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  • MbUnit (gallio) and Visual Studio.Net Tests Not Completing or Debugging

    - by Davy
    Hi I'm using Gallio\MbUnit 3.1 with ReSharper and Visual Studio 2008. Everything is working well except this type of test: [Test] [Row("test@badEmail@_test.com")] [Row("test@badEmail@_test.")] public void IsValidEmail_Invalid_Emails_Should_Return_False(string invalidEmail) { Assert.IsFalse(AppHelper.IsValidEmail(invalidEmail), "Email validation failed for " + invalidEmail); } The test doesn't complete or go in to debug mode only when I pass in a parameter E.g. 'string invalidEmail'. If I remove that prameter it seems to work normally. It will run the test if I have: [Test] public void IsValidEmail_Invalid_Emails_Should_Return_False() { var invalidName = test@badEmail@_test.com"; Assert.IsFalse(AppHelper.IsValidEmail(invalidEmail), "Email validation failed for " + invalidEmail); } I appreciate that there may be better ways to achieve this test but I'm trying to work my way through a book and this is how it's explaining things. Any help is appreciated. Davy

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  • Print webpages problems :: looking for good tutorial to print web pages (build by Jquey ui, jqgrid ,

    - by Yosef
    Hi, I should print web-pages of website with jqgrid , Jquery calendar+ other Jquery ui+background images etc.. in server side its build with Zend Framework. I don't have experience and knowledge in web page printing,but i get this mission in my job. I need: 1. Good tutorials or book (i read about background images problem) to study this issue well (I have time for that). More practical instructions how print web pages that build with Jquery + Jquery UI + jqgrid (I know that Jquery UI have browsers compatibity issues vs yui (yahoo library)). Thanks for all great people here that helps, Yosef

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  • Scope of variables inside anonymous functions in C#

    - by Vinod
    I have a doubt in scope of varibles inside anonymous functions in C#. Consider the program below: delegate void OtherDel(int x); public static void Main() { OtherDel del2; { int y = 4; del2 = delegate { Console.WriteLine("{0}", y);//Is y out of scope }; } del2(); } My VS2008 IDE gives the following errors: [Practice is a class inside namespace Practice] 1.error CS1643: Not all code paths return a value in anonymous method of type 'Practice.Practice.OtherDel' 2.error CS1593: Delegate 'OtherDel' does not take '0' arguments. It is told in a book: Illustrated C# 2008(Page 373) that the int variable y is inside the scope of del2 definition. Then why these errors.

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  • What is an "incompletely constructed object"?

    - by Joonas Pulakka
    Goetz's Java Concurrency in Practice, page 41, mentions how this reference can escape during construction. A "don't do this" example: public class ThisEscape { public ThisEscape(EventSource source) { source.registerListener( new EventListener() { public void onEvent(Event e) { doSomething(e); } }); } } Here this is "escaping" via the fact that doSomething(e) refers to the enclosing ThisEscape instance. The book states: Publishing an object from within its constructor can publish an incompletely constructed object. This is true even if the publication is the last statement in the constructor. If the this reference escapes during construction, the object is considered not properly constructed. I don't quite get this. If the publication is the last statement in the constructor, hasn't all the constructing work been done before that? How come is this not valid by then? Apparently there's some voodoo going on after that, but what?

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  • What kind of knowledge do you need to invent a new programming language?

    - by systempuntoout
    I just finished to read "Coders at works", a brilliant book by Peter Seibel with 15 interviews to some of the most interesting computer programmers alive today. Well, many of the interviewees have (co)invented\implemented a new programming language. Some examples: Joe Armstrong: Inventor of Erlang L. Peter Deutsch: implementer of Smalltalk-80 Brendan Eich: Inventor of JavaScript Dan Ingalls: Smalltalk implementor and designer Simon Peyton Jones: Coinventor of Haskell Guy Steele: Coinventor of Scheme Is out of any doubt that their minds have something special and unreachable, and i'm not crazy to think i will ever able to create a new language; i'm just interested in this topic. So, imagine a funny\grotesque scenario where your crazy boss one day will come to your desk to say "i want a new programming language with my name on it..take the time you need and do it", which is the right approach to studying this fascinating\intimidating\magic topic? What kind of knowledge do you need to model, design and implement a brand new programming language?

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  • Suggestions for Single-Page Web Application Design?

    - by DaveDev
    My view is that unless you need to change the basic structure of the user interface, you should not have to reload the page at all for any user interactions. I'd like to approach my next ASP.NET MVC project with this in mind. Can anyone suggest any principles, patterns or practices* I should consider? Excellent book, btw. Still trying to wrap my head around some of the concepts though. I thought a question like this would help link the theory to a practical design. Thanks

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  • Good websites and/or books to learn game algorithms?

    - by Moshe
    I'm interested in learning video game algorithms. (For iPhone particularly, but generally as well. I assume certain concepts are the same.) I am best off (personally) learning from a book but websites are useful too. What has helped you learn game programming algorithms and concepts? EDIT: As per request, I'll clarify the types of algorithms... I was looking for any algorithms really, but I guess I was interested in (top-down view) platformer algorithms, but, now that you mention it, Seth, I do wonder about chess...

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  • Where to ask practical unit-testing questions?

    - by Ian Boyd
    Before i can understand unit testing, i have to see real world examples. Every book, blog, article, or answer i've seen gives hypothetical examples that don't apply to the/my real world. i really don't want to flood StackOverflow with hundreds of questions all titled "How do i unit-test this?" There must be another place i can go to ask for real solutions. Where can i go to get practical answers to unit-testing questions? Note: i would give an example question, but then people would get grumpy when i asked the 200 follow-up questions.

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  • Canny edge detection - grayscale images always coming up as 3-channel, unusable?

    - by cvcentral
    I am working through the book "Learning OpenCV" from the O'Reilly series and am trying to perform a canny edge detection sample. Any grayscale image I choose seems to come up as having 3 channels, and to the best of my knowledge, canny only works with single channel images, so this always fails. I am even using the images provided by OpenCV. Here is my code.. IplImage* doCanny(IplImage* in, double lowThresh, double highThresh, double aperture) { if(in->nChannels != 1) return(0); //canny only handles gray scale images IplImage* out = cvCreateImage(cvSize(in->width, in->height), IPL_DEPTH_8U, 1); cvCanny(in, out, lowThresh, highThresh, aperture); return(out); }; IplImage* img = cvLoadImage("someGrayscaleImage.jpg"); IplImage* out = doCanny(img, 10, 100, 3); Why might this always give me 3-channel images? How can I solve this?

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  • LaTeX: remove blank page after a \part or \chapter

    - by CaptSolo
    How to remove a blank page that gets added automatically after \part{} or \chapter{} in a book document class? I need to add some short text describing the \part. Adding some text after the part command results in at least 3 pages with an empty page between the part heading and the text: Part xx (empty) some text How to get rid of that empty page? P.S. Latex: How to remove blank pages coming between two chapters IN Appendix? is similar but it changes the behavior for the rest of the text while I need to remove the empty page for this one \part command only.

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  • JPA + Hibernate + Named Query + how to JOIN a subquery result

    - by Srihari
    Hi, Can anybody help me in converting the following native query into a Named Query? Native Query: SELECT usr1.user_id, urr1.role_id, usr2.user_id, urr2.role_id, usr1.school_id, term.term_name, count(material.material_id) as "Total Book Count", fpc.FOLLETT_PENDING_COUNT as "Follett Pending Count", rrc.RESOLUTION_REQUIRED_COUNT as "Resolution Required Count" FROM va_school sch JOIN va_user_school_rel usr1 on sch.school_id=usr1.school_id JOIN va_user_role_rel urr1 on usr1.user_id=urr1.user_id and urr1.role_id=1001 JOIN va_user_school_rel usr2 on sch.school_id=usr2.school_id JOIN va_user_role_rel urr2 on usr2.user_id=urr2.user_id and urr2.role_id=1002 JOIN va_term term on term.school_id = usr1.school_id JOIN va_class course on course.term_id = term.term_id JOIN va_material material on material.class_id = course.class_id LEFT JOIN (SELECT VA_CLASS.TERM_ID as "TERM_ID", COUNT(*) as "FOLLETT_PENDING_COUNT" FROM VA_CLASS JOIN VA_MATERIAL ON VA_MATERIAL.CLASS_ID = VA_CLASS.CLASS_ID WHERE VA_CLASS.reference_flag = 'A' AND trunc(VA_MATERIAL.FOLLETT_STATUS) = 0 GROUP BY VA_CLASS.TERM_ID) fpc on term.term_id = fpc.term_id LEFT JOIN (SELECT VA_CLASS.TERM_ID as "TERM_ID", COUNT(*) as "RESOLUTION_REQUIRED_COUNT" FROM VA_CLASS JOIN VA_MATERIAL ON VA_MATERIAL.CLASS_ID = VA_CLASS.CLASS_ID WHERE VA_CLASS.reference_flag = 'A' AND trunc(VA_MATERIAL.FOLLETT_STATUS) = 1 GROUP BY VA_CLASS.TERM_ID) rrc on term.term_id = rrc.term_id WHERE course.reference_flag = 'A' GROUP BY usr1.user_id, urr1.role_id, usr2.user_id, urr2.role_id, usr1.school_id, term.term_name, fpc.FOLLETT_PENDING_COUNT, rrc.RESOLUTION_REQUIRED_COUNT ORDER BY usr1.school_id, term.term_name; Thanks in advance. Srihari

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  • Algorithm on trajectory analysis.

    - by Arman
    Hello, I would like to analyse the trajectory data based on given templates. I need to stack the similar trajectories together. The data is a set of coordinates xy,xy,xy and the templates are again the lines defined by the set of control points. I don't know to what direction to go, maybe to Neural Networks or pattern recognition? Could you please advace me page, book or library to start with? kind regards Arman. PS. Is it the right place to ask the question?

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  • What kind of knowledge you need to invent a new programming language?

    - by systempuntoout
    I just finished to read "coders at works", a brilliant book by Peter Seibel with 15 interviews to some of the most interesting computer programmers alive today. Well, many of the interviewees have (co)invented\implemented a new programming language. For example: * Joe Armstrong: Inventor of Erlang * L. Peter Deutsch: implementer of Smalltalk-80 * Brendan Eich: Inventor of JavaScript * Dan Ingalls: Smalltalk implementor and designer * Simon Peyton Jones: Coinventor of Haskell * Guy Steele: Coinventor of Scheme Is out of any doubt that their minds have something special and unreachable, and i'm not crazy to think i will ever able to create a new language; i'm just interested in this topic. So, imagine a funny\grotesque scenario where your crazy boss one day will come to your desk to say "i want a new programming language with my name on it..take the time you need and do it", what will you start to study? What kind of knowledge do you need to model, design and implement a brand new programming language?

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  • Comparing Clojure books

    - by Michiel Borkent
    Currently there is (afaik) one completed Clojure book available: Programming Clojure by Stuart Halloway. Two are being written and partially available at Manning: The Joy of Clojure by Fogus and Houser Clojure in Action by Amit Rathore Another one is about to be published in May: Practical Clojure (The Definitive Guide) by Luke Van der Hart Are these books more or less the same and meant as a general introduction to Clojure? Does it make sense to buy them all, or is there a risk of having three very similar books? Will there be books that go into more specialized areas of Clojure and targetted for 'intermediate' or 'advanced' Clojure programmers?

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  • Current date in rails form

    - by Dean
    Hi, Im learning rails and exploring a bit away from the book and creating a simple application with added functionality as i increase my knowledge. Im writing a simple blog application and i have a field in the form called date added, i don't want this to be a field i want it to get the date from the server and place it in to the database automatically. How would i go about doing this? I was thinking of a hidden field but then unsure on how to process the date and insert it to the hidden field. Is this the wrong way of going about things? Thanks in Advance, Dean

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  • OpenCL: does it play well with OpenMP, can I connect other languages to it, etc.

    - by Cem Karan
    The 1.0 spec for OpenCL just came out a few days ago (Spec is here) and I've just started to read through it. I want to know if it plays well with other high performance multiprocessing APIs like OpenMP (spec) and I want to know what I should learn. So, here are my basic questions: If I am already using OpenMP, will that break OpenCL or vice-versa? Is OpenCL more powerful than OpenMP? Or are they intended to be complementary? Is there a standard way of connecting an OpenCL program to a standard C99 program (or any other language)? What is it? Does anyone know if anyone is writing an OpenCL book? I'm reading the spec, but I've found books to be more helpful.

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  • learning the Lower levels of computing

    - by Ben
    I am a software developer with four years experience in .Net development, I always like to keep up to date with the latest technologies (.net related normally) being released and love learning them. I didn't however go to university and learnt all I know through helpful colleagues, .Net courses, the internet and good old books. I feel that I am a good developer, but without learning the lower levels of a computer as you would in the first year of a computer related Uni course, I get lost when talking to people about a lot of more technical lower level computing. Is there a book(s) that anyone could recommend, that would cover the lower levels of what is going on when I click "Run" in Visual Studio? I feel out of my depth when my boss says to me "Thats running in the CPU cache" or "you're limited by disk reads there", and would like to feel more confident when talking about how the hardware talks to each other (CPU to RAM etc). Apologise if thats a vague question, or has been asked before (i did check and couldn't find anything on here that answers my question).

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  • Reading multiple files with PHPExcel

    - by KaOSoFt
    Hello there. I just recently started using this library (the one from CodePlex), but I ran into some issues. My goal is to use it so I can process some data from multiple Excel files, and send such data to a database, per file. I'm doing something like: foreach( $file_list as $file ) { $book = PHPExcel_IOFactory::load( $path . $file ); } So, inside the foreach I'm (for now) just showing the data to the user, but after five files, I get a memory error: Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 50688 bytes) in /var/www/test/classes/PHPExcel/Shared/OLERead.php on line 76 Is there a way to __destruct the object after each file is loaded, so space is reserved (made free) for the next file, instead of accumulating it, or do you rather know of a reason and work-around for this? Please let me know any suggestions you have. Thanks in advance.

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  • LinkedList cannot be serialised?

    - by iTayb
    Here are my classes: http://pastebin.com/3dc5Vb1t When I try to run BookStore b = new BookStore(); b.LoadFromXML(Server.MapPath("list.xml")); Label1.Text = b.ToString(); I get the following error: You must implement a default accessor on System.Collections.Generic.LinkedList`1[[Book, App_Code.cxsacizw, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null]] because it inherits from ICollection. The error source is XmlSerializer s = new XmlSerializer(typeof(BookStore)); When I tried to look for a solution on google, I found it that LinkedList has some problems with serialization. How can I deal with it? Thank you very much.

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  • Implementing Domain Driven Design

    - by Steve Dunn
    Is anyone using the techniques from Domain Driven Design? I've recently read the Eric Evans book of the same name (well, most of it!) and would be interested to hear from anyone who's implemented all/some of it in a project (particularly in C#/C++) I've kept this question open ended as I'd like to see as many comments as possible, but I have a few questions in particular: 1 - Should value types be real 'value types' if the language supports it? e.g. a struct in C# 2- Is there any feature in C# that makes clearer the association between the language and the model (for instance, this is an entity, this is an aggregate etc.)

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  • XML::LibXML Line Ending (whitespace) Problem.

    - by Gilbeg
    HI, I am parsing an XML file using LibXML in Perl. The problem that I have is the ending characters (whitespace) is treated as a text node. For instance, given an input like the following abc 123 The parser thinks that the number of child of node "books" is 3, they are: - text node (containing the char between and - element node of "book" - text node (containing the char between and Question is how do I tell LibXML to ignore whitespaces? I tried with no_blanks (that is $parser = XML::LibXML-new(no_blanks = 1) when construction the parser) but it seems that it has no effect. Thanks in advance

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  • Know any unobstrusive, simple GUI guidelines or design recommendations for notifications?

    - by Vinko Vrsalovic
    Hello again. I'm in the process of designing and testing various ideas for an application whose main functionality will be to notify users of occurring events and offer them with a choice of actions for each. The standard choice would be to create a queue of events showing a popup in the taskbar with the events and actions, but I want this tool to be the less intrusive and disrupting as possible. What I'm after is a good book or papers on studies of how to maximize user productivity in these intrinsically disruptive scenarios (in other words, how to achieve the perfect degree of annoying-ness, not too much, not too little). The user is supposedly interested in these events, they subscribe to them and can choose the actions to perform on each. I prefer books and papers, but the usual StackOverflow wisdom is appreciated as well. I'm after things like: Don't use popups, use instead X Show popups at most 3 seconds Show them in the left corner Use color X because it improves readability and disrupts less That is, cognitive aspects of GUI design that would help users in such a scenario.

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  • Adding # & search sign to TableIndex in UITableView

    - by sagar
    In iPhone native Phone book - there is a search character at the top & # character at the bottom. I want to add both of that character in my table Index. Currently I have implemented following code. atoz=[[NSMutableArray alloc] init]; for(int i=0;i<26;i++){ [atoz addObject:[NSString stringWithFormat:@"%c",i+65]]; } - (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{ return atoz; } How to have # character & search symbol in my UITableView? Thanks in advance for sharing your knowledge. Sagar

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  • View problem - how to show integer from activity in XML?

    - by Oliver Goossens
    Hi there, I started two days ago with android, gone through the hello android stuff and also started to read the Hello Android book, which is great. PROBLEM: I use in my app - VERY EASY APP- the XML output. So basically the main activity just tells the android to show the XML layout of main. But what if I have in the activity - code defined integer variable and I want this integer variable also be shown on the display? How do I PUSH the integer variable to the XML??? From main XML reference to other strings in XML is easy - @string/app_name ... but how do I use the integer variable from the activity? Please help Thank you Oliver

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  • How can I create a JTable where the first column is always in the JScrollPane viewport?

    - by voodoogiant
    What's the best way to set up a table in a JScrollPane such that the first column is always on the screen in the same position regardless of horizontal scrolling and overlaps columns that pass underneath? When the scrollbar is at the farthest left, the columns look normal, but as the user scrolls to the right, the secondary columns (2 and on) move underneath the first until the last column appears on the far right of the viewport? I found a sample taken from Eckstein's "Java Swing" book that sort of does this, but it doesn't allow resizing of the first column. I was thinking of some scheme where one JPanel held a horizontal struct and a table holding the secondary columns and another JPanel which floated over them (fixed regardless of scrolling). The struct would be to keep the viewport range constant as the first column floated around. Ideally I could do it with two tables using the same model, but I'm not sure if the whole idea is a naive solution.

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