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  • Simple question - XSB Prolog

    - by KP65
    Hello! I'm diving into the world of prolog headfirst but I seem to have hit shallow water! I'm looking at database manipulation in prolog with regards to this tutorial:Learn Prolog Now! It states that I can see my database by entering listing So i tried it and it should basically output everything in my .P file(facts, rules), but this is what i get, here are my sequence of commands: ? consult('D:\Prolog\testfile.P'). [testfile.P loaded] ? listing. library_directory(C:blahblahpathtoXSB) library_directory(C:blahblahXSBpath) {this is listed around 5 times)} shouldn't this command display what is in testfile.P, according to the tutorial? also, after consult testfile.P i should be ableto use assert to add more facts but it doesnt actually change anything in the testfile.P..? any ideas

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  • Missing Menu Bar in Visual Studio 2010

    - by Jeremy Sullivan
    When I opened up Visual Studio 2010 this morning, my Menu Bar (you know, the bar with File, Edit, etc. on it) was missing. I've tried all of the right-click menus, customize options, Function keys and Google searches that I can think of but to no avail. This is exactly the kind of humiliation that brings sobriety to my ever-growing ego as a developer. I'm actually posting this on StackOverflow.com for the world to see. Next, I will be just as humiliated when someone replies to this and tells me precisely how simple it is and how ignorant that I am for not knowing the simple key combination or finding it on Google. Thank you, your majesty, for your sharp retort in advance.

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  • Why is there no IronPerl (Perl for .Net)?

    - by Renaud Bompuis
    I'm a bit disappointed that there doesn't seem to be any effort to make Perl a first-class citizen of the .Net world. I've read a few 'reasons' in the past but I don't see why they can't be overcome (different garbage collectors, hard-to-parse syntax, part of CPAN modules couldn't be ported, different communities, ...). Activestate has a Perl.Net product but it's a hack (in the good sense) around a standard interpreter and some syntactic sugar to interoperate with .Net assemblies. A few years ago they stopped they visual studio integration of Perl citing lack of interest. That was a while ago, before all the changes to .Net to make it more 'dynamic'. Am I the only one who yearns for IronPerl?

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  • jquery ui tabs major style change

    - by Jonah
    I am using jquery UI tabs and I need to majorly change the styling on it. I need to rempve the background image, the borders, almost everything. I need it to look minimal, and not like it's self contained. What's the best way to do this? I need to use the default UI styling for the calendar widget however, which is on the same page. I've done a lot of research and everyone seems to point to the theme-roller. However, i do not just want to change the colors and border radii. I need to delete crap. theme-roller seems to be just change things like colors (not really useful for the real world) Is it even worth using jquery UI for my tabs?

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  • Symfony include_component() with components from a plugin

    - by Chris T
    All I'd like to do is use include_component to call a component from a plugin that I'm developing <?php #/plugins/fooPlugin/modules/barModule/actions/components.class.php class barModuleComponents extends sfComponents{ /** * Constructor */ function __construct(){ } function executeHello(){ } } ?> and <!-- /plugins/fooPlugin/modules/barModule/templates/_hello.php --> <p>HELLO WORLD!</p> But it won't load if I do this in #/apps/frontend/modules/homepage/templates/indexSuccess.php <?php include_component("barModule", "hello"); ?> XDebug gives me: ( ! ) Fatal error: Call to a member function add() on a non-object in C:\Program Files\WaterProof\PHPEdit\3.6.2\Extensions\Symfony\distribution\1.4\lib\helper\PartialHelper.php on line 360

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  • Compute bounding quad of a sphere with vertex shader

    - by Ben Jones
    I'm trying to implement an algorithm from a graphics paper and part of the algorithm is rendering spheres of known radius to a buffer. They say that they render the spheres by computing the location and size in a vertex shader and then doing appropriate shading in a fragment shader. Any guesses as to how they actually did this? The position and radius are known in world coordinates and the projection is perspective. Does that mean that the sphere will be projected as a circle? Thanks!

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  • WPF Animation on scrollviewer children clipped by scrollviewer

    - by Becky Franklin
    Hey folks, I'm hoping I have a fairly simple problem that can be fixed easily as it seems like I'm just missing something basic from the WPF world. I have a scrollviewer wrapping a stackpanel which contains several images, these images have animations to increasing in size when the mouse passes over them. All works fine without the scrollviewer, now I've added the scrollviewer, the animation works but only inside the scrollviewer; the increasing size isn't being allowed to overlap the scrollviewer. Is there a way to fix this? Thanks, Becky

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  • FluentNHibernate SQL Server 2005/2008 Setup Tutorial

    - by Abe
    Hello! Does anybody know of any good tutorials that show how to configure FluentNhibernate for SQL Server 2005/2008. The ones I have found usually just use SQLite, but I would like to see one that specifically targets SQL Server 2005/2008. I really liked the sample tutorial on the FluentNhibernate website (http://wiki.fluentnhibernate.org/Getting_started#Your_first_project), but it looks like most tutorials I have found seem to only deal with SQLite. It would be great to see a working tutorial that deals with the more common databases in real world applications like SQL Server 2005/2008, MySQL, etc Thanks!

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  • Access violation after GetInterface/QueryInterface in Delphi

    - by W55tKQbuRu28Q4xv
    Hi everyone! First, I'm very new in Delphi and COM, but I should build COM application in Delphi. I read a lot of articles and notes on the internets, but COM and COM in Delphi are still not clear to me. My sources - http://www.everfall.com/paste/id.php?wisdn8hyhzkt (about 80 lines). I try to make a COM Interface and Impl class - it works if I call an interface method from Delphi (I create an impl object via TestClient.Create), but if I try to create an object from outer world (from Java, via com4j) my application crashed with following exception: Project Kernel.exe raised exception class $C0000005 with message 'access violation at 0x00000002: read of address 0x00000002'. If I set a breakpoint in QueryInterface - it breaks, but when I come out from function - all crashes. What I'm doing wrong? What I still missing? What I can/should read about COM (in Delphi) to avoid dumb questions like this?

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  • How can we calculate sea distances using waypoints ?

    - by Ashish Ranpara
    Hi Friends, I have one query in which I really stuck at that. I have port database with waypoints and also routing points which I need to use in distance calculation between two ports. I have done lots of R&D to find formula which gives me distance between two points. I also need shortest route which is possible. I have reviewed online tools which allow user to calculate the distance. But I want to do the same at my own. I have reviewed Port World Distance Calculator. I reviewed the Great Circle formula to achieve that but I don't know that how we avoid landscapes in sea distance and in which direction I need to find distance for second port.

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  • Most popular classroom, bootcamp, or online training for ASP.NET 3.5

    - by Curtis White
    What are the most popular and highest quality training sources for ASP.NET 3.5. I am interested in both "boot camp" class room training and online self-paced training. I am interested in both training that can be applied to certification but also non certification based training in the following areas: ASP.NET 3.5, AJAX, and web security. The training should be geared to real world projects and not memorization. I am most interested to hear from Microsoft MVP's on the matter and those who personally have attended or scheduled such training.

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  • Is DataGrid a necessity in WPF?

    - by Jobi Joy
    I have seen a lot of discussions going on and people asking about DataGrid for WPF and complaining about Microsoft for not having one with their WPF framework till date. We know that WPF is a great UI technology and have the Concept of ItemsControl,DataTemplate, etc,etc to make great UX. Even WPF has got a more closely matching control- ListView, which can be easily templated to give better UX than a traditional Datagrid like display. And I would say a readymade DataGrid control will kill or hide a lot of creativity and it surely will decrease the innovations in User Experience field. So what is your opinion about the need of DataGrid in WPF as a Framework component? If you feel it is necessary then is it just because the world is so used to the DatGrid way of data display for many years? Some other threads having the discussion about DatGrid are here and here Link to WPF ToolKit - Latest WPF DatGrid

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  • PHP regex to match sentences that contain a year

    - by zen
    I need a regular expression that will extract sentences from text that contain a year in them. Example text: Next, in 1988 the Bradys were back again for a holiday celebration, "A Very Brady Christmas". Susan Olsen (Cindy) would be missing from this reunion, Jennifer Runyon took her place. This was a two hour movie in which the Bradys got together to celebrate Christmas, introducing the world to the spouses and children of the Brady kids. This movie was the highest rated TV-movie of 1988. If the example text was variable $string, I need it to return: $sentenceWithYear[0] = Next, in 1988 the Bradys were back again for a holiday celebration, "A Very Brady Christmas". $sentenceWithYear[1] = This movie was the highest rated TV-movie of 1988. If it's possible to retain the year via regex, I'd use the year within the sentence and eventually insert the sentences into a database like: INSERT INTO table_name (year, sentence) VALUES ('$year', '$sentenceWithYear[x]')

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  • Java library for HTML analysis

    - by Raj
    Hi, (I've seen similar questions, but I think none of them cater to my specific needs, hence...) I would like to know if there is a Java library for analysis of real-world (read: incomplete, ill-formed) HTML. By analysis, I mean things like: figuring out the most prominent color in an HTML chunk changing that color to some other color (hence, has to support modification of the HTML as well) pruning out unwanted tags fixing up the HTML to result in a well formed HTML snippet Parts of the last two are done by libraries such as Jericho, and jTidy. 'Plugins' on top of these would be great. Thanks in advance!

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  • How is GroupOn website programmed?

    - by Maxi Garcia
    Hello world! This is my first time on Stackoverflow.com and it's great to be here! I need some expert programmer out there to tell me how the GroupOn's platform operates, from the programming point of view. Which are the most complex features it has and what technology do they use? If I were about to start learning programming languages, what should I learn to create a site like GroupOn.com? Is there any website where I can learn the basic principles for free? I appreciate your advices. Thanks in advance!

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  • netlogo programming question - catalyst implementation part 2

    - by user286190
    hi the catalyst speeds up the reaction but remains unchanged after the reaction has taken place i tried the following code breed [catalysts catalyst] breed [chemical-x chemical-x] ;then the forward reaction is sped up by the existence of catalysts to react-forward let num-catalysts count catalysts ;speed up by num-catalysts ;... end and it works fine but I want to make it so that the catalyst can be switched on and off with the 'switch' button ..so one can see the effects with and without the catalyst..i tried putting a switch in but catalyst has already been defined Also i want to make the catalyst visible so one can see it in the actual implementation (in the world) like making it a turtle is there are another way to implement this apart from using breeds i tried making the catalyst a turtle but it doesnt work ; Make catalyst visible in implementation clear-all crt catalysts 100 ask catalysts [ set color white ] show [breed] of one-of catalysts ; prints catalysts any help will be greatly appreciated thank you

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  • Insert a Script into a iFrame's Header, without clearing out the body of the iFrame

    - by nobosh
    Hello, I'm looking to add a script to an iFrame's header while not losing everything contained in the iFrame's body or header... here is what I have right now which does update the iFrame with the new script, but it cleans everything in the iframe out, not appends which is what I'd like. thxs! B // Find the iFrame var iframe = document.getElementById('hi-world'); // create a string to use as a new document object var val = '<scr' + 'ipt type="text/javascript" src="http://jqueryjs.googlecode.com/files/jquery-1.3.2.min.js"></scr' + 'ipt>'; // get a handle on the <iframe>d document (in a cross-browser way) var doc = iframe.contentWindow || iframe.contentDocument; if (doc.document) { doc = doc.document;} // open, write content to, and close the document doc.open(); doc.write(val); doc.close();

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  • Static/Dynamic vs Strong/Weak

    - by Dan Revell
    I see these terms banded around all over the place in programming and I have a vague notion of what they mean. A search shows me that such things have been asked all over stack overflow in fact. As far as I'm aware Static/Dynamic typing in languages is subtly different to Strong/Weak typing but what that difference is eludes me. Different sources seem to use different different meanings or even use the terms interchangeably. I can't find somewhere that talks about both and actually spells out the difference. What would be nice is if someone could please spell this out clearly here for me and the rest of the world.

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  • F# performance in scientific computing

    - by aaa
    hello. I am curious as to how F# performance compares to C++ performance? I asked a similar question with regards to Java, and the impression I got was that Java is not suitable for heavy numbercrunching. I have read that F# is supposed to be more scalable and more performant, but how is this real-world performance compares to C++? specific questions about current implementation are: How well does it do floating-point? Does it allow vector instructions how friendly is it towards optimizing compilers? How big a memory foot print does it have? Does it allow fine-grained control over memory locality? does it have capacity for distributed memory processors, for example Cray? what features does it have that may be of interest to computational science where heavy number processing is involved? Are there actual scientific computing implementations that use it? Thanks

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  • I'm going to write 'Unit of Work', please help me find out all gimmicks

    - by o..o
    Hi everybody, I'm going to write my own DAL in C#. I decided to use 'Unit of Work' pattern (next mentioned as uow) with request as a scope and Identity map stored in HttpContext.Items. I have right now question about implementing of CRUD methods. How/where are they implemented? Are they implemented in every single business class (as in active records pattern) or are implemented somehow in uow class (if so, how)? I also suppose that I need to use as the scope not just the request, but also the db connection. But how? Should I open the connection a the start of the request and close it on uow disposing? Every advice is strongly appreciated, especially Your "real world" experiences. Thank you all :)

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  • ASP.NET MVC View Engine Comparison

    - by McKAMEY
    EDIT: added a community wiki to begin capturing people's experience with various View Engines. Please respectfully add any experiences you've had. I've been searching on SO & Google for a breakdown of the various View Engines available for ASP.NET MVC, but haven't found much more than simple high-level descriptions of what a view engine is. I'm not necessarily looking for "best" or "fastest" but rather some real world comparisons of advantages / disadvantages of the major players (e.g. the default WebFormViewEngine, MvcContrib View Engines, etc.) for various situations. I think this would be really helpful in determining if switching from the default engine would be advantageous for a given project or development group. Has anyone encountered such a comparison?

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  • Code Access Security - Basics and Example

    - by jobless-spt
    I was going through this link to understand CodeAccessSecurity: http://www.codeproject.com/KB/security/UB_CAS_NET.aspx It's a great article but it left me with following questions: If you can demand and get whatever permissions you want, then any executable can get Full_Trust on machine. If permissions are already there, then why do we need to demand those? Code is executing on Server, so the permissions are on server not on client machine? Article takes an example of removing write permissions from an assembly to show security exception. Though in real world, System.IO assembly (or related classes) will take care of these permissions. So is there a real scenario where we will need CAS?

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  • .NET Code Access Security: Useful or just overcomplicated?

    - by routeNpingme
    see also Is “Code Access Security” of any real world use? I want to get some other opinions on this... I like the idea of Code Access Security for desktop applications. But in the lifetime of .NET I have to admit I've never actually had a situation where CAS has actually blocked something to my benefit. I have, however, had many times where something as simple as sharing a quick .NET application across a mapped drive becomes an enterprise code access nightmare. Having to break out caspol.exe to create trusted path rules and having no clear way of knowing why something failed makes it seem like CAS adds way more frustration to the development and deployment process than it offers in security. I'd like to hear either some situations where CAS has actually helped more than hurt, or if there are other people out there frustrated with its current implementation and defaults.

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  • What is the easiest way to have a local LAMP installation for web development on mac OS X ?

    - by pixeline
    I'm new to mac os x. In the Windows XP world, there are packages available, like easyPHP, wampserver, uniformserver, that enable you to have a local webserver complete with php, mysql configured via an automatic installer. Really handy. I need the same on my new mac. I know mac os x comes with a local webserver. Is this already with php, mysql preinstalled? I'd like to have you guys advise on the easiest way to have this local lamp so that i can continue developing on this nice and shiny machine. thanks!

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  • Practical guide to programming paradigms ?

    - by Pierre
    I think I might be misunderstanding the whole thing and I am looking for some programming wisdom. When faced with a programming challenge, I feel the most important question is "which programming paradigm(s) are better suited to handle it, and how to apply them". A distant second is "which language to use". Yet it seems that most of the programming related content I stumble upon on the Internet has it exactly backwards and focuses mostly on the language choice. An object-oriented solution is fundamentaly the same, whether it's implemented in c++, Java or PHP... So where is the paradigm centered content? Where is the "practical guide to programming paradigms and implementations" and other literature helping bringing real-world and programming concepts together? Note: I already know about "Programming Paradigms for Dummies: What Every Programmer Should Know" from Peter Van Roy.

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