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Microsoft WPF? Adobe AIR/Flex? Adobe Flash? Curl programming language? How does AJAX fit in? Given a server written in C++ .NET. The answer does depend really on what your application actually does and your platform requirements. If its a regular web application like gmail and you want it to work on lots of browsers and platforms; then I'd recommend a combination of HTML, CSS and [GWT](http://code.google.com/webtoolkit/) as this means your application code is all Java, its very easy to refactor modularise and maintain, there's a ton of Java programmers out there and the IDEs for Java are awesome (IntelliJ or eclipse etc). You can
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then use browser plugins like Siverlight or Flex if and when they make sense (e.g. like [Google finance](http://finance.google.com/finance) uses Flash for interactive graphs). If your application is highly graphical like a Visio type of thing or needs to embed Microsoft Office or something; you might wanna look at Silverlight/Flex/AIR particularly if you can kinda dictate the browser versions and platforms for an internal application. Though with client side there's no clear single answer (just look at the comments on this thread :) there are many options (Java Applets/Swing/JavaFX, Ajax, GWT, Air/Flex, Silverlight/.Net etc) which all have strengths and weaknesses. My recommendation for
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the communication between the client and your C++ server would be to expose your C++ application as a set of RESTful resources - then at any point in time you can easily write other kinds of clients in any language technology or framework.
[ 0.10022547841072083, 0.24688471853733063, 0.24990199506282806, 0.13064154982566833, 0.03529055416584015, 0.0013362276367843151, -0.10461773723363876, 0.28123384714126587, -0.22990180552005768, -0.6619579792022705, -0.11979741603136063, 0.6187876462936401, -0.11654715985059738, -0.104525528...
I need to know how to turn on Code Coverage when running TFS builds on a solution with a .testrunconfig file. There is an option in the testrunconfig file that is for code coverage, but when running a TFS build there is no code coverage results. I am running my tests using the \*Tests.dll mask and NOT using Test Lists (.vsmdi). How are you running the tests? Are you using a .vsmdi file or just specifying that you run all tests in \*Tests.dll assemblies? If it is the latter and you are using TFS 2008, then you need to add the following to
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the and of the first PropertyGroup in your TFSBuild.proj file for the build. ``` <RunConfigFile>$(SolutionRoot)\TestRunConfig.testrunconfig</RunConfigFile> ``` This points the build at your .testrunconfig so it can pick up the instructions to run code coverage.
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The title is pretty much self explanatory. Given two dates what is the best way of finding the number of week days using PHP? Week days being Monday to Friday. For instance, how would I find out that there are 10 week days in between `31/08/2008` and `13/09/2008`? ``` $datefrom = strtotime($datefrom, 0); $dateto = strtotime($dateto, 0); $difference = $dateto - $datefrom; $days_difference = floor($difference / 86400);
[ 0.13319596648216248, -0.16397635638713837, 0.5985132455825806, 0.1446160227060318, -0.24850063025951385, 0.22025886178016663, 0.07423102110624313, 0.06216871738433838, -0.4973039925098419, 0.005323243327438831, 0.09085983783006668, 0.1971236765384674, -0.05978039279580116, 0.39812248945236...
$weeks_difference = floor($days_difference / 7); // Complete weeks $first_day = date("w", $datefrom); $days_remainder = floor($days_difference % 7); $odd_days = $first_day + $days_remainder; // Do we have a Saturday or Sunday in the remainder? if ($odd_days > 7) { // Sunday $days_remainder--; } if ($odd_days > 6) {
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// Saturday $days_remainder--; } $datediff = ($weeks_difference * 5) + $days_remainder; ``` From here: <http://www.addedbytes.com/php/php-datediff-function/>
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I am going to hosting for files that user submits. I need to grab some data from the file and then move it to some directory. There two points of interest for the lifetime of this file. The first is when the data is being abstracted and the second is when the file is archived so that it can be shared. When data is being abstracted, I've thought that renaming the file to something unique or append a unique string to filename to keep it from overwriting other existing files. When the file is going to be archived, I've thought of three
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strategies. One is to keep all files uploaded from a certain data in one folder. (2006/sept/04, 2008/jan/05) The other is to keep a folder and keep filling it until some max number of files I want to keep in folder and then create another one (/folder001/, /folder002/, /folder003/, etc..). Another one is to create subfolders once they reach some threshold. So like (/j/jd/jde/jdelator) I've seen this in unix not sure how to explain this. The questions I have is what kind of strategies you guys have found useful or used? When data is being abstracted, I would choose something like : `filename
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+ millisec();` It is unlikely that two call to millisec will be the same, and filename is more userfriendly when accessing. The date strategy can be convenient if you decide to remove old and unused files : you only have to get the 2006 folder, and remove all that has not been accessed in the last year, according to your log. This also can be a good indication for your users, as they will know if it is a fresh file or not. The folderXYZ is only a variant of this one, replacing date with a tag each N files. The threshold subfolders helps you
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to keep the number of entries of your directories low, so access is faster. Note that this solution requires to sometimes move files (and then break some url if not mapped) when a particular directory grows. Another possibility is to use a DB with UID corresponding to filename location, and accessing file through <http://server.com/UID/filename.txt> . This way, the user saves the file as "filename.txt" which is convenient for him, and you know with the URL where to find the file (using the DB to transform UID to location). Note that the UID can be a checksum (MD5, SHA-1) to handle duplicates of the
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same file.
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Why would one choose [YAML](http://yaml.org/) over XML or any other formats? I agree with Sergio; YAML provides a format which is easily editable by humans, but also a good way to cleanly represent data structures. YAML tends to be much more human-readable, IMO. YAML is more of a data serialisation technique, rather than a markup language.
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I am currently using Hibernate Tools 3.1; I customized naming convention and DAO templates. The database (SQL Server 2005) in early development phase and I'm in charge of rebuilding the mappings, entities, DAOs, configuration, whatever. Each time I have to reverse-engineer the tables and so I lose every customization I made on the mappings (\*.hbm.xml files) like adjusting the **identity** columns, picking the fields used in **equals** and **toString**. I was considering to write the diff XML in a file and the "merge" that onto the generated mapping (see [my related question](https://stackoverflow.com/questions/80609/merge-xml-documents)) but I was wondering... is there any best
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practice/tool for dealing with these annoying, unavoidable, critical tasks? I'd strongly recommend against continual reverse engineering. Reverse engineering is a great one time thing, but changes need to be managed as changes to both the hbm and the database. We use migrations to manage db changes, and we include the associated changes in the hbm. If Hibernate has it (I believe it does) you may want to look into annotations instead of an hbm, they can be quite a bit easier to maintain.
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I want to find 2nd, 3rd, ... nth maximum value of a column. You could sort the column into descending format and then just obtain the value from the nth row. EDIT:: Updated as per comment request. ***WARNING*** completely untested! ``` SELECT DOB FROM (SELECT DOB FROM USERS ORDER BY DOB DESC) WHERE ROWID = 6 ``` Something like the above should work for Oracle ... you might have to get the syntax right first!
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I'm trying to get IKVM to build (see [this question](https://stackoverflow.com/questions/71599/how-to-get-ikvm-to-build-in-visual-studio-2008)) but now have encountered a problem not having to do with IKVM so I'm opening up a new question: When running nant on the IKVM directory with the Visual Studio 2008 Command Prompt (from the Start Menu), I get the following error: > ``` > ikvm-native-win32: > > [cl] Compiling 2 files to C:\ikvm-0.36.0.11\native\Release'. > > [cl]
[ 0.0766386166214943, 0.3372260332107544, -0.06169218569993973, -0.39452219009399414, -0.3619927167892456, 0.2737710773944855, 0.6141616106033325, 0.007798159494996071, -0.12451323866844177, -0.6756481528282166, 0.3291592001914978, 0.7672004103660583, -0.3280012607574463, -0.1156889572739601...
jni.c > [cl] os.c > [cl] C:\ikvm-0.36.0.11\native\os.c(25) : fatal error C1083: Cannot open include file: 'windows.h': No such > file or directory > [cl] Generating Code... > > BUILD FAILED > >
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C:\ikvm-0.36.0.11\native\native.build(17,10): > External Program Failed: cl (return code was 2) > > ``` I have the Platform SDK installed. What am I missing? I'm sure it's something simple... **Edit #1** I just checked - I do have the directory containing windows.h on the Path. **Edit #2** Found the answer (see my answer below): The directory containing windows.h needed to be in the "Include" path variable. OK here is the answer I ended up finding: rather than being on the Path, the directory with windows.h (in my case, C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include) needed
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to be set in the Include environment variable.
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I've been doing some work with the JAX-RS reference implementation (Jersey). I know of at least two other frameworks (Restlet & Apache CXF). My question is: Has anyone done some comparison between those frameworks and if so, which framework would you recommend and why? FWIW we're using Jersey as its packed full of features (e.g. WADL, implicit views, XML/JSON/Atom support) has a large and vibrant developer community behind it and has great [spring integration](http://www.javakaffee.de/blog/2008/04/21/jersey-spring-integration-mostly-complete/). If you use JBoss/SEAM you might find RESTeasy integrates a little better - but if you use Spring for Dependency Injection then Jersey seems the easiest, most popular, active
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and functional implementation.
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I have an Access 2007 form that is searchable by a combobox. When I add a new record, I need to update the combobox to include the newly added item. I assume that something needs to be done in AfterInsert event of the form but I can't figure out what. How can I rebind the combobox after inserting so that the new item appears in the list? The easiest way is to guarantee that the combobox is always up-to-date is to just requery the combobox once it gets the focus. Even if the recordset is then updated somewhere else, your combobox
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is always up-to-date. A simple TheCombobox.Requery in the OnFocus event should be enough.
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As the local subversion czar i explain to everyone to keep only source code and non-huge text files in the repository, not huge binary data files. Smaller binary files that are parts of tests, maybe. Unfortunately i work with *humans*! Someone is likely to someday accidentally commit a 800MB binary hulk. This slows down repository operations. Last time i checked, you can't delete a file from the repository; only make it not part of the latest revision. The repository keeps the monster for all eternity, in case anyone ever wants to recall the state of the repository for that date
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or revision number. Is there a way to really delete that monster file and end up with a decent sized repository? I've tried the svnadmin dump/load thing but it was a pain. Some extra info about this can be found at the blog post: [Subversion Obliterate, the missing feature](http://blog.projectnibble.org/2008/03/01/subversion-obliterate-the-forgotten-feature/) Be sure to read through the comments too, where Karl Fogel puts the article into perspective :-)
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I am seeing strange behaviour with the flash.media.Sound class in Flex 3. ``` var sound:Sound = new Sound(); try{ sound.load(new URLRequest("directory/file.mp3")) } catch(e:IOError){ ... } ``` However this isn't helping. I'm getting a stream error, and it actually sees to be in the Sound constructor. > Error #2044: Unhandled IOErrorEvent:. > text=Error #2032: Stream Error. at... ] I saw one example in the Flex docs where they add an event listener for IOErrorEvent, SURELY I don't have to do this, and can simply use try-catch? Can I set a null event listener? [IOError](http://livedocs.adobe.com/flex/3/langref/flash/errors/IOError.html) = target file cannot be found (or for some other reason cannot be read). Check your file's path. Edit:
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I just realized this may not be your problem, you're just trying to catch the IO error? If so, you can do this: ``` var sound:Sound = new Sound(); sound.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler); sound.load(new URLRequest("directory/file.mp3")); function ioErrorHandler(event:IOErrorEvent):void { trace("IO error occurred"); } ```
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getEmployeeNameByBatchId(int batchID) getEmployeeNameBySSN(Object SSN) getEmployeeNameByEmailId(String emailID) getEmployeeNameBySalaryAccount(SalaryAccount salaryAccount) or getEmployeeName(int typeOfIdentifier, byte[] identifier) -> In this methods the typeOfIdentifier tells if identifier is batchID/SSN/emailID/salaryAccount Which one of the above is better way implement a get method? These methods would be in a Servlet and calls would be made from an API which would be provided to the customers. Why not overload the getEmployeeName(??) method? getEmployeeName(int BatchID) getEmployeeName(object SSN)(bad idea) getEmployeeName(String Email) etc. Seems a good 'many' approach to me.
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A few years ago we started playing around with [XForms](http://www.w3.org/MarkUp/Forms/) from the W3C for a web app which required hundreds of custom forms. As they aren't currently supported natively by the major browsers, what parsers/tools are you using on your projects today? I'm not really interested in plugins - this needs to be something server side that emulates XForms. We use XForms for creating user interfaces for SOAP-based web services. Currently we settled with **Chiba** XForms engine (<http://chiba.sourceforge.net/>), but **Orbeon** ([http://www.orbeon.com/](http://www.orbeon.com)) actually seems more mature. Both are server-side engines, which convert XForms into HTML on the fly. The validation is performed on server
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side with the help of AJAX. This puts quite high demands on the server, so I wouldn't bet on those engines when creating sites with heavy traffic. Alternatives are well documented on XForms Wikipedia page: <http://en.wikipedia.org/wiki/XForms>.
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We have a series of closed source applications and libraries, for which we think it would make sense opening up the source code. What has been blocking us, so far, is the effort needed to clean up the code base and documenting the source before opening up. We want to open up the source only if we have a reasonable chance of the projects being successful -- i.e. having contributors. We are convinced that the code would be interesting to a large base of developers. **Which factors,** excluding the "interestingness" and "usefulness" of the project, **determine the success of an open source project?** Examples: *
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Cleanliness of code * Availability of source code comments * Fully or partially documented APIs * Choice of license (GPL vs. LGPL vs. BSD, etc...) * Choice of public repository * Investment in a public website There are a several things which dominate the successfulness of code. All of these must be achieved for the slightest chance of adoption. * Market - There must be a market for your open source project. If your project is a orange juicer in space, I doubt that you'll be very successful. You must make sure your project gets a large adoption amongst users and developers. It is twice as
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likely to succeed if you can get other corporations to adopt it as well. * Documentation - As you touched on earlier documentation is key. Amongst this documentation is commented code, architectural decisions, and API notes. Even if your documentation contains bugs, or bugs about your software it is ok. Remember, transparency is key. * Freedom - You must allow your code to be "free" - by this I mean free as in speech, not as in beer. If you have a feeling your market is being a library for other corporations a BSD license is optimal. If your piece of software
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is going to run on desktops then GPL is your choice. * Transparency - You must write software in a transparent environment. Once you go open source there is no hidden secrets. You must explain everything you do, and what you are doing. This will piss off developers like no other * Developer Community - A strong developer community is required. This must be existing. Only about 5% of users contribute back to the project. If someone notices there haven't been any releases for a year they wont think "Wow, this piece of software is done," they will think "developers must of
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dumped it." Keep your developers working on it, even if it means they are costing you money. * Communications - You must make sure you community is able to communicate. They must be able to file bugs, discuss workarounds, and publish patches. Without feedback, it is pointless to opensource the project * Availability - Making your code easy to get is necessary, even if it means pissing off lawyers. You have to make sure your project is easy to download, and utilize. You don't want the user to have to jump through 18 nag screens and sign a contract in order to
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do this. You have to make things simple, and clean
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Why wouldn't I choose abstract? What are the limitations to declaring a class member virtual? Can only methods be declared virtual? An abstract method or property (both can be virtual or abstract) can only be declared in an abstract class and cannot have a body, i.e. you can't implement it in your abstract class. A virtual method or property must have a body, i.e. you must provide an implementation (even if the body is empty). If someone want to use your abstract class, he will have to implement a class that inherits from it and explicitly implement the abstract methods and properties but
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can chose to not override the virtual methods and properties. Exemple : ``` using System; using C=System.Console; namespace Foo { public class Bar { public static void Main(string[] args) { myImplementationOfTest miot = new myImplementationOfTest(); miot.myVirtualMethod(); miot.myOtherVirtualMethod(); miot.myProperty = 42;
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miot.myAbstractMethod(); } } public abstract class test { public abstract int myProperty { get; set; } public abstract void myAbstractMethod();
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public virtual void myVirtualMethod() { C.WriteLine("foo"); } public virtual void myOtherVirtualMethod() { } } public class myImplementationOfTest : test { private int _foo; public override int myProperty
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{ get { return _foo; } set { _foo = value; } } public override void myAbstractMethod() { C.WriteLine(myProperty); } public override void myOtherVirtualMethod()
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{ C.WriteLine("bar"); } } } ```
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For a situation like capturing text incrementally, for example if you were receiving all of the output.write calls when a page was rendering, and those were being appended into a textwriter over a stringbuilder. Is there a more efficient way to do this? Something that exists in dotnet already preferably? Especially if there's a total size over a hundred k. Maybe something more like an array of pages rather than contiguous memory? I think StringBuilder is the most efficient way to append text in .net. To be more efficient you can specify the initial size of the StringBuilder when you create it.
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As the title states, I'd be interested to find a safe feature-based (that is, without using navigator.appName or navigator.appVersion) way to detect Google Chrome. By feature-based I mean, for example: ``` if(window.ActiveXObject) { // internet explorer! } ``` **Edit:** As it's been pointed out, the question doesn't make much sense (obviously if you want to implement a feature, you test for it, if you want to detect for a specific browser, you check the user agent), sorry, it's 5am ;) Let me me phrase it like this: Are there any javascript objects and/or features that are unique to Chrome... ``` isChrome = function() {
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return Boolean(window.chrome); } ```
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Which built in (if any) tool can I use to determine the allocation unit size of a certain NTFS partition ? Open an administrator command prompt, and do this command: ``` fsutil fsinfo ntfsinfo [your drive] ``` The Bytes Per Cluster is the equivalent of the allocation unit.
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Is there some way to block access from a referrer using a .htaccess file or similar? My bandwidth is being eaten up by people referred from <http://www.dizzler.com> which is a flash based site that allows you to browse a library of crawled publicly available mp3s. **Edit:** Dizzler was still getting in (probably wasn't indicating referrer in all cases) so instead I moved all my mp3s to a new folder, disabled directory browsing, and created a robots.txt file to (hopefully) keep it from being indexed again. Accepted answer changed to reflect futility of my previous attempt :P That's like saying you want to
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stop spam-bots from harvesting emails on your publicly visible page - it's very tough to tell the difference between users and bots without forcing your viewers to log in to confirm their identity. You could use robots.txt to disallow the spiders that actually follow those rules, but that's on their side, not your server's. There's a page that explains how to catch the ones that break the rules and explicitly ban them : [Using Apache to stop bad robots](http://www.evolt.org/article/Using_Apache_to_stop_bad_robots/18/15126/) [evolt.org] If you want an easy way to stop dizzler in particular using the .htaccess, you should be able to pop it open
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and add: ``` <Directory /directoryName/subDirectory> Order Allow,Deny Allow from all Deny from 66.232.150.219 </Directory> ```
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I re-image one of my machines regularly; and have a script that I run after the OS install completes to configure my machine; such that it works how I like. I happen to have my data on another drive...and I'd like to add code to my script to change the location of the Documents directory from "C:\Users\bryansh\Documents" to "D:\Users\bryansh\Documents". Does anybody have any insight, before I fire up regmon and really roll up my sleeves? in the aspx page: ``` <asp:FileUpload ID="FileUpload1" runat="server" /> ``` in the codebehind (c#): ``` string contentType = FileUpload1.PostedFile.ContentType ```
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Is there a pattern that is good to use when saving and loading different file formats? For example, I have a complicated class hierarchy for the document, but I want to support a few different file formats. I thought about the Strategy pattern, but I'm not convinced because of the need to access every part of the object in order to save and load it. You could use a [Visitor Pattern](http://en.wikipedia.org/wiki/Visitor_pattern), it allows to iterate over your hierachy doing different operations depending of the node the Visitor is currently processing. Bad news: you probably need to add at least a virtual method at the
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top of the hierarchy, and maybe redefine it in some derived classes, and the visitor still access the data of the nodes, but you decouple the file format, as different visitors implementations can write the data gathered in different ways. Take a look also at the [memento pattern](http://en.wikipedia.org/wiki/Memento_pattern) if hiding the class hierachy data is a must. [This article](http://www.ondotnet.com/pub/a/dotnet/2002/09/09/memento.html) could also be helpful. Edit: Link to the original [Memento pattern article](http://webcache.googleusercontent.com/search?q=cache:www.ondotnet.com/pub/a/dotnet/2002/09/09/memento.html) using google cache
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``` struct foo { unsigned x:1; } f; printf("%d\n", (int)sizeof(f.x = 1)); ``` What is the expected output and why? Taking the size of a bitfield lvalue directly isn't allowed. But by using the assignment operator, it seems we can still take the size of a bitfield type. What is the "size of a bitfield in bytes"? Is it the size of the storage unit holding the bitfield? Is it the number of bits taken up by the bf rounded up to the nearest byte count? Or is the construct undefined behavior because there is nothing in the standard that answers the above questions? Multiple compilers
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on the same platform are giving me inconsistent results. You are right, integer promotions aren't applied to the operand of `sizeof`: > The integer promotions are applied only: as part of the usual arithmetic conversions, to certain argument expressions, to the operands of the unary +, -, and ~ operators, and to both operands of the shift operators, as specified by their respective subclauses. The real question is whether bitfields have their own types. Joseph Myers told me: > The conclusion > from C90 DRs was that bit-fields have their own types, and from C99 DRs > was to leave whether they have their
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own types implementation-defined, and > GCC follows the C90 DRs and so the assignment has type int:1 and is not > promoted as an operand of sizeof. This was discussed in [Defect Report #315](http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_315.htm). To summarize: your code is legal but implementation-defined.
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got a new blog at wordpress few days ago (<http://ghads.wordpress.com>) and I want to post some code snippets now or then. Is there anyway to make it look like code without paying for extra plugins? See here: <http://en.support.wordpress.com/code/posting-source-code/> Wrap your code in these tags: [sourcecode language='css'] .. [/sourcecode] (or shorter [code lang='css'] .. [/code] ) Note that Visual Editor doesn't interpret the tags, you need to click Preview to see how it works. Available language codes: * actionscript3 * bash * clojure * coldfusion * cpp * csharp * css * delphi * erlang * fsharp * diff * groovy * html * javascript * java * javafx * matlab (keywords only) * objc * perl * php * text * powershell * python * r * ruby * scala * sql *
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vb * xml Hope that helps.
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What are the private IP address ranges? You will find the answers to this in [RFC 1918](http://www.faqs.org/rfcs/rfc1918.html). Though, I have listed them below for you. ``` 10.0.0.0 - 10.255.255.255 (10/8 prefix) 172.16.0.0 - 172.31.255.255 (172.16/12 prefix) 192.168.0.0 - 192.168.255.255 (192.168/16 prefix) ``` It is a common misconception that 169.254.0.0/16 is a private IP address block. This is not true. It is link local, basically it is meant to be only used within networks, but it isn't official RFC1918. Additional information
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about IPv4 addresses can be found in [RFC 3300](http://www.faqs.org/rfcs/rfc3300.html). On the other hand IPv6 doesn't have an equivalent to RFC1918, but any sort of site-local work should be done in fc00::/7. This is further touched on in [RFC 4193](http://www.faqs.org/rfcs/rfc4193.html).
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If you declare variables of type byte or short and attempt to perform arithmetic operations on these, you receive the error "Type mismatch: cannot convert int to short" (or correspondingly "Type mismatch: cannot convert int to byte"). ``` byte a = 23; byte b = 34; byte c = a + b; ``` In this example, the compile error is on the third line. Although the arithmetic operators are defined to operate on any numeric type, according the Java language specification (5.6.2 Binary Numeric Promotion), operands of type byte and short are automatically promoted to int before being handed to the operators. To perform arithmetic operations on
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variables of type byte or short, you must enclose the expression in parentheses (inside of which operations will be carried out as type int), and then cast the result back to the desired type. ``` byte a = 23; byte b = 34; byte c = (byte) (a + b); ``` Here's a follow-on question to the real Java gurus: why? The types byte and short are perfectly fine numeric types. Why does Java not allow direct arithmetic operations on these types? (The answer is not "loss of precision", as there is no apparent reason to convert to int in the first place.) Update: jrudolph suggests that
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this behavior is based on the operations available in the JVM, specifically, that only full- and double-word operators are implemented. Hence, to operator on bytes and shorts, they must be converted to int.
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In a server-side application running on Tomcat, I am generating full HTML pages (with header) based on random user-requested sites pulled down from the Internet. The client-side application uses asynchronous callbacks for requesting processing of a particular web page. Since processing can take a while, I want to inform the user about progress via polling, hence the callbacks. On server-side, after the web page is retrieved, it is processed and an "enhanced" version is created. Then this version has to go back to the user. Displaying the page as part of the page of the client-side application is not an option. Currently, the
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server generates a temporary file and sends back a link to it. This is clearly suboptimal. The next best solution I can come up with inolves creating a caching-DB that stores the HTML content together with its md5-sums or sha1-ids and then sends back a link to a servlet, with the hash-ID as an argument. The servlet then requests the site from the caching-DB. Is there any better solution? If not, which DB-backend would you propose? I'm thinking of SQLite. Part of the problem to be solved is: how do I push a page `<html>` to `</html>` back to client side? Let us
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assume the database character set is UTF-8, which is the recommended setting in recent versions of Oracle. In this case, some characters take more than 1 byte to store in the database. If you define the field as `VARCHAR2(11 BYTE)`, Oracle can use up to 11 bytes for storage, but you may not actually be able to store 11 characters in the field, because some of them take more than one byte to store, e.g. non-English characters. By defining the field as `VARCHAR2(11 CHAR)` you tell Oracle it can use enough space to store 11 characters, no matter how many bytes it
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takes to store each one. A single character may require up to 4 bytes.
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If I understand correctly, `ClickOnce` only checks for prerequisites with the first install of an application through the setup.exe file that contains the prerequisite information. If the user opens the app in the future it will check for new versions, but it does not launch the setup.exe again, thus not checking for any NEW prerequisites that might have been added. Is there any way to force ClickOnce to check the prerequisites again or does anyone have a good solution without asking the user to run the `setup.exe` again? Unfortunately, your users will have to re-run the setup.exe to check and install all
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the new prerequisites that you have added. Applications deployed using ClickOnce only check for application updates (if enabled), not prerequisites as it's the bootstrapper's job to make sure all dependencies are installed before the application is installed. I found this at [Microsoft's site](http://msdn.microsoft.com/en-us/library/h4k032e1.aspx): > The Setup.exe (bootstrapper) is > responsible for installing all > dependencies before your application > runs. This bootstrapper runs as a > separate process that is independent > of the ClickOnce run-time engine.
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I need an encoder that can convert mp3 files to he-aac (aka aac+). So far the best one I have found is [nero aac encoder](http://www.nero.com/eng/down-ndaudio.php) . I have two problemes with it : - Only one input format : wav . It is a little bit slow to transform mp3 files to wav and then to he-aac. - a free license for **non commercial** use. Too bad ffmpeg does not support he-aac ... There is a commercial solution, [on2 flix](https://flix.on2.com/), but it seems to be a golden hammer for the simple task I need to do. Nero AAC is the only one as far
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as I know. Even if FAAC supported HE-AAC it would be useless, since as an encoder its pretty awfully designed and its quality is not even competitive with LAME, let alone a good AAC encoder. Kostya on the FFMPEG team is currently working on an AAC encoder but it has a long way to go--its not ready for primetime with LC-AAC, let alone HE-AAC (its not even committed to the repository yet). The first step before anything will be to get the ffmpeg decoder to support HE-AAC; currently it can only be decoded through FAAD. I don't believe there is *any* HE-AAC
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encoder on any platform with a more permissive license than Nero's at this point in time.
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I had a discussion with a developer earlier today re identifying TCP packets going out on a particular interface with the same payload. He told me that the probability of finding a TCP packet that has an equal payload (even if the same data is sent out several times) is very low due to the way TCP packets are constructed at system level. I was aware this may be the case due to the system's MTU settings (usually 1500 bytes) etc., but what sort of probability stats am I really looking at? Are there any specific protocols that would make
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it easier identifying matching payloads? EDIT: Sorry, my original idea was ridiculous. You got me interested so I googled a little bit and found [this](http://monkey.org/~jose/software/flowgrep/). If you wanted to write your own tool you would probably have to inspect each payload, the easiest way would probably be some sort of hash/checksum to check for identical payloads. Just make sure you are checking the payload, not the whole packet. As for the statistics I will have to defer to someone with greater knowledge on the workings of TCP.
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I have three unordered lists that have been created as Scriptaculous Sortables so that the user can drag items within the lists and also between them: ``` var lists = ["pageitems","rowitems","columnitems"]; Sortable.create("pageitems", { dropOnEmpty: true, containment: lists, constraint: false }); Sortable.create("rowitems", { dropOnEmpty: true, containment: lists, constraint: false }); Sortable.create("columnitems", { dropOnEmpty: true, containment: lists, constraint: false }); ``` How can I make it so that if the user drags all the items out of a list, they're able to put them back again? At the moment it won't allow items to be dragged onto
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an empty list. Maybe the empty list has no height, and therefore no droppable area available. If that's the case, perhaps you just need to set a minimum height, or some padding on the block.
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There doesn't seem to be a dictionary.AddRange() method. Does anyone know a better way to copy the items to another dictionary without using a foreach loop. I'm using the System.Collections.Generic.Dictionary. This is for .NET 2.0. There's nothing wrong with a for/foreach loop. That's all a hypothetical AddRange method would do anyway. The only extra concern I'd have is with memory allocation behaviour, because adding a large number of entries could cause multiple reallocations and re-hashes. There's no way to increase the capacity of an existing Dictionary by a given amount. You might be better off allocating a new Dictionary with sufficient capacity
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for both current ones, but you'd still need a loop to load at least one of them.
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We have in the process of upgrading our application to full Unicode comptibility as we have recently got Delphi 2009 which provides this out of the box. I am looking for anyone who has experience of upgrading an application to accept Unicode characters. Specifically answers to any of the following questions. * We need to change VarChars to NVarchar, Char to NChar. Are there any gotchas here. * We need to update all sql statements to include N in front of any sql strings. So Update tbl\_Customer set Name = 'Smith' must become Update tbl\_Customer set Name = **N**'Smith' . Is there
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any way to default to this for certain Fields. It seems extraordinary this is still required. * Is it possible to get any defaults set up in SQLServer that will make this simpler? ps We also need to upgrade our Oracle code Oracle doesn't require you to use `nvarchar` to store Unicode strings—the server can be configured to store `varchar2` in UTF-8. If you only supported ASCII before, it should be transparent. That should prevent the need for all the application-side search-and-replace for `'` to `N'`. As for Damien's point: it might not help you now, but you should really make it a priority
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to get rid of non-parameterized queries. They are nothing but a drag on your system from a maintenance, performance, and safety standpoint.
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I'd like to build a query string based on values taken from 5 groups of radio buttons. Selecting any of the groups is optional so you could pick set A or B or both. How would I build the querystring based on this? I'm using VB.NET 1.1 The asp:Radiobuttonlist control does not like null values so I'm resorting to normal html radio buttons. My question is how do I string up the selected values into a querystring I have something like this right now: HTML: ``` <input type="radio" name="apBoat" id="Apb1" value="1" /> detail1 <input type="radio" name="apBoat" id="Apb2" value="2" /> detail2 <input type="radio" name="cBoat" id="Cb1" value="1" /> detail1 <input type="radio"
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name="cBoat" id="Cb2" value="2" /> detail2 ``` VB.NET ``` Public Sub btnSubmit_click(ByVal sender As Object, ByVal e As System.EventArgs) Dim queryString As String = "nextpage.aspx?" Dim aBoat, bBoat, cBoat bas String aBoat = "apb=" & Request("aBoat") bBoat = "bBoat=" & Request("bBoat") cBoat = "cBoat=" & Request("cBoat ") queryString += aBoat & bBoat & cBoat Response.Redirect(queryString) End Sub ``` Is this the best way to build the query string or should I take a different approach altogether? Appreciate all the help I can get. Thanks much. The easiest way would be to use a non-server-side <form> tag with the method="get" then when the
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form was submitted you would automatically get the querystring you are after (and don't forget to add <label> tags and associate them with your radio buttons): ``` <form action="..." method="get"> <input type="radio" name="apBoat" id="Apb1" value="1" /> <label for="Apb1">detail1</label> <input type="radio" name="apBoat" id="Apb2" value="2" /> <label for="Apb2">detail2</label> <input type="radio" name="cBoat" id="Cb1" value="1" /> <label for="Cb1">detail1</label> <input type="radio" name="cBoat" id="Cb2" value="2" /> <label for="Cb2">detail2</label> </form> ```
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I am looking for an easy way to check if an object in C# is serializable. As we know you make an object serializable by either implementing the *ISerializable* interface or by placing the *[Serializable]* at the top of the class. What I am looking for is a quick way to check this without having to reflect the class to get it's attributes. The interface would be quick using an *is* statement. Using @Flard's suggestion this is the code that I have come up with, scream is there is a better way. ``` private static bool IsSerializable(T obj) { return ((obj is ISerializable)
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|| (Attribute.IsDefined(typeof (T), typeof (SerializableAttribute)))); } ``` Or even better just get the type of the object and then use the IsSerializable property on the type: ``` typeof(T).IsSerializable ``` Remember though this this seems to only just the class that we are dealing with if the class contains other classes you probably want to check them all or try and serialize and wait for errors as @pb pointed out. You have a lovely property on the `Type` class called `IsSerializable`.
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We have a NET app that gets installed to the Program Files folder. The app itself writes some files and creates some directories to its app folder. But when a normal windows user tries to use our application it crashes because that user does not have permission to write to app folder. Is there any folder in both WinXP and WinVista to which all users have writing permissions by default? All User folder or something like that? There is no such folder. But you can create one. There is CSIDL\_COMMON\_APPDATA which in Vista maps to %ProgramData% (c:\ProgramData) and in XP maps to c:\Documents and Settings\AllUsers\Application
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Data Feel free to create a folder there in your installer and set the ACL so that everyone can write to that folder. Keep in mind that COMMON\_APPDATA was implemented in Version 5 of the common controls library which means that it's available in Windows 2000 and later. In NT4, you can create that folder in your installation directory and in Windows 98 and below it doesn't matter anyways due to these systems not having a permission system anyways. Here is some sample InnoSetup code to create that folder: ``` [Dirs] Name: {code:getDBPath}; Flags: uninsalwaysuninstall; Permissions: authusers-modify [Code] function getDBPath(Param: String): String; var Version: TWindowsVersion; begin Result
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:= ExpandConstant('{app}\data'); GetWindowsVersionEx(Version); if (Version.Major >= 5) then begin Result := ExpandConstant('{commonappdata}\myprog'); end; end; ```
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I am trying to use MinGW to compile a C program under Windows XP. The gcc.exe gives the following error: **stdio.h : No such file or directory** The code (hello.c) looks like this: ``` #include < stdio.h > void main() { printf("\nHello World\n"); } ``` I use a batch file to call gcc. The batch file looks like this: ``` @echo off set OLDPATH=%PATH% set path=C:\devtools\MinGW\bin;%PATH% set LIBRARY_PATH=C:\devtools\MinGW\lib set C_INCLUDE_PATH=C:\devtools\MinGW\include gcc.exe hello.c set path=%OLDPATH% ``` I have tried the option **-I** without effect. What do I do wrong? Try changing the first line to: ``` #include <stdio.h> ``` without the spaces. It is trying to look for a file called " stdio.h " with a space at the beginning and
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end.
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In .NET, after this code, what mechanism stops the `Thread` object from being garbage collected? ``` new Thread(Foo).Start(); GC.Collect(); ``` Yes, it's safe to assume **something** has a reference to the thread, I was just wandering what exactly. For some reason Reflector doesn't show me `System.Threading`, so I can't dig it myself (I know MS released the source code for the .NET framework, I just don't have it handy). The runtime keeps a reference to the thread as long as it is running. The GC wont collect it as long as anyone still keeps that reference.
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I'd like to add a method `AddDefaultNamespace()` to the String class in Java so that I can type `"myString".AddDefaultNamespace()` instead of `DEFAULTNAMESPACE + "myString"`, to obtain something like `"MyDefaultNameSpace.myString"`. I don't want to add another derived class either (`PrefixedString` for example). Maybe the approach is not good for you but I personally hate using `+`. But, anyway, is it possible to add new methods to the String class in Java? Thanks and regards. `String` is a final class which means it cannot be extended to work on your own implementation.
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Is there a way to hide the google toolbar in my browser programmable? You haven't said which browser you are using so I'm going to assume Internet Explorer\* and answer No. If JavaScript on a web page could manipulate the browser, it would be a serious security hole and could create a lot of confusion for users. So no... for a good reason: Security. \*. If you were using Firefox, and were talking about JavaScript within an extension to manipulate and theme the window chrome then this would be a different story.
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Is is possible to get login credentials such as name/id if user does login by OpenId? There are two accepted methods for retrieving these kind of things by OpenID: SReg and Attribute Exchange (AX). Both of these are extensions to the standard OpenID specification; SReg is the older of the two and specifies a set of fields that can be requested and sent with authentication, whereas AX allows requesting of any attribute. Both of the specification documents are pretty concise on how they work, although it's difficult to guage what the standard "names" are for attributes to be requested from AX. Usually,
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servers tend to implement the SReg names. [OpenID Simple Registration Extension Specification 1.0](http://openid.net/specs/openid-simple-registration-extension-1_0.html) [OpenID Attribute Exchange Specification 1.0 Final](http://openid.net/specs/openid-attribute-exchange-1_0.html)
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Given the following JSON Date representation: ``` "\/Date(1221644506800-0700)\/" ``` How do you deserialize this into it's JavaScript Date-type form? I've tried using MS AJAX JavaScrioptSerializer as shown below: ``` Sys.Serialization.JavaScriptSerializer.deserialize("\/Date(1221644506800-0700)\/") ``` However, all I get back is the literal string date. Provided you know the string is definitely a date I prefer to do this : ``` new Date(parseInt(value.replace("/Date(", "").replace(")/",""), 10)) ```
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I have a version number of the following form: version.release.modification where version, release and modification are either a set of digits or the '\*' wildcard character. Additionally, any of these numbers (and any preceding .) may be missing. So the following are valid and parse as: ``` 1.23.456 = version 1, release 23, modification 456 1.23 = version 1, release 23, any modification 1.23.* = version 1, release 23, any modification 1.* = version 1, any release, any modification 1 = version 1, any release, any modification *
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= any version, any release, any modification ``` But these are not valid: ``` *.12 *123.1 12* 12.*.34 ``` Can anyone provide me a not-too-complex regex to validate and retrieve the release, version and modification numbers? I'd express the format as: > "1-3 dot-separated components, each numeric except that the last one may be \*" As a regexp, that's: ``` ^(\d+\.)?(\d+\.)?(\*|\d+)$ ``` [Edit to add: this solution is a concise way to validate, but it has been pointed out that extracting the values requires extra work. It's a matter of taste whether to deal with this by complicating the regexp, or by processing the matched groups. In my solution, the groups capture the
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