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  • jQuery Roundabout IE images pixellated

    - by luke
    Hi at http://lunatestsite.co.uk my jQuery roundabout near the bottom of the homepage is problematic in IE7 and 8 - book cover images blurred/pixellated. http://stackoverflow.com/questions/1985303/ie-image-display-problems/2355921#2355921 suggests something to do with em sizing in IE being the root of it but I don't really understand the conclusion reached there. I don't think opacity is an issue in this. Any help gratefully appreciated, this is more or less last on more checklist for this site! Thanks Edit: fixed by resetting to font-size: 1em before the height and width em declarations for the roundable-movable-item and roundabout-movable-item img. Now working in IE7 and 8.

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  • [Rails] OAuth with Digg API

    - by Karl
    I'm attempting to get Rails to play nice with the Digg API's OAuth. I'm using the oauth gem (ruby one, not the rails one). My code looks approximately like this: @consumer = OAuth::Consumer.new(API_KEY, API_SECRET, :scheme => :header, :http_method => :post, :oauth_callback => "http://locahost:3000", :request_token_url => 'http://services.digg.com/1.0/endpoint?method=oauth.getRequestToken', :access_token_url => 'http://services.digg.com/1.0/endpoint?method=oauth.getAccessToken', :authorize_url => 'http://digg.com/oauth/authorize') @request_token = @consumer.get_request_token session[:request_token] = @request_token.token session[:request_token_secret] = @request_token.secret redirect_to @request_token.authorize_url Which is by-the-book in terms of what the gem documentation gave me. However, Digg spits a "400 Bad Request" error back at me when @consumer.get_request_token is called. I can't figure out what I'm doing wrong. Any ideas?

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  • What about Programmer "Invisible" registers?

    - by claws
    These are "Programmer Visible" x86-64 registers: What about the invisible registers? Just now I learned that MMU registers, Interrupt Descriptor Table (IDT) uses these invisible registers. I'm learning these things in the hard way. Is there any resource (book/documentation/etc) that gives me the complete picture at once? I am aware of the programmer visible registers and comfortable in programming with them. I just want to learn about invisible registers and their functionality. I want to get a complete picture. Where can I get this info?

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  • How can I have different colors for different tabs in SuperTabNavigator.

    - by Zeeshan Rang
    Hi Well the heading is basically what my question is: How can I have different colors for different tabs in SuperTabNavigator. Below is the code to my SuperTabNavigator with three tabs: <containers:SuperTabNavigator x="0" y="10" width="100%" height="100%" right="1" top="1" left="1" bottom="1" color="black" creationPolicy="all" id="tab_nav" popUpButtonPolicy="{SuperTabNavigator.POPUPPOLICY_OFF}"> <mx:Canvas label="My Friends" id="friends_container" width="100%" height="100%"/> <mx:Canvas label="My Groups" id="groups_container" width="100%" height="100%"/> <mx:Canvas label="Address Book" id="address_container" width="100%" height="100%"/> </containers:SuperTabNavigator> I want to have different color for every different tab. How should I do this. Thank you Zeeshan

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  • check if(country == @"(null)" doesn't work

    - by Sean
    hi all, I got the problem that the if-statement doesn't work. After the first code line the variable contains the value "(null)", because the user who picked the contact from his iphone address book doesn't set the country key for this contact, so far so good. but if I check the variable, it won't be true, but the value is certainly "(null)"... does someone have an idea? NSString *country = [NSString [the dict objectForKey:(NSString *)kABPersonAddressCountryKey]]; if(country == @"(null)") { country = @""; } thanks in advance sean

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  • ruby on rails named scope implementation

    - by Engwan
    From the book Agile Web Development With Rails class Order < ActiveRecord::Base named_scope :last_n_days, lambda { |days| {:conditions => ['updated < ?' , days] } } named_scope :checks, :conditions => {:pay_type => :check} end The statement orders = Orders.checks.last_n_days(7) will result to only one query to the database. How does rails implement this? I'm new to Ruby and I'm wondering if there's a special construct that allows this to happen. To be able to chain methods like that, the functions generated by named_scope must be returning themselves or an object than can be scoped further. But how does Ruby know that it is the last function call and that it should query the database now? I ask this because the statement above actually queries the database and not just returns an SQL statement that results from chaining.

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  • I'm having an issue with a scala script using 2.7.7 - Main$$anon$1$$anonfun$1$$anonfun$apply$2

    - by Uruhara747
    This is the code I used from a book... import scala.actors.Actor._ val countActor = actor{ loop { react{ case "how many?" = { println("I've got " + mailboxSize.toString + " messages in my mailbox.") } } } } countActor ! 1 countActor ! 2 countActor ! 3 countActor ! "how many?" countActor ! "how many?" countActor ! 4 countActor ! "how many?" The error java.lang.NoClassDefFoundError: Main$$anon$1$$anonfun$1$$anonfun$apply$2

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  • RowsDeleting event doesn't fire

    - by iTayb
    I have a gridview with a onrowdeleting="SellersGridView_RowsDeleting" switch. My method is: protected void SellersGridView_RowsDeleting(object sender, GridViewDeleteEventArgs e) { string seller = ((Label)SellersGridView.Rows[e.RowIndex].Cells[0].FindControl("TextBoxSeller")).Text; BookStore b = new BookStore(); b.LoadFromXML(Server.MapPath("list.xml")); string ISBN = Request.QueryString["ISBN"].ToString(); int ID = b.BooksList.FindIndex(x => x.ISBN == ISBN); Book myBook = b.BooksList[ID]; myBook.RemoveSeller(seller); Response.Redirect("editbook.aspx?ISBN=" + ISBN); } Well, it seems that when I try to delete anything - nothing happens. I tried to change the first line to Response.Redirect("foo") just to check if the event itself is fired, and it turns out that it doesn't. I can't get The reason. Here is my gridview control: http://pastebin.com/CKDAMECT Here is my codebehind code: http://pastebin.com/ShBtwGEu Thank you very much!

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  • Did we really always need to use Ruby/ rails plugin?

    - by Devlim
    I been intersted in ruby and rails lately but what I always encounter in blog/ podcast / book is they will always teach how to use ruby or rails plugin/ ruby instead of writing one. Did we really always need to use plugin, even thing like authorization? Authenticate? Is it really waste time Or hard to write from start? Then if it hard and waste time why rails say make web development less painful? Or I was wrong in term of concept? Goal ? Or anything else? Of rails? Anyone can guide me ?

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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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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