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  • Generics: How to derive from one of two classes?

    - by Yaron Naveh
    I have the following c# classes: class A : Object { foo() {} } class B : Object { foo() {} } I want to write a generic method that applies to both: void bar<T>(T t) { t.foo(); } this does not compile complaining the foo() is not a member of T. I can add a constraint for T to derive from one of the classes: void bar<T>(T t) where T : A but how can I have it for both?

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  • iphone barcode generator

    - by hardik
    hello all i want to develop one bar code generator application in my native iphone i currently don't know what is bar code and how to generate it please guide me how do i proceed towards it

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  • It's possible make an OCR in Python to check words...

    - by Shady
    in opened applications? I want to automate firefox in some web page and I don't have a way to "know" if the page already load completely or if it still loading... I was thinking about making an OCR to check the status bar... it's difficult ? For example, when the word DONE appears at the status bar, the program continues to the next command...

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  • What is the object of the Contact application search option ?

    - by Spredzy
    Hi all, I am wondering what is the kind of object that shows up when in the Contact application, you hit search option, what is it ? a Custom Quick Search Bar, a custom notificaction bar, other idea ... An image of what I am talking about is available here : http://www.developpez.net/forums/attachments/p60921d1270798944/java/general-java/java-mobiles/android/cet-objet-image-jointe/screen-shot-2010-04-09-at-9.37.38-am.png/ Thank you all

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  • How can I make the text of a UIBarButtonItem wrap to two lines?

    - by bio18
    Some of the titles of view controllers in my UINavigationController are quite long, which makes the back button in the navigation bar of the next view controller in the hierarchy miss out some of the text, with a "..." instead. How could I make the text of the back button wrap onto two lines, as with "Now Playing" in the navigation bar of iPod.app? Thanks!

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  • Method interception in PHP 5.*

    - by Rolf
    Hi everybody, I'm implementing a Log system for PHP, and I'm a bit stuck. All the configuration is defined in an XML file, that declares every method to be logged. XML is well parsed and converted into a multidimensionnal array (classname = array of methods). So far, so good. Let's take a simple example: #A.php class A { public function foo($bar) { echo ' // Hello there !'; } public function bar($foo) { echo " $ù$ùmezf$z !"; } } #B.php class B { public function far($boo) { echo $boo; } } Now, let's say I've this configuration file: <interceptor> <methods class="__CLASS_DIR__A.php"> <method name="foo"> <log-level>INFO</log-level> <log-message>Transaction init</log-message> </method> </methods> <methods class="__CLASS_DIR__B.php"> <method name="far"> <log-level>DEBUG</log-level> <log-message>Useless</log-message> </method> </methods> </interceptor> The thing I'd like AT RUNTIME ONLY (once the XML parser has done his job) is: #Logger.php (its definitely NOT a final version) -- generated by the XML parser class Logger { public function __call($name,$args) { $log_level = args[0]; $args = array_slice($args,1); switch($method_name) { case 'foo': case 'far': //case ..... //write in log files break; } //THEN, RELAY THE CALL TO THE INITIAL METHOD } } #"dynamic" A.php class A extends Logger { public function foo($log_level, $bar) { echo ' // Hello there !'; } public function bar($foo) { echo " $ù$ùmezf$z !"; } } #"dynamic" B.php class B extends Logger { public function far($log_level, $boo) { echo $boo; } } The big challenge here is to transform A and B into their "dynamic" versions, once the XML parser has completed its job. The ideal would be to achieve that without modifying the code of A and B at all (I mean, in the files) - or at least find a way to come back to their original versions once the program is finished. To be clear, I wanna find the most proper way to intercept method calls in PHP. What are your ideas about it ??? Thanks in advance, Rolf

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  • How to split a git repository while preserving subdirectories?

    - by Thomas
    What I want is similar to this question. However, I want the directory that is split into a separate repo to remain a subdirectory in that repo: I have this: foo/ .git/ bar/ baz/ qux/ And I want: foo/ .git/ bar/ baz/ quux/ .git/ qux/ # Note: still a subdirectory How to do this in git? I could use the method from this answer if there is some way to move all the new repo's contents into a subdirectory, throughout history.

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  • How to wrap category labels in JfreeChart

    - by SKR
    I have Stacked Bar Chart created using JFreeChart. The labels of the category are quite big and they overlap with the label of the next Bar. I would like to wrap it to the next line. I did some searching and found that i have to use the below code. setMaximumCategoryLabelLines(2) in the CategoryAxis and still it doesn't wrap to the next line. Please suggest solutions.

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  • How to dispose of a NET COM interop object on Release()

    - by mhenry1384
    I have a COM object written in managed code (C++/CLI). I am using that object in standard C++. How do I force my COM object's destructor to be called immediately when the COM object is released? If that's not possible, call I have Release() call a MyDispose() method on my COM object? My code to declare the object (C++/CLI): [Guid("57ED5388-blahblah")] [InterfaceType(ComInterfaceType::InterfaceIsIDispatch)] [ComVisible(true)] public interface class IFoo { void Doit(); }; [Guid("417E5293-blahblah")] [ClassInterface(ClassInterfaceType::None)] [ComVisible(true)] public ref class Foo : IFoo { public: void MyDispose(); ~Foo() {MyDispose();} // This is never called !Foo() {MyDispose();} // This is called by the garbage collector. virtual ULONG Release() {MyDispose();} // This is never called virtual void Doit(); }; My code to use the object (native C++): #import "..\\Debug\\Foo.tlb" ... Bar::IFoo setup(__uuidof(Bar::Foo)); // This object comes from the .tlb. setup.Doit(); setup-Release(); // explicit release, not really necessary since Bar::IFoo's destructor will call Release(). If I put a destructor method on my COM object, it is never called. If I put a finalizer method, it is called when the garbage collector gets around to it. If I explicitly call my Release() override it is never called. I would really like it so that when my native Bar::IFoo object goes out of scope it automatically calls my .NET object's dispose code. I would think I could do it by overriding the Release(), and if the object count = 0 then call MyDispose(). But apparently I'm not overriding Release() correctly because my Release() method is never called. Obviously, I can make this happen by putting my MyDispose() method in the interface and requiring the people using my object to call MyDispose() before Release(), but it would be slicker if Release() just cleaned up the object. Is it possible to force the .NET COM object's destructor, or some other method, to be called immediately when a COM object is released? Googling on this issue gets me a lot of hits telling me to call System.Runtime.InteropServices.Marshal.ReleaseComObject(), but of course, that's how you tell .NET to release a COM object. I want COM Release() to Dispose of a .NET object.

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  • i386 assembly question: why do I need to meddle with the stack pointer?

    - by zneak
    Hello everyone, I decided it would be fun to learn x86 assembly during the summer break. So I started with a very simple hello world program, borrowing on free examples gcc -S could give me. I ended up with this: HELLO: .ascii "Hello, world!\12\0" .text .globl _main _main: pushl %ebp # 1. puts the base stack address on the stack movl %esp, %ebp # 2. puts the base stack address in the stack address register subl $20, %esp # 3. ??? pushl $HELLO # 4. push HELLO's address on the stack call _puts # 5. call puts xorl %eax, %eax # 6. zero %eax, probably not necessary since we didn't do anything with it leave # 7. clean up ret # 8. return # PROFIT! It compiles and even works! And I think I understand most of it. Though, magic happens at step 3. Would I remove this line, my program would die between the call to puts and the xor from a misaligned stack error. And would I change $20 to another value, it'd crash too. So I came to the conclusion that this value is very important. Problem is, I don't know what it does and why it's needed. Can anyone explain me? (I'm on Mac OS, would it ever matter.)

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  • google maps not showing actual map and postcode

    - by Andy
    Im trying to pass a dynamically generated postode to a page. But currently its not showing the map correctly. Any ideas? Heres my head tag <script src="http://www.google.com/jsapi?key=ABQIAAAANQzcZVPOkiHWMZO3zxREGRSlIja3KBL7jZ08tky_uJrV3vVYdxTCwTHJPA2Vn06DLdnCWvRW_w7VYQ" type="text/javascript"></script> <script language="Javascript" type="text/javascript"> var localSearch; var map; var icon; var addressMarkerOptions; google.load("search", "1"); google.load("maps", "2"); google.setOnLoadCallback(initialize); function initialize() { localSearch = new GlocalSearch(); icon = new GIcon(G_DEFAULT_ICON); addressMarkerOptions = { icon:icon , draggable: false}; map = new GMap2(document.getElementById("map")); map.addControl(new GLargeMapControl()); map.addControl(new GMapTypeControl()); plotAddress("OX4 1FJ"); } /** * This takes either a postcode or an address string * */ function plotAddress(address) { localSearch.setSearchCompleteCallback(null, function() { if (localSearch.results[0]) { var resultLat = localSearch.results[0].lat; var resultLng = localSearch.results[0].lng; var point = new GLatLng(resultLat,resultLng); var marker = new GMarker(point, addressMarkerOptions); map.addOverlay(marker); map.setCenter(point, 5, G_NORMAL_MAP); } else { alert('address not found'); } }); localSearch.execute(address + ", UK"); } </script> It slots into the code below: <div id="map">Loading...</div>

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  • How do I build a JSON object to send to an AJAX WebService?

    - by Ben McCormack
    After trying to format my JSON data by hand in javascript and failing miserably, I realized there's probably a better way. Here's what the code for the web service method and relevant classes looks like in C#: [WebMethod] public Response ValidateAddress(Request request) { return new test_AddressValidation().GenerateResponse( test_AddressValidation.ResponseType.Ambiguous); } ... public class Request { public Address Address; } public class Address { public string Address1; public string Address2; public string City; public string State; public string Zip; public AddressClassification AddressClassification; } public class AddressClassification { public int Code; public string Description; } The web service works great with using SOAP/XML, but I can't seem to get a valid response using javascript and jQuery because the message I get back from the server has a problem with my hand-coded JSON. I can't use the jQuery getJSON function because the request requires HTTP POST, so I'm using the lower-level ajax function instead: $.ajax({ type: "POST", contentType: "application/json; charset=utf-8", url: "http://bmccorm-xp/HBUpsAddressValidation/AddressValidation.asmx/ValidateAddress", data: "{\"Address\":{\"Address1\":\"123 Main Street\",\"Address2\":null,\"City\":\"New York\",\"State\":\"NY\",\"Zip\":\"10000\",\"AddressClassification\":null}}", dataType: "json", success: function(response){ alert(response); } }) The ajax function is submitting everything specified in data:, which is where my problem is. How do I build a properly formatted JSON object in javascript so I can plug it in to my ajax call like so: data: theRequest I'll eventually be pulling data out of text inputs in forms, but for now hard-coded test data is fine. How do I build a properly formatted JSON object to send to the web service?

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  • SQL View Creation

    - by george9170
    I have two tables Table FOO FooUniqueID| Year| Name| Worth| --------------------------- 1 2008 Bob 23.00 2 2009 Bob 40200 Table Bar BarUniqueID | Name | Value ----------------------- 1aBc Year 2009 I would like to create a view. That will select everything from FOO where the Year is equal select value from Bar where name = year without using a sub query. thank you

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  • JAX-WS wsgen and collections of collections: wsgen broken?

    - by ayang
    I've been playing around with "bottom-up" JAX-WS and have come across something odd when running wsgen. If I have a service class that does something like: @WebService public class Foo { public ArrayList<Bar> getBarList(String baz) { ... } } then running wsgen gets me a FooService_schema1.xsd that has something like this: <xs:complexType name="getBarListResponse"> <xs:sequence> <xs:element name="return" type="tns:bar" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> which seems reasonable. However, if I want a collection of collections like: public BarCollection getBarCollection(String baz) { ... } // BarCollection is just a container for an ArrayList<Bar> then the generated schema ends up with stuff like: <xs:complexType name="barCollection"> <xs:sequence/> </xs:complexType> <xs:complexType name="getBookCollectionsResponse"> <xs:sequence> <xs:element name="return" type="tns:barCollection" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> An empty sequence is not what I had in mind at all. My original approach was to go with: public ArrayList<ArrayList<Bar>> getBarLists(String baz) { ... } but that ends up with a big chain of complexTypes that just wind up with an empty sequence at the end as well: <xs:complexType name="getBarListsResponse"> <xs:sequence> <xs:element name="return" type="tns:arrayList" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="arrayList"> <xs:complexContent> <xs:extension base="tns:abstractList"> <xs:sequence/> </xs:extension> </xs:complexContent> </xs:complexType> <xs:complexType name="abstractList" abstract="true"> <xs:complexContent> <xs:extension base="tns:abstractCollection"> <xs:sequence/> </xs:extension> </xs:complexContent> </xs:complexType> <xs:complexType name="abstractCollection" abstract="true"> <xs:sequence/> </xs:complexType> Am I missing something or is this a known hole in wsgen? JAXB? Andy

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  • ASP.NET MVC form GET passing array

    - by creativeincode
    I have a form with a collection of checkbox's for a refine search function on my website. I am trying to pass an array in a form GET but the URL looks like: /search?filter=foo&filter=bar&filter=green Is there a better way to pass this in MVC? Possible like /search?filter=foo,bar,green Thanks in advance.

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  • WPF how to see last added text line in TexBox

    - by Janus
    I would like simmulate Console text output in my WPF app but when I add new lines in TextBox I should use scroll bar to see last added text but I want to see last added text but for firsts lines use scroll bar <TextBox TextWrapping="Wrap" AcceptsReturn="True" VerticalScrollBarVisibility="Auto" Text="{Binding Path=Data, Mode=TwoWay}" />`

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  • When should I use $ (and can it always be replaced with parentheses)?

    - by J Cooper
    From what I'm reading, $ is described as "applies a function to its arguments." However, it doesn't seem to work quite like (apply ...) in Lisp, because it's a binary operator, so really the only thing it looks like it does is help to avoid parentheses sometimes, like foo $ bar quux instead of foo (bar quux). Am I understanding it right? Is the latter form considered "bad style"?

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  • SQL Join Statement

    - by mouthpiec
    Hi I have the following SQL SELECT statement SELECT bar_id, bar_name, town_name, advert_text FROM bar, towns, baradverts WHERE town_id = town_id_fk AND bar_id = bar_id_fk My problem is that since not every bar has an advert in table "baradverts", these bars are not coming up in the results. In other words I need a NULL for those bars that do not have an advert string.

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  • Unclickable Seekbar in android listview

    - by cppdev
    Hi, I have a Listview in my application. Listview rows are clickable. I have introduced a seek bar in each row of a Listview. Despite settings android:clickable="false" for Seekbar in layout xml, I am still able to click on it and move seek bar as desired. I don't want Seekbar to be clickbale but I do want Listview row to clickable. Any pointers will be appreciated.

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  • Why are virtual methods considered early bound?

    - by AspOnMyNet
    One definition of binding is that it is the act of replacing function names with memory addresses. a) Thus I assume early binding means function calls are replaced with memory addresses during compilation process, while with late binding this replacement happens during runtime? b) Why are virtual methods also considered early bound (thus the target method is found at compile time, and code is created that will call this method)? As far as I know, with virtual methods the call to actual method is resolved only during runtime and not compile time?! thanx EDIT: 1) A a=new A(); a.M(); As far as I know, it is not known at compile time where on the heap (thus at which memory address ) will instance a be created during runtime. Now, with early binding the function calls are replaced with memory addresses during compilation process. But how can compiler replace function call with memory address, if it doesn’t know where on the heap will object a be created during runtime ( here I’m assuming the address of method a.M will also be at same memory location as a )? 2) v-table calls are neither early nor late bound. Instead there's an offset into a table of function pointers. The offset is fixed at compile time, but which table the function pointer is chosen from depends on the runtime type of the object (the object contains a hidden pointer to its v-table), so the final function address is found at runtime. But assuming the object of type T is created via reflection ( thus app doesn’t even know of existence of type T ), then how can at compile time exist an entry point for that type of object?

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  • Combining the UNIQUE and CHECK constraints

    - by Bobby
    I have a table with columns a b and c, and if c is false then I only want to allow insertions if columns a and b are unique, but if c is true then a and b do not need to be unique. Example: There can only be one (foo, bar, false) in the table, but no limit on how many (foo, bar, true) there can be. I tried something like CONSTRAINT blah UNIQUE (a,b) AND CHECK (C is TRUE) but I can't figure out the correct syntax.

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  • Problem in implementing progress control using threading!

    - by Rakesh
    hello all, I am new to the concept of threading in C..so I find it difficult to implement that in my function...I have a simple application in which i want to display a progress bar at a particular place..In a particular funtion I will read files(in a for loop) for some manipulations(regarding my application) ...while its reading the files I want to display a progress bar...stating that its in process of reading files...I know it should be done using the concept of threading...but i am not quite sure how to do it..please help me with this

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  • Calling 32 bit unmanaged dlls from C# randomly failing

    - by Bert
    Hi, I'm having an issue when calling 32 bit delphi dll's from c# web site. The code generally runs fine, but occasionally I get an error Unable to load DLL '': The specified module could not be found. (Exception from HRESULT: 0x8007007E). This issue persists until I recycle the app pool for the site, and then it works fine again. On the same server, there is also a web service that is calling the same set of dlls. This web service doesn't seem to have the same issue that the web site has. Both applications are using .net framework 3.5, separate app pools on IIS. Here is the code I'm using to wrap the dlls: public sealed class Mapper { static Mapper instance = null; [DllImport("kernel32.dll")] private static extern bool SetDllDirectory(string lpPathName); private Mapper() { SetDllDirectory(ConfigManager.Path); } public static Mapper Instance { get { if (instance == null) { instance = new Mapper(); } return instance; } } public int Foo(string bar, ref double val) { return Loader.Foo(bar, ref val); } } public static class Loader { [DllImport("some.dll", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Unicode, EntryPoint = "foo")] public static extern int Foo(string bar, ref double val); } Then I call it like this: double val = 0.0; Mapper.Instance.Foo("bar", ref val); Any ideas as to why it would "randomly" Unable to load DLL '': The specified module could not be found. (Exception from HRESULT: 0x8007007E). The other problem is that I haven't been able to replicate the issue in the development environment. I thought that due to 2 applications calling the same dlls, that there could be some locks occurring. To replicate this, I created an app that spawned multiple threads and repeatedly called the 32bit dlls, and then used the web site to call these same dlls. I still couldn't replicate the issue. Some possible fixes that I can think of: Wrap the 32 bit dlls in web service (because the webservice doesn't seem to suffer from the same problem). But this may be worthless if it turns out that the web service also fails. Set up state server for the session state and periodically recycle the app pool for the site.This isn't fixing the problem, only avoiding it. Wrap the dll's in exe, and call that exe. Then I shouldn't get the same issue. But this also seems like a hacky solution. Implement the mapper class differently ? But how else should I be doing the call? The other draw back is that other applications are using this mapper, so I'd need to change there code too. Thanks

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