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• Help me validate these points regarding Ruby

  - by Bragaadeesh

  Hi, I have started learning Ruby for the past 2,3 weeks and I have come up with some findings on the language. Can someone please validate these points. Implemented in many other high level languages such as C, Java, .Net etc., Is slow for the obvious reason that it cannot beat any of the already known high level languages. Should never be compared with any other high level language. Not suitable for large applications. Completely open source and is in a budding state. Has a framework called Rails which claims that it would be good for Agile development Community out there is getting better day by day and finding help immediately should not be a problem as time goes by. Has significant changes between releases which many developers wont welcome right away. Running time cannot be comprehensively estimated since the language has several underlying implementation in several languages. Books are always outdated by the time when you finish them. Thanks.

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• from JS to iphone dev - what's the best language to start with?

  - by Enkai

  I am a total beginner and would like to eventually learn to develop for the iphone. I have just done a beginner's CS course where the language we learned was JavaScript. We studied basic concepts like: variables, arrays, loops (for,while,if,if..else..), properties and functions. I'm wondering if I am starting in the right/wrong place by following this book: Learn C on the Mac by Dave Mark? I have read a few chapters and am finding it a bit hard to get my head around the way that C works, for example the way that Strings are printed seems overly complicated as compared to JS. Do you think that JS was the wrong language to start off with and would I be better to go from JS straight to Objective-C rather than to C? I have tried to read up on previous threads on the merits/demerits of learning C first but haven't found any that relate JS to learning C/Obj C/ Cocoa. Any advice appreciated as I am very new to this. Thanks

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• Blackberry wifi connection issue

  - by AmitG

  Hi all, I have a very strange issue with my blackberry application. My application first searches for a blackberry network ( ;interface=wifi , ;deviceside=true , ;deviceside=false" + ";ConnectionUID="+ myRecord.getUid() ) transport and after finding one, it uses it to connect the server application. The issue is that some of my web services consumed by the bb client applicaton does not work when the connection type is wifi. Example: I have a series of web services called one after the other, login , x , y ,z, and logout. The connection transport selected = WIFI Login and LogOfff works fine but x, y and z web services return me an error message. The same series of web services ( Login, x,y,z, Log Out,) works with other connection transports ( eg. ap2trans) . Please help me with this issue as connecting to wifi ( if available ) is important for the application. Pleaes provide even the smallest info in this regad. thanks in advance

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• How to set ItemsSource?

  - by Mark

  This dialog makes no sense to me And I'm having trouble finding good tutorials on it. Most of the examples aren't detailed enough, or do stuff via code, but I'd like to take advantage of the IDE as much as possible. Whats the difference between ItemsSource and DataContext? I'd like to bind it to just a List for starters. I don't need SQL or databases or anything fancy. Where would I declare my list? In MainWindow.xaml.cs? How do I get it to appear in that dialog?

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• Porting Windows C++ to Standard (Linux) C++ - WSAGetLastError()

  - by Donal Rafferty

  I am currently porting some Windows mobile C++ code to standard C++. So I am trying to find alternatives for windows specific functions. I have had very little luck in finding a standard C++ function that can help me replace the WSAGetLastError() windows specific function. WSAGetLastError() returns error numbers for errors that occur with sockets in windows. So I was wondering if anyone was aware of a way to replace this function in standard c++? A way to get different error numbers for different outcomes of connecting/dissconection a socket would be sufficent.

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• What could cause a returning function to crash? C++

  - by JeanOTF

  So I have been debugging this error for hours now. I writing a program using Ogre3d relevant only because it doesn't load symbols so it doesn't let me stack trace which made finding the location of the crash even harder. So, write before I call a specific function I print out "Starting" then I call the function and immediately after I print "Stopping". Throughout the function I print out letters A-F where F is printed right before the function returns (one line above the last '}') The weird thing is when the crash occurs it is after the 'F' is printed but there is no 'Stopping'. Does this mean that the crash is happening in between somewhere? The only thing I can think of is something going wrong during the deallocation of some of the memory allocated during the function. I've never had anything happen like this, I will keep checking to make sure it's going wrong where I think it is.

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• Passing derived objects in a constructure

  - by Clarence Klopfstein

  This is a bit of a convoluted question, hopefully I can make it clear. I am finding that this may not be possible, but am trying to see if anybody has a solution. I have four classes, two are core classes and two are those core classes extended: extUser Extends coreUser extSecurity Extends coreSecurity In the constructor for coreUser you have this: public coreUser(string id, ref coreSecurity cs) When trying to extend coreUser you would have this: public extUser(string id ref extSecurity es) : base(id, ref es) This fails because es is of type, extSecurity and the base class expects a type of coreSecurity. I've not found anyway to cast this to allow for me to override this base class in C#. In VB it works just fine. Ideas?

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• postback __EVENTTARGET ID in Page.Request.Form has $ not _ in ASP.NET

  - by Industry86

  I am using the ToolkitScriptManager from the Ajax tool kit and I am having a problem finding my button's ID. My ID's on my controls come back with $ symbols instead of _ symbols, like the following: Grid$ctl06$insertButton This obviously causes problems when attempting to find the control from the Page.Request.Form keys. I cannot seem to find the determining factor that would cause this. Now, I know this is the name and in my source I see that the ID is with the _, so why is the Page.Request.Form showing up with the $ symbol instead? Anybody encounter this before?

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• Is it good practice to export variables in Perl?

  - by gvkv

  I'm finding it very convenient to pass configuration and other data that is read or calculated once but then used many times throughout a program by using Perl's use mechanism. I'm doing this by exporting a hash into the caller's namespace. For example: package Myconfiguration; my %config; sub import { my $callpkg = caller(0); my $expsym = $_[1]; configure() unless %config; *{"$callpkg\::$expsym"} = \%config; } and then in other modules: use MyConfiguration (loc_config_sym); if ( $loc_config_sym{paramater} ) { # ... do stuff ... } However, I'm not sure about this as a best practice. Is it better to add a method that returns a hash ref with the data? Something else?

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• CSS position relative (?) and z-index

  - by user318704

  Greetings good people - I need some help. I have until now buildt web-pages with floats, but now I need z-index, and therefore I need to use position The test page is here http://www.it-stud.h...hovedp/combine/ The problem being the timelines (vertical multicoloured lines on the right), and this looks and works fine in FireFox and Opera for Mac and Pc, IE8, but scary things happens in Chrome and Safari. It validates XHTML Transitional. I have position inherit on some of the elements, but I have problems finding a solution. Any help would be greatly appreciated, as I am out to sea on this one. All the best -

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• Population count of rightmost n integers

  - by Jason Baker

  I'm implementing Bagwell's Ideal Hash Trie in Haskell. To find an element in a sub-trie, he says to do the following: Finding the arc for a symbol s, requires ?nding its corresponding bit in the bit map and then counting the one bits below it in the map to compute an index into the ordered sub-trie. What is the best way to do this? It sounds like the most straightforward way of doing this is to select the bits below that bit and do a population count on the resulting number. Is there a faster or better way to do this?

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• @Stateless, @Remote and @Local

  - by Jeff Foster

  In my deployment on JBoss 5.1.0GA with JavaEE-5 I have beans of the general form public interface Foo { void baz (); } @Stateless public class FooBean implements Foo { void baz() { // ... } } I have assumed that this is the same as if I have explicitly annotated the Foo interface with @Local. From seeing a stack trace in the code I think that it is actually using a remote interface, whereas I want all of my beans to be local. Do I need to explicitly annotate interfaces as Local or is there some default? Finding documentation on this is proving challenging so any links to relevant documentation would be greatly appreciated.

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• More intelligent Context Menus in Visual Studio 2008 Database Projects

  - by Mike C.

  I'm using a SQL Server 2008 Database Project, and I'm finding it's very cumbersome to add certain items. For example, if I right click on Tables = Keys and navigate to the Add item, I'd expect to see the different kinds of keys that I can add. Instead, I see the stock items that don't apply, and I'm forced to navigate the Add New Item screen to find Primary Key. Is there a way to make this more efficient? I have Resharper; can I leverage templates somehow (kind of a noob with these). Thanks!

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• Sharepoint 2010 Calendar Event Receiver

  - by user521682

  I have been tasked with creating a calendar in a root site that get's updated from child site calendar events. I am able to access the Calendar List from the parent site in the child site's to add an event. However, I'm having trouble finding a way to create a uniqueIdentifier for the event so that when the child calendar's event is updated or deleted, the parent site calendar get's updated as well. The ListItem ID field appears to be only unique among the site. I did find a UniqueItemId field, but apparantly it's read-only in the SP LIstitem object. Can someone please give me some guidance here? Many thanks!

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• Replace special characters in python

  - by Marcos Placona

  Hi, I have some text coming from the web as such: £6.49 Obviously I would like this to be displayed as: £6.49 I have tried the following so far: s = url['title'] s = s.encode('utf8') s = s.replace(u'Â','') And a few variants on this (after finding it on this very same forum) But still no luck as I keep getting: UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 100: ordinal not in range(128) Could anyone help me getting this right? UPDATE: Adding the reppr examples and content type u'Star Trek XI &#xA3;3.99' u'Oscar Winners Best Pictures Box Set \xc2\xa36.49' Content-Type: text/html; charset=utf-8 Thanks in advance

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• DomDocument::loadHTML() error during phpunit test execution

  - by ranhan

  I am currently trying to write some unit test against my zend framework controller. When I run the following code I receive this error: public function testListActionShouldContainListTable() { $this->loginToSystem(); $uri = $this->_uriBase . 'campaign/list'; $_SERVER["REQUEST_URI"] = $uri; $this->dispatch('/campaign/list'); $this->assertController('campaign'); $this->assertAction('list'); $this->assertQueryCount('#list',1); } CampaignControllerTests::testListActionShouldContainListTable DOMDocument::loadHTML(): ID alrt already defined in Entity, line: 36 This occurs using any of the assertQuery and assertQueryContains methods. I have searched around but am not really finding a good answer to why it won't allow me to find this html node or how to get around this error. Thanks in advance for any help!

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• solution for different tab bars in other screen

  - by haicnpmk44

  Hi Guys I am finding the solution for my application. I create an iphone application have 3 screen: First screen not contain any tab bar. Second screen have 2 tab bar item. Third screen have 3 tab bar item. http://c.upanh.com/upload/7/719/L50.11932623_1_1.jpg If i create a UITabBarController - the tab bar will be appeared from first screen. So I have to hide tab bar in first screen. But second and third screen have different tab bar - not good idea. Do you have solution for this issue, please help me. Thank you !!!

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• MVC Display Template for Generic Type

  - by Kyle

  I am trying to use the model ListModel as a generic list model. I would like to enter on the page @Html.DisplayForModel() However the MVC is not correctly finding the templated file "ListModel.cshtml". It must work differently for generic models. What should I name the templated file in order for it to correctly be located? public class ListModel<T> { public IEnumerable<T> Models {get;set;} public string NextPage {get;set;} } I would expect it to look for "Shared/DisplayTemplates/ListModel.ascx" but it doesn't. Does anyone know?

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• How can I find all the trunks from several different Subversion servers?

  - by SylanderXS

  We have many SVN Repo's but many of them have nested projects. I need some way of finding the trunk directories only and creating a list of them. So, the svn path to trunk might be svn://svnserver/repos/myproject/trunk or it might be svn://svnserver/repos/myproject/mysubproject/trunk I need to generate a list of /trunk directories from several different servers. Is there a method for doing that? Has anyone seen a script (sh, perl, whatever) for doing something similar? I just need a hint on how to get started.

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• Javascript How do I force a string + variable to be evaluated as a variable

  - by Craig Rinde

  Im not even sure how to word this and is probably why I am having trouble finding an answer in google. When the code is run currentCardRow will equal 1 therefore it should be cardSelected1 which is what is shown in the console.log. I need it to go a step further because cardSelected1 is a variable and I need it to evaluate show in the console log as Invitation. Invitation is an example of a variable for cardSelected1. I am not sure on what the correct syntax is to make this happen. var currentCardSelected = "cardSelected" + currentCardRow; Thanks for your help!

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• Configure VS 2010 Help for a specific subject

  - by scope-creep

  Using VS2008, u could set Document Explorer to limit your search to specific subjects using the Technology dropdown, which made for finding info on a specific subject very easy, as it was limited to a subset of available subject. How is the accomplished in the new VS2010 help? The VS2010 help at the moment, is very hazy. When I search for Task, or task, or c# task. re the new Task library in .net, it returns a whole bundle of irrelevancy... Any ideas.

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• [FLEX] MVC: choosing a view at runtime

  - by Alberto M

  Hi all, I'm quite new to the MVC design-pattern, and I'm translating all of my old code. I want to move to this pattern because I can change my views according to my needs, but I'm finding difficult to do it at runtime. I found an excellent example of MVC, and all that I do is the following: <mx:ViewStack xmlns:mx="http://www.adobe.com/2006/mxml" resizeToContent="true" xmlns:views="MVC.views.*"> <views:HomeView id="Home"/> <views:SecondPage id="SecondPage "/> </mx:ViewStack> what if I wanted to change (whenever the Controller says so) one of the views, for example the SecondPage view? (Hope I made my point clear)

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• Can I include a view in Kohana 3 that is not within `application/views`?

  - by alex

  I am building a staff area for a website, which is completely different to the main brochure style site. I have 2 Kohana systems setup. I realise they can both share the same system and modules folder. Now, with the second one, I want to make the main template view a view in a different folder. I tried this in my base controller $this->template = DOCROOT . '../~new2/application/views/template.php'; But Kohana is looking for it in its own views folder as evident by the error I received. I even put a var_dump(file_exists($this->template)); // true to be sure it was finding the correct file. Is there a way to add a template file that is not within the views folder, without hacking the core Kohana code (and if I'm lucky not extending and overloading the view class).

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• c++ Mixing printf, cout with wprintf, wcout

  - by Bo Jensen

  I know you should not mix printing with printf,cout and wprintf,wcout, but have a hard time finding a good answer why and if it is possible to get round it. The problem is I use a external library that prints with printf and my own uses wcout. If I do a simple example it works fine, but from my full application it simply does not print the printf statements. If this is really a limitation, then there would be many libraries out there which can not work together with wide printing applications. Any insight on this is more than welcome.

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• How can I measure distance with tastypie and geodjango?

  - by Twitch

  Using Tastypie and GeoDjango, I'm trying to return results of buildings located within 1 mile of a point. The TastyPie documentation states that distance lookups are not yet supported, but I am finding examples of people getting it work, such as this discussion and this discussion on StackOverflow, but no working code examples that can be applied. The idea that I am trying to work with is if I append a GET command to the end of a URL, then nearby locations are returned, for example: http://website.com/api/?format=json&building_point__distance_lte=[{"type": "Point", "coordinates": [153.09537, -27.52618]},{"type": "D", "m" : 1}] But when I try that, all I get back is: {"error": "Invalid resource lookup data provided (mismatched type)."} I've been pouring over the Tastypie document for days now and just can't figure out how to implement this. I'd provide more examples, but I know they'd be all terrible. All advice is appreciated, thank you!

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