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  • Singelton restricted to instance of dll

    - by codeySmurf
    If I create a singleton class in the context of a dll, the singleton class is instantiated once and used by all instances of the dll. I am using a dll as a plug-in for an application. Now the following thing came to my mind: If I use a singleton Class, it will be shared across multiple instances of the plug-in. However, this makes it difficult to manage the lifetime of the singleton class efficiently. The only way I could think of would be to use a reference count and to make the singleton delete its self when the reference count is 0. Does anyone have any better ideas on that? Is there any good way to restrict the singleton object to one instance of the dll? Language is c++

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  • Is the method that I am using for retrieval in my generic list optimized

    - by fishhead
    At some time there will be a large amount of records, about 50,000. with that in mind is the method GetEquipmentRecord up to the task. thanks for you opinions. public enum EquipShift { day, night }; public class EquipStatusList : List<EquipStatus> { string SerialFormat = "yyyyMMdd"; int _EquipmentID; string _DateSerial; EquipShift _Shift; public EquipStatus GetEquipmentRecord(int equipmentID, EquipShift shift, DateTime date) { _DateSerial = date.ToString(SerialFormat); _Shift = shift; _EquipmentID = equipmentID; return this.Find(checkforEquipRecord); } bool checkforEquipRecord(EquipStatus equip) { if ((equip.EquipmentID == _EquipmentID) && (equip.Shift == _Shift) && (equip.Date.ToString(SerialFormat) == _DateSerial)) return true; else return false; } }

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  • Best way in Python to determine all possible intersections in a matrix?

    - by ssweens
    So if I have a matrix (list of lists) of unique words as my column headings, document ids as my row headings, and a 0 or 1 as the values if the word exists in that particular document. What I'd like to know is how to determine all the possible combinations of words and documents where more than one word is in common with more than one document. So something like: [[Docid_3, Docid_5], ['word1', 'word17', 'word23']], [[Docid_3, Docid_9, Docid_334], ['word2', 'word7', 'word23', 'word68', 'word982']], and so on for each possible combination. Would love a solution that provides the complete set of combinations and one that yields only the combinations that are not a subset of another, so from the example, not [[Docid_3, Docid_5], ['word1', 'word17']] since it's a complete subset of the first example. I feel like there is an elegant solution that just isn't coming to mind and the beer isn't helping. Thanks.

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  • ASP.Net website makes browser load unwanted (non-referenced) plugins

    - by alec0001
    I've found that some of my ASP.Net web apps prompt the browser to load plugins that I'm not explicitely using and certainly haven't deliberately referenced in the project settings. Two that come to mind are for MS MediaPlayer and the "SVG Viewer for Netscape". The only commonality I've determined so far is that the two sites/apps affected both use Master pages (nested in some cases). We don't use SVG file types (just the normal mix of jpg/gif/png) and no video/audio (not yet anyway). Can anyone provide a hint as to where the references for these might be creeping in? e.g. Is it a server-level include? Or a .Net runtime default when using master pages? Does anyone else even experience this, or is it just me? No urgency, I'd just like to remove it if possible. Thanks. Al

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  • How to pass sockets created to another Java Process

    - by whoi
    Hi; We have an application which creates many sockets which belongs to its thread, By design if this application somehow fails, all threads stop which is not wanted. So to overcome this issue, each thread must be separated from the main application, if one of the threads fails, the other ones should be running. One thing in our mind is to pass created socket to another java process, so what is the correct way? An other approach also is welcome? Waiting for your suggestions...

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  • Is it possible to implement a lightweight database using Blackberry Persistance options?

    - by Tobias
    First I would like to explain why I want to use alternate Blackberry Persistance options rather than a Blackberry database itself, say SQLite. The reason is that the application i'm designing, I want it to be used in all the previous versions of Blackberry rather than just the ones having OS 5.0 or greater. Now, coming back to the actual question, I have got a database that I want to replicate to be used in the Blackberry application. The database has 8 tables and each table has approximately 12 different columns. One of the table has 1000 rows. Now if I was to implement this DB for a Blackberry application , keeping in mind that it will work on all the versions of Blackberry, what would be the best way to implement it?

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  • Confusion regarding a function definition in C

    - by user34790
    I found this function definition void *func(void *param) { } Actually, I have a certain confusion regarding this function definition. What does void * mean in the return type of the function as well as the argument. I am a beginner in C. So please don't mind. Thank you void *func(void *param) { int s = (int)param; .... } Well looking at the above program which I found. I think it should have been int *s = (int *)param; isn't it? I am confused

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  • C++ - How to call a member function for an inherited object.

    - by Francisco P.
    Hello! I have a few classes (heat, gas, contact, pressure) inheriting from a main one (sensor). I have a need to store them in a vector<Sensor *> (part of the specification). At some point in time, I need to call a function that indiscriminately stores those Sensor *. (also part of the specification, not open for discussion) Something like this: for(size_t i = 0; i < Sensors.size(); ++i) Sensors[i]->storeSensor(os) //os is an ofstream kind of object, passed onwards by reference Where and how shall storeSensor be defined? Is there any simple way to do this or will I need to disregard the specification? Mind you, I'm a beginner! Thanks for your time!

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  • Replace html tag with a certain class

    - by fire
    I am looking for suitable replacement code that allows me replace the content inside of any HTML tag that has a certain class e.g. $class = "blah"; $content = "new content"; $html = '<div class="blah">hello world</div>'; // code to replace, $html now looks like: // <div class="blah">new content</div> Bare in mind that: It wont necessarily be a div, it could be <h2 class="blah"> The class can have more than one class and still needs to be replaced e.g. <div class="foo blah green">hello world</div> I am thinking regular expressions should be able to do this, if not I am open to other suggestions such as using the DOM class (although I would rather avoid this if possible because it has to be PHP4 compatible).

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  • where id = multiple artists

    - by pixel
    Any time there is an update within my music community (song comment, artist update, new song added, yadda yadda yadda), a new row is inserted in my "updates" table. The row houses the artist id involved along with other information (what type of change, time and date, etc). My users have a "favorite artists" section where they can do just that -- mark artists as their favorites. As such, I'd like to create a new feature that shows the user the changes made to their various favorite artists. How should I be doing this efficiently? SELECT * FROM table_updates WHERE artist_id = 1 and artist_id = 500 and artist_id = 60032 Keep in mind, a user could have 43,000 of our artists marked as a favorite. Thoughts?

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  • C++ - Efficient container for large amounts of searchable data?

    - by Francisco P.
    Hello, everybody! I am implementing a text-based version of Scrabble for a College project. My dictionary is quite large, weighing in at around 400.000 words (std::string). Searching for a valid word will suck, big time, in terms of efficiency if I go for a vector<string> ( O(n) ). Are there any good alternatives? Keep in mind, I'm enrolled in freshman year. Nothing TOO complex! Thanks for your time! Francisco

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  • How would I go about writing a conditional statement to check if visitor is coming from a particular

    - by Matthew
    Hello guys, What I have in mind is this... We are going to have people come from a particular site during a acquisition campaign and was wondering how I could conditionalize a certain section of my site to display a thank you message instead of the sign up form as they would have had the opportunity to fill this out before coming to my landing page. I have seen solutions like: $referal = mysql_real_escape_string($_SERVER['HTTP_REFERER']); I would like to know if this is the best way to get this to work??? - okay this is what i think might work. The third party website that is referring people to our landing page once the form on that site has been filled out can push into the record a hidden input value of "www.sample.com" or whatever... then I can have something check the for that particular value and fire off the conidtional. Does that even sound right?

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  • iPhone : Primitives getters and setters

    - by Burf2000
    I feel a bit miffed at the moment, I done a few iPhone projects that use floats and ints etc and all is fine. I now using OpenGL and GLFloat[] C arrays etc and it seems unless I make methods to set / get them it crashes on the device (not the simulator). Now as these are not setup as properties (I don't think c arrays can) it kind of makes sense. However the project has been working for months without them. It seems something in the code is wiping out anything float / ints to the point that the debugger can see an assigned value but accessing it crashes the phone. As soon as I think I know something for this platform, something changes my mind lol.

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  • Need to ignore property in XmlSerialization because of circular reference

    - by NestorArturo
    Have an object with a property I don't need to serialize. The type of this property generates a circular reference which I expected, so I decorated this property with everything comes to my mind: private clsDeclaracion _Declaracion; [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)] [System.Xml.Serialization.XmlIgnore] public clsDeclaracion Declaracion { get { return _Declaracion; } set { _Declaracion = value; } } However, the circular reference keeps firing. Tried using a public field with no luck. This is my serialization code: System.Xml.Serialization.XmlSerializer Serializador = new System.Xml.Serialization.XmlSerializer(objeto.GetType()); using (StreamWriter SW = System.IO.File.CreateText(ArchivoTemp)) { Serializador.Serialize(SW, objeto); }

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  • Making commercial Java software

    - by roddik
    Hi. I intend to make some software to be sold over internet. I've only created open-source before, so I have really no idea of how to protect it from being cracked and distributed as warez. Bearing in mind that I know like two programms that aren't either cracked or not really useful I decided that the only more or less reliable way may look like this: Connect to a server and provide licensing info and some sort of hardware summary info If everything is fine, the server returns some crucial missing parts of the program bound to that certain pc along with the usage limit of say 2 days That crucial stuff is not saved to hard drive, so it is downloaded every time the program starts, if the programm runs more than 2 days, data is downloaded again If the same info is used from different computers, suspend the customer account What do you think about this? It may seem a bit to restrictive, but I'd better make less sales at first then eventually see my precious killer app downloaded for free. Anyways, first I need some basic theory/tutorials/guides about how to ensure that user only uses a certain Java app if he has paid for it, so please suggest some. Thanks

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  • php/ssh2 script does not display the stdout to $stream

    - by kamal
    The following php script works for simple linux commands, like ps -ef , but when i use ./dstat -t -a , it seems to hang and i dont get the prompt back on my local machine. Kep in mind that all commands are executed over ssh on a remote host: <?php $target = time() . '_' . 'txt'; if($ssh = ssh2_connect('10.1.0.174', 22)) { if(ssh2_auth_password($ssh, 'root', 'kmoon77')) { //$stream = ssh2_exec($ssh, 'whoami'); $sCommand = 'dstat -a'; //$sCommand = 'ps -ef'; $stream = ssh2_exec($ssh, $sCommand); //$stream = ssh2_exec($ssh, 'pwd'); stream_set_blocking($stream, true); $data = ''; while($buffer = fread($stream, 4096)) { $data .= $buffer; } //fclose($stream); echo $data; // user } } ?>

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  • Mysterious c debugging problem when trying to utilize printfs

    - by O_O
    Ok, folks. I've never encountered this before and it boggles the mind and is illogical. I have a somewhat complex loop and I want to try and see if everything is working by putting some printf statements. I look the intermediate products using printf and verify that the answer is ok. Then, when I comment out the printf to the intermediate products, the answer is WRONG. Has anyone ever encountered this? This is driving me insane and I don't see how the printfs could change an answer.... X_x If it helps, I am using a c/c++ compiler for a DSP. Thanks for any advice.. Here is a snippet... printf("splitBackground = %d, numWindowPoints = %d\n", splitBackground, numWindowPoints); splitBackground = splitBackground/numWindowPoints; printf("%d ", splitBackground); This is good but when I comment out the first line of code, it turns out to be hugely incorrect. :(

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  • Page layout breaks only in Opera which is weird?

    - by Qwibble
    Okay so I'm working on an admin panel, in which everything should always be only within the view port until you hit the minimum widths and heights set. The current version of it can be seen here (its still in development) : http://qwibbledesigns.co.uk/preview/Admin/ In layout terms, it works flawlessly in all browsers, even down to ie6 =D. However, opera doesn't like it, and for some reason, always add's extra space to the bottom of the page, making it have an extra scrollbar, and I can't fathom it out which is highly annoying. Jquery is used to set the height of the container, sidebar, and content area so that they're always within the browser view port, and these functions rerun when the window is resized. I therefore cannot work out the the life of me what's wrong with opera. Would anyone mind taking a look and seeing if they can work it out? =D

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  • Google Chrome window.open height includes URL bar

    - by andyjeffries
    When we open a window using: window.open("/calendar",'calendar','width=950,height=576,titlebar=no,statusbar=no,menubar=no,resizable=no,scrollbars=no'); Firefox 3 and IE 7 open it to have a content area height of 576 plus the browser items (URL bar, status bar, etc). Chrome however opens it to have a total height of 576 meaning a scrollbar appears to the right of the content (and then the bottom because the width is now reduced). How can I get around this? It's for a heavy layout part of a web app so it's not just a matter of "let the user scroll", the client doesn't want that. Has anyone come across this? I don't mind browser sniffing and opening the window bigger, but I know that's yucky these days.

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  • .net c# datagridview populating with non database data/setup

    - by flavour404
    Hi, I have never used the datagridview in any other scenario other than one where it is populating by a database so suddenly my mind goes blank... I have 10 tubes, each with 8 vertical positions within it, so I have a 10 by 8 grid basically. Each has of those slots has (or not) an image in a folder. How do I get a datagridview to reflect this information, draw a grid, check the folder and if the image exists paint it white, and if not paint it red? Sorry it if sounds a little odd, thanks, R.

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  • How do I target a new browser window en ASP.NET MVC?

    - by Richard77
    Hello, This is what I want: Let's say I have a textbox and a button on a page. when I click the button, I get a page in a new browser window where I can make some choices. when I click OK on that new window, it disappears and my choice appears in the textbox located in the first window. How do I do that in ASP.NET MVC? I know that what I'm trying to do can be easily obtained through JavaScript. However, I'd like to apply the unobtrusive principle. So, I'll do first without JQuery in mind then, later, add JQuery. Thanks for helping

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  • CSS. Placing footer at bottom of the webpage (not in the bottom of screen) in ASP Pages

    - by strakastroukas
    I have read a lot of approaches regarding placement of the footer in a webpage with CSS. Between others i found solutions, within SO too. The problem is (i think) that most of them, do not apply in asp pages. So the question is how can i place the footer with pure CSS in Asp pages? Before you post your answer, you have to take in mind the following. I use a master page (If this one has anything to do) The webpage contains the form element, which i believe destroys the placing of the footer in the bottom of the webpage. <form name="aspnetForm" method="post" action="Default.aspx" id="aspnetForm"> So, you may start down-voting, but i think a different approach exists regarding footer placement with CSS in Asp.Net pages

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  • calling javascript function inside orkut iframe

    - by tsetsik
    Hi guys, I'm having a web game loaded in orkut application via iframe so there are the orkut iframe and mine iframe inside the xml. Everything is ok, but now I need to have a button for inviting some friends and wall posts from some features. I didn't find a way for including the orkut javascript in the game's code so the first thing that pops into my mind was to call a custom function in the xml by using: window.parent.myFunction(); but it gives me error: permission denied. I've tried some other ways of reaching that function but the error is the same. Does anybody know a way of doing that or this can't be done ?

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  • Django: IE doesn't load locahost or loads very SLOWLY

    - by reedvoid
    I'm just starting to learn Django, building a project on my computer, running Windows 7 64-bit, Python 2.7, Django 1.3. Basically whatever I write, it loads in Chrome and Firefox instantly. But for IE (version 9), it just stalls there, and does nothing. I can load up "http://127.0.0.1:8000" on IE and leave the computer on for hours and it doesn't load. Sometimes, when I refresh a couple of times or restart IE it'll work. If I change something in the code, again, Chrome and Firefox reflects changes instantly, whereas IE doesn't - if it loads the page at all. What is going on? I'm losing my mind here....

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  • php/mysql question, retrieving information

    - by chance
    Hey SO, I have a question, pretty new at PHP and MySql but was curious is it possible to display only the most recent column to a table, from a database? I know it is possible to display a list of all information, or if you have just one column of information in your table to display that using the Here is my code for my basic script (just loads 1 column of information) I would like it to only print out the recent column i added to the table $con = mysql_connect ("localhost","username","password"); if (!$con) { die ('Could not connect:' . mysql_error()0; } mysql_select_db("db_name", $con); $result = mysql_query(Select column FROM table"); while($row = mysql_fetch_array($result)) { echo $row['column']; } mysql_close($con); * keep in mind, im not looking for someone to shoot me my code with it completed, though it would be handy, however just giving me the options of what I have to do, or what the script is called would be plentiful enough for my research, thanks!

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