_or => "", # Two possible values: "and" and "or" } How can I loop through this array and use the information in these hashes to make an ActiveRecord WHERE query?

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  • XQuery - problem with recursive function

    - by H4mm3rHead
    Hi all, Im new on this project and am going to write, what i thought was a simple thing. A recursive function that writes nested xml elements in x levels (denoted by a variable). So far I have come up with this, but keeps getting a compile error. Please note that i have to generate new xml , not query existing xml: xquery version "1.0"; declare function local:PrintTest($amount) { <test> { let $counter := 0 if ($counter <= $amount ) then local:PrintTest($counter) else return $counter := $counter +1 } </test> }; local:PrintPerson(3) My error is: File Untitled1.xquery: XQuery transformation failed XQuery Execution Error! Unexpected token - " ($counter <= $amount ) t" I never understood xquery, and cant quite see why this is not working (is it just me or are there amazingly few resources on the Internet concerning XQuery?)

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  • Ruby on Rails: What are partial hash arguments and full set arguments?

    - by williamjones
    I'm using asserts_redirected_to in my unit tests, and I'm receiving this warning: DEPRECATION WARNING: Using assert_redirected_to with partial hash arguments is deprecated. Specify the full set arguments instead. What is a partial hash argument, and what is a full set argument? These aren't terms that I've seen used in the Rails community before, and the only relevant results I can find on Google for these are in reference to this deprecation warning. Here is my code: assert_redirected_to :controller => :user, :action => :search also tried: assert_redirected_to({:controller => :user, :action => :search}) I might have guessed that it feels I'm missing some parameters or something like that, but the API documentation explicitly says that not all parameters need to be included: http://rails.rubyonrails.org/classes/ActionController/Assertions/ResponseAssertions.html

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  • dynamically created datagridview columns not accessible unless added to a form...why?

    - by deostroll
    We simply created a DataGridView control dynamically and bound it to a DataTable. We were tying to style certain columns. But, when we tried to access the columns we got a null reference. On further investigation we found that if we add the DataGridView control to the main form, and then try to access its columns, it works fine!!! Code which throws error: DataGridView gv = new DataGridView(); gv.DataSource = GetDataTable(); //binding it to datatable Debug.Assert(gv.Columns == null); Code which works fine: DataGridView gv = new DataGridView(); gv.DataSource = GetDataTable(); //binding it to datatable this.Controls.Add(gv); //adding to form Debug.Assert(gv.Columns == null); //the assertion fails! Why is this behaviour so? Is there a workaround for this?

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  • What is best way to remove ProgressDialog

    - by Sunil Kumar Sahoo
    I have created a progress dialog by ProgressDialog progressDialog = null; // create instance variable of ProgressDialog int dialogID = 1; //to create progress dialog protected Dialog onCreateDialog(int id) { progressDialog = new ProgressDialog(context); progressDialog.setMessage(message); progressDialog.setIcon(android.R.id.icon); return progressDialog; } // to show progressdialog showDialog(dialogID); To remove the dialog I am able to use any of the following three approaches approach-1 if(progressDialog != null){ progressDialog.dismiss(); } approach-2 if(progressDialog != null){ progressDialog.cancel(); } approach-3 removeDialog(dialogID); I found second approach is more effective than first approach. and if I have to use with more than one progressdialog it is easier to use approach-3. But what is the best way to destroy a progressdialog and How?

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  • Correlation between JEE / J2EE to J2SE / JDK versions

    - by Ehrann Mehdan
    I was certain that I'll find a duplicate question or a satisfiyng answer, but I haven't. What I'm looking for is the answer to these questions: Is there an official correlation between JEE / J2EE and J2SE / JDK versions? If the answer is yes, where is it written? If the answer is no, then why? and is there an unofficial version table (e.g. JDK 1.4 goes well with J2EE 1.3, JDK 1.5 goes well with J2EE 1.4, JDK 1.6 with JEE 5 and so on) I can think of a couple of reasons for the uncoupling, but can't seem to find a good reference source Related questions: http://stackoverflow.com/questions/196265/jse-vs-j2ee-college-and-career/196439#196439 http://stackoverflow.com/questions/106820/what-is-j2ee-jee

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  • Update webreference gives troubles with different versions of dll

    - by Natrium
    In my application, I use some dll, let's say library.dll, version 1.0 In my webservice, I also use library.dll, but version 2.0 When I do an update of the webreference, the classes inside of the dll are also generated in the webreference. And this gives troubles because in my application, the classes that are defined in the dll now are also available in the reference and there is a mismatch. How can I solve this? I need to be able to tell the webservice to ignore the dll-code when updating the webreference in the one or the other way. I use Visual Studio 2008.

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  • set date error on uidatepicker

    - by Matt Facer
    Hi guys, I've been stumped by the code below. I pass a string date to a UIDatePicker which seems to work on most devices, yet on some, it crashes the app. here's the code NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setDateFormat:@"HH:mm"]; NSDate *date = [dateFormat dateFromString:dateStr]; [timePicker setDate:date]; [dateFormat release]; I have a function which passes the "dateStr" variable, as follows, dateStr = @"0:0"; I cannot see what's wrong - as it works for me! (iphone 3.1.3) but it doesnt work for my tester (ipod touch 3.1.3) Can anyone see anything wrong with the code? Thanks v much. any ideas?

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  • Floor function returning EXC_BAD_ACCESS

    - by fastrack20
    The cod that I am using contains these snippets of code. I am calling ThetaG_JD with the argument 2455343.50000 which is just a sample Julian date. Every time I run the program, I receive a EXC_BAD_ACCESS on the indicated line. When using gdb and printing out the intermediary values and passing them through the floor function, I get no error, but when Frac() is used it always returns an error. double Frac(double arg) { /* Returns fractional part of double argument */ return arg - floor(arg); } double ThetaG_JD(double jd) { /* Reference: The 1992 Astronomical Almanac, page B6. */ double UT=0, TU=0, GMST=0; //THIS LINE UT=Frac(jd+0.5); // THAT ONE ^^ jd=jd-UT; TU=(jd-2451545.0)/36525; GMST=24110.54841+TU*(8640184.812866+TU*(0.093104-TU*6.2E-6)); GMST=Modulus(GMST+secday*omega_E*UT,secday); return (twopi*GMST/secday); }

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