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  • .net 4.0 concurrent queue dictionary

    - by freddy smith
    I would like to use the new concurrent collections in .NET 4.0 to solve the following problem. The basic data structure I want to have is a producer consumer queue, there will be a single consumer and multiple producers. There are items of type A,B,C,D,E that will be added to this queue. Items of type A,B,C are added to the queue in the normal manner and processed in order. However items of type D or E can only exist in the queue zero or once. If one of these is to be added and there already exists another of the same type that has not yet been processed then this should update that other one in-place in the queue. The queue position would not change (i.e. would not go to the back of the queue) after the update. Which .NET 4.0 classes would be best for this?

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  • concurrency in Java

    - by p1
    1]What is Non-blocking Concurrency and how is it different. 2] I have heard that this is available in Java. Are there any particular scenarios we should use this feature 3] Is there a difference/advantage of using one of these methods for a collection. What are the trade offs class List { private final ArrayList<String> list = new ArrayList<String>(); void add(String newValue) { synchronized (list) { list.add(newValue); } } } OR private final ArrayList<String> list = Collections.synchronizedMap(); The questions are more from a learning/understanding point of view. Thanks for attention.

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  • NSMutable String "Out of scope"

    - by Garry
    I have two NSMutableString objects defined in my viewController's (a subclass of UITableViewController) .h file: NSMutableString *firstName; NSMutableString *lastName; They are properties: @property (nonatomic, retain) NSMutableString *firstName; @property (nonatomic, retain) NSMutableString *lastName; I synthesis them in the .m file. In my viewDidLoad method - I set them to be blank strings: firstName = [NSMutableString stringWithString:@""]; lastName = [NSMutableString stringWithString:@""]; firstName and lastName can be altered by the user. In my cellForRowAtIndexPath method, I'm trying to display the contents of these strings: cell.detailTextLabel.text = [NSString stringWithFormat:@"%@ %@", firstName, lastName]; but this is causing the app to crash as soon as the view controller is displayed. Using the debugger, it seems that both firstName and lastName are "out of scope" or that they don't exist. I'm new to Xcode but the debugger seems to halt at objc_msgSend. What am I doing wrong?

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  • Get Hardware Information for HWs that is not installed

    - by Isaac
    I am pretty sure how to retrieve hardware information with WMI classes. but WMIs have a big limitation: They Just can get information for installed hardwares. I need to retrieve information about CPU (model,speed,etc..),Video Card, Sound Card, USB Ports, etc. I found a really good software (HWiNFO) that can do this even the drivers for hardware parts is not installed. It seems that HWiNFO uses a internal database to give a name for each hardware part. So is there any free library/DLL/component that can do this in Windows XP or higher Note: Although HWiNFO SDK seems good, it's not free. So it doesn't exist! ;) I need a free library.

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  • Document: How do I include a random fragment from another document

    - by NXT
    I have a word document that I am converting to docbook. This word document has short sections that are quoted from another document. I thinking that I should use a blockquote or sidebar to contain the quoted document. But how do I go about making random headings in non sequential order? For example I might be quoting a section of a document that looks like this: -------------------------------------- B. Damage Assessment blah...paragraphs B.1 Responsibilities. some stuff... B.2 Authority some more stuff... -------------------------------------- Those headings are totally unrelated to the flow of the containing document. Is this an appropriate place to use the bridgehead element?

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  • Editing Div Text At Click Position

    - by sonofdelphi
    I have a DIV which contains some text. When a user clicks on some content in the DIV, I want to enable him to edit the content at that position. <div id='Note'> Lorem ipsum dolor sit amet, consectetur adipisicing elit, <br /> sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. <br /> Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip <br /> ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse <br /> cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, <br /> sunt in culpa qui officia deserunt mollit anim id est laborum.<br /> </div>

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  • Should you remove all warnings in your Verilog or VHDL design? Wh or why not?

    - by Brian Carlton
    In (regular) software I have worked at companies where the gcc option -Wall is used to show all warnings. Then they need to be dealt with. With non-trivial FPGA/ASIC design in Verilog or VHDL there are often many many warnings. Should I worry about all of them? Do you have any specific techniques to suggest? My flow is mainly for FPGAs (Altera and Xilinx in particular), but I assume the same rules would apply to ASIC design, possibly more so due to the inability to change the design after it is built.

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  • How do I move a Java JFrame partially off my Linux desktop?

    - by Erick Robertson
    I'm writing a Java application with movable frames, and I've come across a quirk in Linux. I'm running GNOME 2.16.0 under CentOS. When I use JFrame.setBounds to set the bounds to any location that's half off the screen, it actually sets the location of the frame to be as close as possible to the bounds specified while still staying completely on the screen. This is confusing because other non-Java windows can move half off the screen. How do I tell Java to tell GNOME to actually put the frame where I specify, even if that's half off the screen?

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  • CMS for news editing

    - by Genrih
    It is necessary to convert the site into CMS. One of the main features - edit the articles of some type, and to do so will be non-programmers, that is, the simpler the better. Ideally - no editor like ckeditor, but simply wizard, where its possible to insert images, text, title text, and it's all displayed in the page default template. Wizard can be implemented by me, let it be just not very difficult to change the default editor. Also multilanguage support is required. What can you advise?

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  • Agile and code release

    - by ring bearer
    Do you know of any agile process that is created for code releases? One of the main theme of agile is frequent releases and each company/client would have their own test/approval processes that control code releases. Most of the time these slow down the pace of "frequent releases" Currently we have a proprietary tool based workflow. The team who needs a code promotion needs to create a promotion request to one of the final UAT servers. Once this is complete, and once tests are done, certain customers, technical/non-technical managers need to approve, then it goes in to production deploy stage. Meanwhile no sprint planning meeting or anything of that sort. What is the code release process (Which is agile) that has worked for you?

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  • How to make XmlnsDefinition work on the local assembly?

    - by Scott Bilas
    I've started using the XmlnsDefinition attribute to tie together some CLR namespaces into a single xmlns for convenience in XAML. Unfortunately, it seems that this only works when using foreign assemblies. If I have a XAML file in the same assembly as the types that are in the namespace I'm referencing from XmlnsDefinition, then it says the type does not exist in the xmlns I am defining. Moving the type to a foreign assembly fixes the problem. Is there a way to use XmlnsDefinition on an assembly and have it be used from within that assembly via XAML?

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  • rails arguments to after_save observer

    - by ash34
    Hi, I want users to enter a comma-delimited list of logins on the form, to be notified by email when a new comment/post is created. I don't want to store this list in the database so I would use a form_tag_helper 'text_area_tag' instead of a form helper text_field. I have an 'after_save' observer which should send an email when the comment/post is created. As far as I am aware, the after_save event only takes the model object as the argument, so how do I pass this non model backed list of logins to the observer to be passed on to the Mailer method that uses them in the cc list. thanks

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  • Spring/Hibernate/Junit example of testing DAO against HSQLDB

    - by Ryan P.
    Hi guys, I'm working on trying to implement a JUnit test to check the functionality of a DAO. (The DAO will create/read a basic object/table relationship in HSQLDB). The trouble I'm having is the persistence of the DAO (for the non-test code) is being completed through an in-house solution using Spring/Hibernate, which eliminates the usual *.hbm.xml templates that most examples I have found contain. Beacuse of this, I'm having some trouble understanding how to setup a JUnit test to implement the DAO to create/read (just very basic funtionality) to an in-memory HSQLDB. I have found a few examples, but the usage of the in-house persistence means I can't extend some of the classes the examples show (I can't seem to get the application-context.xml setup properly). Can anyone suggest any projects/examples I could take a look at (or any documentation) to further my understanding of the best way to implement this test functionality? I feel like this should be really simple, but I keep running into problems implementing the examples I have found. Thanks in advance!

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  • How do I git reset --hard HEAD on Mercurial?

    - by obvio171
    I'm a Git user trying to use Mercurial. Here's what happened: I did a hg backout on a changeset I wanted to revert. That created a new head, so hg instructed me to merge (back to "default", I assume). After the merge, it told me I still had to commit. Then I noticed something I did wrong when resolving a conflict in the merge, and decided I wanted to have everything as before the hg backout, that is, I want this uncommited merge to go away. On Git this uncommited stuff would be in the index and I'd just do a git reset --hard HEAD to wipe it out but, from what I've read, the index doesn't exist on Mercurial. So how do I back out from this?

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  • 10035 error on a blocking socket

    - by Andrew
    Does anyone have any idea what could cause a 10035 error (EWOULDBLOCK) when reading on a blocking socket with a timeout? This is under Windows XP using the .NET framework version 3.5 socket library. I've never managed to get this myself, but one of my colleagues is getting it all the time. He's sending reasonably large amounts of data to a much slower device and then waiting for a response, which often gives a 10035 error. I'm wondering if there could be issues with TCP buffers filling up, but in that case I would expect the read to wait or timeount. The socket is definitely blocking, not non-blocking.

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  • C# Reset a property

    - by Jeff
    I'm writing a Clone function for a non serializeable object.For most objects I don't care if they are shallow copied as I won't be making any changes to them. I start with a MemberwiseClone and this copies all the values and few objects like configuration dictionary over just fine but they are pointers. EAVEntity newClone = (EAVEntity) this.MemberwiseClone(); newClone.EntityStorageID = Guid.NewGuid(); newClone.Controls.Clear(); So how do I reset a pointer so I can make them not point at the same location?

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  • Using makecert for Development SSL

    - by John
    Here's my situation: I'm trying to create a SSL certificate that will be installed on all developer's machine's, along with two internal servers (everything is non-production). What do I need to do to create a certificate that can be installed in all of these places? Right now I've got something along these lines, using the makecert application in Microsoft Visual Studio 8\SDK\v2.0\Bin: makecert -r -pe -n "CN=MySite.com Dev" -b 01/01/2000 -e 01/01/2033 -eku 1.3.6.1.5.5.7.3.1 -ss Root -sr localMachine -sky exchange -sp "Microsoft RSA SChannel Cryptographic Provider" -sy 12 mycert.cer However, I'm not sure as to how to place this .cer file on the other computers, and when I install it on my local machine IIS, everytime I visit a page via https:, I get the security prompt (even after I've installed the certificate). Has anyone done this before?

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  • Problems in php coding

    - by anwar
    Hi there everyone im new to PHP and Joomla and I have developed a component in Joomla but my code is giving me errors. I have tried to solve the problem but I’am unable to solve it. So can anyone suggest me what is the problem with my code? Thanks in advance. Here are my two files: 1st view.html.php defined('_JEXEC') or die('=;)'); jimport('joomla.application.component.view'); class namnamViewlistrestaurant extends JView { function display($tpl = null) { $item = 'item'; RestUser::RestrictDirectAccess(); //-- Custom css JHTML::stylesheet( 'style.css', 'components/com_namnam/assets/css/' ); $cuisine=Lookups::getLookup('cuisine'); $lists['cuisine'] = JHTML::_('select.genericlist', $cuisine, 'idcuisine[]', 'class="inputbox" size="7"', 'value', 'text', $item->idcuisine); $category=Lookups::getLookup('restcategory'); $lists['category'] = JHTML::_('select.genericlist', $category, 'idcategory[]', 'class="inputbox" multiple="multiple" size="7"', 'value', 'text', $item->idcategory); $items = & $this->get('Data'); $pagination =& $this->get('Pagination'); $lists = & $this->get('List'); $this->assignRef('items', $items); $this->assignRef('pagination', $pagination); $this->assignRef('lists', $lists); parent::display($tpl); }//function }//class And 2nd is listrestaurant.php defined('_JEXEC') or die('=;)'); jimport('joomla.application.component.model'); class namnamModellistrestaurant extends JModel { var $_data; var $_total = null; var $_pagination = null; function __construct() { parent::__construct(); global $mainframe, $option; $limit = $mainframe->getUserStateFromRequest( 'global.list.limit', 'limit', $mainframe->getCfg('list_limit'), 'int' ); $limitstart = $mainframe->getUserStateFromRequest( $option.'.limitstart', 'limitstart', 0, 'int' ); $limitstart = ($limit != 0 ? (floor($limitstart / $limit) * $limit) : 0); $this->setState('limit', $limit); $this->setState('limitstart', $limitstart); } function _buildQuery() { $where = array(); $where[]=" idowner=".RestUser::getUserID()." "; if ($this->search) { $where[] = 'LOWER(name) LIKE \''. $this->search. '\''; } $where =( count($where) ) ? ' WHERE ' . implode( ' AND ', $where ) : ''; $orderby = ''; #_ECR_MAT_FILTER_MODEL1_ if (($this->filter_order) && ($this->filter_order_Dir)) { $orderby = ' ORDER BY '. $this->filter_order .' '. $this->filter_order_Dir; } $this->_query = ' SELECT *' . ' FROM #__namnam_restaurants ' . $where . $orderby ; return $this->_query; } function getData() { if (empty($this->_data)) { $query = $this->_buildQuery(); $this->_data = $this->_getList($query, $this->getState('limitstart'), $this->getState('limit')); } return $this->_data; } function getList() { // table ordering $lists['order_Dir'] = $this->filter_order_Dir; $lists['order'] = $this->filter_order; // search filter $lists['search']= $this->search; return $lists; } function getTotal() { // Load the content if it doesn't already exist if (empty($this->_total)) { $query = $this->_buildQuery(); $this->_total = $this->_getListCount($query); } return $this->_total; } function getPagination() { // Load the content if it doesn't already exist if (empty($this->_pagination)) { jimport('joomla.html.pagination'); $this->_pagination = new JPagination($this->getTotal(), $this->getState('limitstart'), $this->getState('limit') ); } return $this->_pagination; } }//class And the errors are: Notice: Trying to get property of non-object in C:\wamp\www\namnam.com\components\com_namnam\views\listrestaurant\view.html.php on line 26 Notice: Trying to get property of non-object in C:\wamp\www\namnam.com\components\com_namnam\views\listrestaurant\view.html.php on line 29 Notice: Undefined property: namnamModellistrestaurant::$search in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 38 Notice: Undefined property: namnamModellistrestaurant::$filter_order in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 48 Notice: Undefined property: namnamModellistrestaurant::$search in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 38 Notice: Undefined property: namnamModellistrestaurant::$filter_order in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 48 Notice: Undefined property: namnamModellistrestaurant::$filter_order_Dir in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 76 Notice: Undefined property: namnamModellistrestaurant::$filter_order in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 77 Notice: Undefined property: namnamModellistrestaurant::$search in C:\wamp\www\namnam.com\components\com_namnam\models\listrestaurant.php on line 80

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  • How to format a function pointer?

    - by Longpoke
    Is there any way to print a pointer to a function in ANSI C? Of course this means you have to cast the function pointer to void pointer, but it appears that's not possible?? #include <stdio.h> int main() { int (*funcptr)() = main; printf("%p\n", (void* )funcptr); printf("%p\n", (void* )main); return 0; } $ gcc -ansi -pedantic -Wall test.c -o test test.c: In function 'main': test.c:6: warning: ISO C forbids conversion of function pointer to object pointer type test.c:7: warning: ISO C forbids conversion of function pointer to object pointer type $ ./test 0x400518 0x400518 It's "working", but non-standard...

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  • CakePHP Accessing Dynamically Created Tables?

    - by Dave
    As part of a web application users can upload files of data, which generates a new table in a dedicated MySQL database to store the data in. They can then manipulate this data in various ways. The next version of this app is being written in CakePHP, and at the moment I can't figure out how to dynamically assign these tables at runtime. I have the different database config's set up and can create the tables on data upload just fine, but once this is completed I cannot access the new table from the controller as part of the record CRUD actions for the data manipulate. I hoped that it would be along the lines of function controllerAction(){ $this->uses[] = 'newTable'; $data = $this->newTable->find('all'); //use data } But it returns the error Undefined property: ReportsController::$newTable Fatal error: Call to a member function find() on a non-object in /app/controllers/reports_controller.php on line 60 Can anyone help.

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  • my windows forms application throws filenotfoundexception when run on another machine

    - by user248785
    Hi, I have created a windows forms application using vs2008. when i copy the bin folder over to another machine and try to run it the applicaiton throws a filenotfoundexception error. Ive looked at the references files used in the project and each file points to either c:\Windows\Microsoft.NET\Framework\v2.0.50727... c:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5... c:\Program Files\Common Files\Microsoft Shared\Visual Basic Power Packs\1.1... i have verified that these directories exist on the other machines that cause the error. the two machines that i have tried it on and that throw there error are Windows XP WITHOUT VS2008 installed and Windows 7 with VS2008 installed I tried on two machine that DID work which are Windows XP with VS2008 and and my development machine Windows 7 with VS2008 Could anyone provide me with some insight on this issue Thanks

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  • Highlighting in Solr 1.4 - requireFieldMatch

    - by Mark Redding
    I have an object Title : foo Summary : foo bar Body : this is a published story about a foo and a bar All three are set up as fields with stored=true. The user searches across my system for the word "foo" I would like to highlight foo in all three places. The user searches for the word foo in the title "title:foo" I only want to highlight foo within the title. When I added hl.requireFieldMatch=true and hl.usePhraseHighlighter=true as part of my query over to SOLR I am unable to get the highlighting in all three places when doing a generic non fielded search. Is there a way to get both scenarios to work? I had these two items turned off, but I am adding in some fielded portions of the query that the user does not see which only display Published items for instance. the problem is (foo AND status:published) is causing the word published in the body to highlight when the user only searched for the word "foo".

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  • Save downloaded content when in app purchase is complete

    - by jakob
    Hello experts! I have created an app which allows users to buy non-consumable content. The retrieving-ids-payment-process works like a charm. What i can't really figure out is how my content should be saved into the phone. The existing structure is that I have all my current content in Resources/packages/. For every package there is an matching entry in a package.plist. When the purchase is complete it is time to download the content from the server. What i retrieve from the server is a zip file with the new package that I have bought. My observer will call a method named provideContent: -(void) provideContent: (NSString*) productIdentifier { In here I will call my server and download the package } What i need from you guys is some sort of step by step walkthrough or tutorial of how, when the zip is retrieved(is zip allowed?), unpack this zip and add it to my current package structure. Thank you in advance

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  • Sql server indexed view

    - by Jose
    OK, I'm confused about sql server indexed views(using 2008) I've got an indexed view called AssignmentDetail when I look at the execution plan for select * from AssignmentDetail it shows the execution plan of all the underlying indexes of all the other tables that the indexed view is supposed to abstract away. I would think that the execution plan woul simply be an clustered index scan of PK_AssignmentDetail(the name of the clustered index for my view) but it doesn't. There seems to be no performance gain with this indexed view what am I supposed to do? Should I also create a non-clustered index with all of the columns so that it doesn't have to hit all the other indexes? Any insight would be greatly appreciated

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  • Oracle AQ dequeue order

    - by yawn
    A trigger in an Oracle 10g generates upsert and delete messages for a subset of rows in a regular table. These messages consist out of two fields: A unique row id. A non-unique id. When consuming these message I want to impose an order on the deque process that respects the following constraints: Messages must be dequeued in insertion order. Messages belonging to the same id must be dequeued in such a fashion that no other dequeuing process should be able to dequeue a potential successor message (or messages) with this id. Since the messages are generated using a trigger I cannot use groups for this purpose. I am using the Oracle Java interface for AQ. Any pointers on how that could be achieved?

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