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  • How to unit test business rules?

    - by Robert Lamb
    I need a unit test to make sure I am accumulating vacation hours properly. But vacation hours accumulate according to a business rule, if the rule changes, then the unit test breaks. Is this acceptable? Should I expose the rule through a method and then call that method from both my code and my test to ensure that the unit test isn't so fragile? My question is: What is the right way to unit test business rules that may change?

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  • Postback not working with ASP.NET Routing (Validation of viewstate MAC failed)

    - by Robert
    Hi. I'm using the ASP.NET 3.5 SP1 System.Web.Routing with classic WebForms, as described in http://chriscavanagh.wordpress.com/2008/04/25/systemwebrouting-with-webforms-sample/ All works fine, I have custom SEO urls and even the postback works. But there is a case where the postback always fails and I get a: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Here is the scenario to reproduce the error: Create a standard webform mypage.aspx with a button Create a Route that maps "a/b/{id}" to "~/mypage.aspx" When you execute the site, you can navigate http://localhost:XXXX/a/b/something the page works. But when you press the button you get the error. The error doen't happen when the Route is just "a/{id}". It seems to be related to the number of sub-paths in the url. If there are at least 2 sub-paths the viewstate validation fails. You get the error even with EnableViewStateMac="false". Any ideas? Is it a bug? Thanks

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  • php fopen function dies, though I have file permissions set to read and write

    - by Matthew Robert Keable
    I'm following a tutorial on php, and am having difficulty getting this to work. I set the appropriate directory permissions to read and write, but every time I run this, I get the die string. The code is: $ourFileName = "testFile.txt"; $ourFileHandle = fopen($ourFileName, 'w') or die("can't open file"); fclose($ourFileHandle); As far as my basic understanding goes, if "testFile.txt" does not exist, fopen should create that file (I have basic knowledge of Python, and remember this same principle in that language). But it...it doesn't. Even if I create the aforementioned file, and put it up, that line of code still returns a die string. My hosting account does not give me permission to execute. Is this a problem? My server runs on Windows. I am using Dreamweaver CS5, on OSX 10.5.8. I've done some searching on this, and see other people having similar issues - but none of them keyed to exactly my range of problems. Being that I'm a beginner, I feel that it might be something I'm overlooking. Thanks!!

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  • View dynamic code in Visual Studio

    - by Robert
    I generate a dynamic assembly with CSharpCodeProvider, from a C# source saved into a string. I can run the synamic code at runtime, but if I pause the execution Visual Studio doesn't show me the dinamic source code in the call stack. It says "External code" and I can't step into that source code. I think VS can't find PDB or other debug info. Can you help me?

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  • Why isn't DBIx::Class::Schema::Loader creating my classes?

    - by Robert Wohlfarth
    I am trying to generate static schemas using DBIx::Class in Perl. The command shown below outputs a Schema.pm and no other files. Any idea what I'm doing wrong, or how to to debug this? U:\wohlfarj\Software\PARS>perl -MDBIx::Class::Schema::Loader=make_schema_at,dump_to_dir:.\lib -e "make_schema_at('PARS::Schema',{debug=>1},['dbi:ODBC:PARS','user','password',{AutoCommit=>0}])" Dumping manual schema for PARS::Schema to directory .\lib ... Schema dump completed. I'm using Strawberry Perl on Windows XP. The database is SQL Server 2000, accessed through an ODBC connection. I can successfully run queries using plain old DBI with the same ODBC connection.

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  • Why is my Extension Method not showing up in my test class?

    - by Robert Harvey
    I created an extension method called HasContentPermission on the System.Security.Principal.IIdentity interface: namespace System.Security.Principal { public static bool HasContentPermission (this IIdentity itentity, int contentID) { // I do stuff here return result; } } And I call it like this: bool hasPermission = User.Identity.HasPermission(contentID); Works like a charm. Now I want to unit test it. To do that, all I really need to do is call the extension method directly, so: using System.Security.Principal; namespace MyUnitTests { [TestMethod] public void HasContentPermission_PermissionRecordExists_ReturnsTrue() { IIdentity identity; bool result = identity.HasContentPermission(... But HasContentPermission won't intellisense. I tried creating a stub class that inherits from IIdentity, but that didn't work either. Why? Or am I going about this the wrong way?

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  • Access violations in strange places when using Windows file dialogs

    - by Robert Oschler
    A long time ago I found out that I was getting access violations in my code due to the use of the Delphi Open File and/or Save File dialogs, which encapsulate the Windows dialogs. I asked some questions on a few forums and I was told that it may have been due to the way some programs add hooks to the shell system that result in DLLs getting injected in every process, some of which can cause havoc with a program. For the record, the programming environment I use is Delphi 6 Professional running on Windows XP 32-bit. At the time I got around it by not using Delphi's Dialog components and instead calling straight into comdlg32.dll. This solved the problem wonderfully. Today I was working with memory mapped files for the first time and sure enough, access violations started cropping up in weird parts of the code. I tried my comdlg32.dll direct calls and this time it didn't help. To isolate the problem as a test I created a list box with the exact same files I was using during testing. These are the exact same test files I was selecting from an Open File dialog and then launching my memory mapped file with. I set things up so that by clicking on a file in the list box, I would use that file in my memory mapped file test instead of calling into a comdlg32.dll dialog function to select a test file. Again, the access violatons vanished. To show you how dramatic a fix it was I went from experiencing an access violation within 1 to 3 trials to none at all. Unfortunately, it's going to bite me later on of course when I do need to use file dialogs. Has anyone else dealt with this issue too and found the real culprit? Did any of you find a solution I could use to fix this problem instead of dancing around it like I am now? Thanks in advance.

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  • Multithread Communication

    - by Robert
    I'm creating a WPF application that uses a custom object to populate all the controls. The constructor of that object is initiated by an EventHandler that waits for an API. The problem I'm having is when I try to access any information from that object using a button for example, it returns an error saying "The calling thread cannot access this object because a different thread owns it". I'm assuming this is because the EventHandler creates a new thread which doesn't allow the MainThread to have access to it. Any ideas on how to get around this?

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  • How can I make a Twitter style alert stick to the top of the window?

    - by Robert Robb
    There is an excellent code example on how to make nice jQuery Twitter style alerts here: http://blog.codecrate.com/2009/10/twitter-style-alerts-in-rails.html $(function () { var alert = $('.alert'); if (alert.length > 0) { alert.show().animate({height: alert.outerHeight()}, 200); window.setTimeout(function() { alert.slideUp(); }, 3000); } }); However, one thing that the code doesn't include is functions to stick the alert div to the top of the window, no matter how far down the page the user has scrolled. I have found a few examples but nothing seems to play nice with this existing code. Any ideas?

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  • Which SOA architecture is most appropriate for a Java application?

    - by Robert Greiner
    I am currently working on a pretty large Java 6 application where we are looking to split some of our functionality out into a service oriented architecture. It seems that the primary SOA framework for the application space is OSGi and I have been looking into Felix and Knopplerfish but I wanted to make sure that this isn't my only option. Does it make sense to use an actual web service protocol for our application like SOAP, even though we are not building a web app? Is this even acceptable? Have any of you used an implementation of OSGi (Felix, etc.) with your desktop application? if so, how did it go? Do you know of anything better? We're all pretty new to SOA here so any help would be greatly appreciated.

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  • iPhone - UIView Animation not looping correctly

    - by Robert
    Hey all, got a little problem here and can't figure out what I am doing wrong. I am trying to animate a UIView up and down repeatedly. When I start it, it goes down correctly and then back up but then immediately shoots to the "final" position of the animation. Code is as follows: UIImageView *guide = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"image.png"]]; guide.frame = CGRectMake(250, 80, 30, 30); [self.view addSubview:guide]; [UIView beginAnimations:nil context:nil]; [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut]; [UIView setAnimationDuration:2]; [UIView setAnimationRepeatAutoreverses:YES]; [UIView setAnimationBeginsFromCurrentState:YES]; guide.frame = CGRectMake(250, 300, 30, 30); [UIView setAnimationRepeatCount:10]; [UIView commitAnimations]; Thanks in advance!

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  • How to remove commas etc form a matrix in python

    - by robert
    say ive got a matrix that looks like: [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] how can i make it on seperate lines: [[0, 0, 0, 0, 0], [0, 0, 0, 0, 0], [0, 0, 0, 0, 0]] and then remove commas etc: 0 0 0 0 0 And also to make it blank instead of 0's, so that numbers can be put in later, so in the end it will be like: _ 1 2 _ 1 _ 1 (spaces not underscores) thanks

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  • Is gethostbyname guaranteed to return hostent structures with IPv4 addresses?

    - by Robert
    I cannot use getaddrinfo(...) for resolving hostnames and therefore must stick to gethostbyname(...) Is the gethostbyname(...) function guaranteed to return hostent structures that contain only IPv4 (AF_INET) addresses on success, so that the following code would always lead to an IPv4 address: int resolve(const char *name, struct in_addr *addr) { struct hostent *he = gethostbyname(name); if (!he) return 1; memcpy(addr,he->h_addr_list[0],4); return 0; }

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  • [SOLVED] javascript insertBefore() Method

    - by Robert
    I'm trying to insert a TH as the first column. But so far always put it at the end of all columns. Any help will be appreciate it. Thanks var someNode = document.createElement("th"); someNode.innerHTML = "Hello"; var sp = document.getElementById("table").getElementsByTagName("thead")[0].getElementsByTagName("tr")[0]; var ref = document.getElementById("table").getElementsByTagName("thead")[0].getElementsByTagName("tr")[0].getElementsByTagName("th")[0]; sp.insertBefore(someNode,ref);

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  • What is a good Very-High level UI framework for JavaScript?

    - by Robert Gould
    I need to write a temporary Web-based graphical front-end for a custom server system. In this case performance and scalability aren't issues, since at most 10 people may check the system simultaneously. Also it should be PHP or Python (server) & JavaScript (client) (can't use Flex or Silverlight for very specific non-programming related issues). So I know I could use YUI or jQuery, but was wondering if there is something even more high-level that would say allow me to write such a little project within a few hours of work, and get done with it. Basically I want to be as lazy as possible (this is throw-away code anyways) and get the job done in as little time as possible. Any suggestions?

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  • Pros and Cons of Different macro function / inline methods in C

    - by Robert S. Barnes
    According to the C FAQ, there are basically 3 practical methods for "inlining" code in C: #define MACRO(arg1, arg2) do { \ /* declarations */ \ stmt1; \ stmt2; \ /* ... */ \ } while(0) /* (no trailing ; ) */ or #define FUNC(arg1, arg2) (expr1, expr2, expr3) To clarify this one, the arguments are used in the expressions, and the comma operator returns the value of the last expression. or using the inline declaration which is supported as an extension to gcc and in the c99 standard. The do { ... } while (0) method is widely used in the Linux kernel, but I haven't encountered the other two methods very often if at all. I'm referring specifically to multi-statement "functions", not single statement ones like MAX or MIN. What are the pros and cons of each method, and why would you choose one over the other in various situations?

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  • JPA concatenating table names for parent/child @OneToMany

    - by Robert
    We are trying to use a basic @OneToMany relationship: @Entity @Table(name = "PARENT_MESSAGE") public class ParentMessage { @Id @Column(name = "PARENT_ID") @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer parentId; @OneToMany(fetch=FetchType.LAZY) private List childMessages; public List getChildMessages() { return this.childMessages; } ... } @Entity @Table(name = "CHILD_MSG_USER_MAP") public class ChildMessage { @Id @Column(name = "CHILD_ID") @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer childId; @ManyToOne(optional=false,targetEntity=ParentMessage.class,cascade={CascadeType.REFRESH}, fetch=FetchType.LAZY) private ParentMessage parentMsg; public ParentMessage getParentMsg() { return parentMsg; } ... } ChildMessage child = new ChildMessage(); em.getTransaction().begin(); ParentMessage parentMessage = (ParentMessage) em.find(ParentMessage.class, parentId); child.setParentMsg(parentMessage); List list = parentMessage.getChildMessages(); if(list == null) list = new ArrayList(); list.add(child); em.getTransaction().commit(); We receive the following error. Why is OpenJPA concatenating the table names to APP.PARENT_MESSAGE_CHILD_MSG_USER_MAP? Of course that table doesn't exist.. the tables defined are APP.PARENT_MESSAGE and APP.CHILD_MSG_USER_MAP Caused by: org.apache.openjpa.lib.jdbc.ReportingSQLException: Table/View 'APP.PARENT_MESSAGE_CHILD_MSG_USER_MAP' does not exist. {SELECT t1.CHILD_ID, t1.PARENT_ID, t1.CREATED_TIME, t1.USER_ID FROM APP.PARENT_MESSAGE_CHILD_MSG_USER_MAP t0 INNER JOIN APP.CHILD_MSG_USER_MAP t1 ON t0.CHILDMESSAGES_CHILD_ID = t1.CHILD_ID WHERE t0.PARENTMESSAGE_PARENT_ID = ?} [code=30000, state=42X05]

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  • Passing a list of files to javac

    - by Robert Menteer
    How can I get the javac task to use an existing fileset? In my build.xml I have created several filesets to be used in multiple places throughout build file. Here is how they have been defined: <fileset dir = "${src}" id = "java.source.all"> <include name = "**/*.java" /> </fileset> <fileset dir = "${src}" id = "java.source.examples"> <include name = "**/Examples/**/*.java" /> </fileset> <fileset dir = "${src}" id = "java.source.tests"> <include name = "**/Tests/*.java" /> </fileset> <fileset dir = "${src}" id = "java.source.project"> <include name = "**/*.java" /> <exclude name = "**/Examples/**/*.java" /> <exclude name = "**/Tests/**/*.java" /> </fileset> I have also used macrodef to compile the java files so the javac task does not need to be repeated multiple times. The macro looks like this: <macrodef name="compile"> <attribute name="sourceref"/> <sequential> <javac srcdir = "${src}" destdir = "${build}" classpathref = "classpath" includeantruntime = "no" debug = "${debug}"> <filelist dir="." files="@{sourceref}" /> <-- email is about this </javac> </sequential> What I'm trying to do is compile only the classes that are needed for specific targets not all the targets in the source tree. And do so without having to specify the files every time. Here are how the targets are defined: <target name = "compile-examples" depends = "init"> <compile sourceref = "${toString:java.source.examples}" /> </target> <target name = "compile-project" depends = "init"> <compile sourceref = "${toString:java.source.project}" /> </target> <target name = "compile-tests" depends = "init"> <compile sourceref = "${toString:java.source.tests}" /> </target> As you can see each target specifies the java files to be compiled as a simi-colon separated list of absolute file names. The only problem with this is that javac does not support filelist. It also does not support fileset, path or pathset. I've tried using but it treats the list as a single file name. Another thing I tried is sending the reference directly (not using toString) and using but include does not have a ref attribute. SO THE QUESTION IS: How do you get the javac task to use a reference to a fileset that was defined in another part of the build file? I'm not interested in solutions that cause me to have multiple javac tasks. Completely re-writting the macro is acceptable. Changes to the targets are also acceptable provided redundant code between targets is kept to a minimum. p.s. Another problem is that fileset wants a comma separated list. I've only done a brief search for a way to convert semi-colons to commas and haven't found a way to do that. p.p.s. Sorry for the yelling but some people are too quick to post responses that don't address the subject.

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  • What happens when we combine RAII and GOTO ?

    - by Robert Gould
    I'm wondering, for no other purpose than pure curiosity (because no one SHOULD EVER write code like this!) about how the behavior of RAII meshes with the use of Goto (lovely idea isn't it). class Two { public: ~Two() { printf("2,"); } }; class Ghost { public: ~Ghost() { printf(" BOO! "); } }; void foo() { { Two t; printf("1,"); goto JUMP; } Ghost g; JUMP: printf("3"); } int main() { foo(); } When running the following code in VS2005 I get the following output: 1,2,3 BOO! However I imagined, guessed, hoped that 'BOO!' wouldn't actually appear as the Ghost should have never been instantiated (IMHO, because I don't know the actual expected behavior of this code). Any Guru out there knows what's up? Just realized that if I instantiate an explicit constructor for Ghost the code doesn't compile... class Ghost { public: Ghost() { printf(" HAHAHA! "); } ~Ghost() { printf(" BOO! "); } }; Ah, the mystery ...

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  • Contributing to the Status Bar/Trim in Eclipse RCP

    - by Robert Wilson
    I have a requirement to show a status indicator in the status bar of an Eclipse application. I can't contribute through the ApplicationWindowAdviser (another team owns the core product), but I feel sure that I should be able to contribute through an extension point. Despite much googling, I can't find anything describing how to do this.

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  • What's the coolest hack you've seen or done?

    - by Robert S.
    As programmers, we've all put together a really cool program or pieced together some hardware in an interesting way to solve a problem. Today I was thinking about those hacks and how some of them are deprecated by modern technology (for example, you no longer need to hack your Tivo to add a network port). In the software world, we take things like drag-and-drop on a web page for granted now, but not too long ago that was a pretty exciting hack as well. One of the neatest hardware hacks I've seen was done by a former coworker at a telecom company years ago. He had a small portable television in his office and he would watch it all day long while working. To get away with it, he wired a switch to the on/off that was activated via his foot under his desk. What's the coolest hardware or software hack you've personally seen or done? What hack are you working on right now?

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  • Is there a way to determine if a <select> dropdown menu is open?

    - by Robert
    I'm looking for a way to determine if/when a <select> element's menu is open. I don't need to force it to open or close, just figure out if it's open or closed at a given time. I can listen to events for focus/blur, mouseup/mousedown, etc., but I don't think I can reliably figure out the state of the menu from those events. For example, mousedown followed by mouseup could mean the user clicked and dragged to a selection and released (in which case the menu is now closed) or clicked and released to open the menu (in which case the menu is open). It also seems likely that the specific behavior of dropdown menus is browser-dependent. I know I could do this if I roll my own dropdown menu, but I prefer to use <select>. Is there a reliable way to find out if a dropdown menu is open? Or is this something that Javascript can't know?

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  • jQuery Dialog - Remote Page Javascript not running in FF / Chrome

    - by Robert
    Hey SO, I've created a page intended only to be opened via modal. This page contains a calendar of the User's favorite events...etc. I'm using the jQuery Dialog and FullCalendar plugins to do this. In IE, there is not issue...everything works fine. However, the Javascript on the remote page (Calendar.aspx) is never getting executed in FF or Chrome. Here's my code. SomeRandomPage.aspx $("#showcalendar").click(function() { var dialog = $('<div style="display:hidden"></div>').appendTo('body'); // load remote content dialog.load("Calendar.aspx", {}, function(responseText, textStatus, XMLHttpRequest) { dialog.dialog( { modal: true, width: 750, resizable: false, draggable: false, title: "My Calendar", closeOnEscape: false, close: function(event, ui) { $(this).remove(); } } ); }); }); } Calendar.aspx <!-- Necessary js above --> <div id="calendar"></div> <script> $(document).ready(function() { alert("HERE"); //Doesn't work in FF or Chrome. Works in IE $('#calendar').fullCalendar({ header: { left: 'prev,next today', center: 'title', right: 'month' }, editable: false, events: '/webservices/CalendarEvents.ashx' }); }); </script>

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