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  • Regex and Arrays

    - by syker
    What is a regex I can write in bash for parsing a line and extracting text that can be found between two | (so that would be ex: 1: |hey| 2: |boy|) and keeping those words in some sort of array?

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  • NoSQL DB for .Net document-based database (ECM)

    - by Dane
    I'm halfway through coding a basic multi-tenant SaaS ECM solution. Each client has it's own instance of the database / datastore, but the .Net app is single instance. The documents are pretty much read only (i.e. an image archive of tiffs or PDFs) I've used MSSQL so far, but then started thinking this might be viable in a NoSQL DB (e.g. MongoDB, CouchDB). The basic premise is that it stores documents, each with their own particular indexes. Each tenant can have multiple document types. e.g. One tenant might have an invoice type, which has Customer ID, Invoice Number and Invoice Date. Another tenant might have an application form, which has Member Number, Application Number, Member Name, and Application Date. So far I've used the old method which Sharepoint (used?) to use, and created a document table which has int_field_1, int_field_2, date_field_1, date_field_2, etc. Then, I've got a "mapping" table which stores the customer specific index name, and the database field that will map to. I've avoided the key-value pair model in the DB due to volume of documents. This way, we can support multiple document types in the one table, and get reasonably high performance out of it, and allow for custom document type searches (i.e. user selects a document type, then they're presented with a list of search fields). However, a NoSQL DB might make this a lot simpler, as I don't need to worry about denormalizing the document. However, I've just got concerns about the rest of the data around a document. We store an "action history" against the document. This tracks views, whether someone emails the document from within the system, and other "future" functionality (e.g. faxing). We have control over the document load process, so we can manipulate the data however it needs to be to get it in the document store (e.g. assign unique IDs). Users will not be adding in their own documents, so we shouldn't need to worry about ACID compliance, as the documents are relatively static. So, my questions I guess : Is a NoSQL DB a good fit Is MongoDB the best for Asp.Net (I saw Raven and Velocity, but they're still kinda beta) Can I store a key for each document, and then store the action history in a MSSQL DB with this key? I don't need to do joins, it would be if a person clicks "View History" against a document. How would performance compare between the two (NoSQL DB vs denormalized "document" table) Volumes would be up to 200,000 new documents per month for a single tenant. My current scaling plan with the SQL DB involves moving the SQL DB into a cluster when certain thresholds are reached, and then reviewing partitioning and indexing structures.

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  • Javascript, autoload text box while typing....

    - by user299676
    I am trying to do this but keep on failing. I have a text box. I have also an array of cities, and i want, while typing to display the cities that the user should be able to select. Like if the user is typing : Mu the drop down should display Mumbai \n MuMu ... etc Like the Tags below is doing ! Does someone have any ideas in how this can be accomplished ?

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  • RMI-applets - Cannot understand error message

    - by aeter
    In a simple RMI game I'm writing (an assignment in uni), I reveice: java.rmi.MarshalException: error marshalling arguments; nested exception is: java.net.SocketException: Broken pipe at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:138) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:178) at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:132) at $Proxy2.drawWorld(Unknown Source) at PlayerServerImpl$1.actionPerformed(PlayerServerImpl.java:180) at javax.swing.Timer.fireActionPerformed(Timer.java:271) at javax.swing.Timer$DoPostEvent.run(Timer.java:201) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) The error message appears after the second Player is registered with the RMI Server and the server starts to send the image (the array of pixels) to the 2 applets. The PlayerImpl and the PlayerServerImpl both extend UnicastRemoteObject. I have been struggling with other error messages for some time now, but I cannot understand how to troubleshoot this one. Please help. The relevant parts of the code are: PlayerServerImpl.java: ... timer = new Timer(10, new ActionListener() { // every 10 milliseconds do: @Override public void actionPerformed(ActionEvent e) { ... BufferedImage buff_image = new BufferedImage(GAME_APPLET_WIDTH, GAME_APPLET_HEIGHT, BufferedImage.TYPE_INT_RGB); // create a graphics context on the buffered image Graphics buff_g = buff_image.createGraphics(); ... // draw the score somewhere on the screen buff_g.drawString(score, GAME_APPLET_WIDTH - 20, 10); ... int[] rgbs = new int[GAME_APPLET_WIDTH * GAME_APPLET_HEIGHT]; int imgPixelsGrabbed[] = buff_image.getRGB(0,0,GAME_APPLET_WIDTH,GAME_APPLET_HEIGHT,rgbs,0,GAME_APPLET_WIDTH); // send the new state to the applets for (Player player : players) { player.drawWorld(imgPixelsGrabbed); System.out.println("Sent image to player"); } PlayerImpl.java: private PlayerApplet applet; public PlayerImpl(PlayerApplet applet) throws RemoteException { super(); this.applet = applet; } ... @Override public void drawWorld(int[] imgPixelsGrabbed) throws RemoteException { applet.setWorld(imgPixelsGrabbed); applet.repaint(); } ... PlayerApplet.java: ... private int[] world; // an array of pixels for the new image to be drawn ... // register players player = new PlayerImpl(applet); String serverIPAddressPort = ipAddressField.getText(); if (validateIPAddressPort(serverIPAddressPort)) { server = (PlayerServer) Naming.lookup("rmi://" + serverIPAddressPort + "/PlayerServer"); server.register(player); idPlayer = server.sendPlayerID(); ... @Override public void update(Graphics g) { buff_img = createImage((ImageProducer) new MemoryImageSource(getWidth(), getHeight(), world, 0, getWidth())); Graphics gr = buff_img.getGraphics(); paint(gr); g.drawImage(buff_img, 0, 0, this); } public void setWorld(int[] world) { this.world = world; }

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  • Strange, regex.split Method matches one null element

    - by dontoo
    Regex rx = new Regex(@"[+-]"); string[] substrings = rx.Split(expression); expression = "-9a3dcbh-3bca-4ab4cf-3hc" //This is the iput string I want to split that string between + or -. My VS debugger shows substring array like this: substrings[0] = null //???Why substrings[1] = 9a3dcbh substrings[2] = 3bca substrings[3] = 4ab4cf substrings[4] = 3hc Why is the first element of arry null, is it because I am matching +-, and there is no + in my input string?

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  • zend framework 2 autentification using DbTable failure

    - by josepmra
    I have followed the zend instructions for implement my web Authentication using a database table. It's exactly the same code, but when render the page, the following exceptions appears: Zend\Authentication\Adapter\Exception\RuntimeException File: C:\xampp\htdocs\pfc\vendor\ZF2\library\Zend\Authentication\Adapter\DbTable.php Mensaje: The supplied parameters to DbTable failed to produce a valid sql statement, please check table and column names for validity. produced by this other: Zend\Db\Adapter\Exception\InvalidQueryException File: C:\xampp\htdocs\pfc\vendor\ZF2\library\Zend\Db\Adapter\Driver\Mysqli\Statement.php Mensaje: Statement couldn't be produced with sql: SELECT `users`.*, (CASE WHEN `password` = ? THEN 1 ELSE 0 END) AS `zend_auth_credential_match` FROM `users` WHERE `mail` = ? Seems to be that Statement.php can not execute the sql of above, but I send the sql by phpmyadmin replacing the ? for strings and work ok. I am sure that $dbAdapter works ok also because I have tested it and the columns name are "mail" and "password". This in my code, also I put the $dbAdapter test code. $dbAdapter = new DbAdapter(array( //This DbAdapter Work ok sure!! 'driver' => 'Mysqli', 'database' => 'securedraw', 'username' => 'root', 'password' => '' )); $fp = function($name) use ($dbAdapter) { return $dbAdapter->driver->formatParameterName($name);}; $sql = 'SELECT * FROM ' . $qi('users') . ' WHERE id = ' . $fp('id'); $statement = $dbAdapter->query($sql); $parameters = array('id' => 1); $sqlResult = $statement->execute($parameters); $row = $sqlResult->current(); $mail = $row['mail']; $password = $row['password']; //until here test $dbAdapter exitly!! //Start the auth proccess!! $authAdapter = new AuthDbTableAdapter($dbAdapter); $authAdapter->setTableName('users') ->setIdentityColumn('mail') ->setCredentialColumn('password'); $authAdapter->setIdentity('josep') ->setCredential('josep'); $authResult = $authAdapter->authenticate(); //This is the fail method!!!

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  • C++/STL: std::transform with given stride?

    - by Arman
    Hello, I have a 1d array containing Nd data, I would like to effectively traverse on it with std::transform or std::for_each. unigned int nelems; unsigned int stride=3;// we are going to have 3D points float *pP;// this will keep xyzxyzxyz... Load(pP); std::transform(pP, pP+nelems, strMover<float>(pP, stride));//How to define the strMover?? Kind Regards, Arman.

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  • Rails Multiple Checkboxes with Javascript Dynamic Select

    - by Jack
    Hi, I have followed the Railscast episode 88 to implement a set of dependant drop down menus. In the students-new view, when the student's year is selected, the javascript figures out which courses are available to that year and offers the selection in a new drop down menu. My javascript erb file is here: var courses = new Array(); <% for course in @courses -%> <%for year in course.years -%> courses.push(new Array(<%= year.year_id%>, '<%=h course.title%>', <%= course.id%>)); <%end -%> <% end -%> function yearSelected() { year_id = $('student_year_id').getValue(); options = $('student_course_ids').options; options.length = 1; courses.each(function(course) { if (course[0] == year_id) { options[options.length] = new Option(course[1], course[2]); } }); if (options.length == 1) { $('course_field').hide(); } else { $('course_field').show(); } } document.observe('dom:loaded', function() { yearSelected(); $('student_year_id').observe('change', yearSelected); }); Any my view is as follows: <% form_for(@student) do |f| %> <%= f.error_messages %> <p> <%= f.label :name %><br /> <%= f.text_field :name %> </p> <p> <%= f.label :cid, "CID" %><br /> <%= f.text_field :cid %> </p> <p> <label for="student_year_id">Year:</label> <%= collection_select(:student, :year_id, Year.all, :id, :title, {:prompt => true})%> </p> <p id="course_field"> <label for="student_course_ids">Course:</label> <%= collection_select(:student, :course_ids, Course.find(:all), :id, :title, {:prompt => true}, {:multiple => true})%> </p> <p> <%= f.submit 'Save' %> </p> <% end %> What I would like to do is to add checkboxes instead of the drop down menu. Any suggestions? I previously was using this method, but was not able to get it to work with the new javascript. Cheers

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  • Symfony2 - PdfBundle not working

    - by ElPiter
    Using Symfony2 and PdfBundle to generate dynamically PDF files, I don't get to generate the files indeed. Following documentation instructions, I have set up all the bundle thing: autoload.php: 'Ps' => __DIR__.'/../vendor/bundles', 'PHPPdf' => __DIR__.'/../vendor/PHPPdf/lib', 'Imagine' => array(__DIR__.'/../vendor/PHPPdf/lib', __DIR__.'/../vendor/PHPPdf/lib/vendor/Imagine/lib'), 'Zend' => __DIR__.'/../vendor/PHPPdf/lib/vendor/Zend/library', 'ZendPdf' => __DIR__.'/../vendor/PHPPdf/lib/vendor/ZendPdf/library', AppKernel.php: ... new Ps\PdfBundle\PsPdfBundle(), ... I guess all the setting up is correctly configured, as I am not getting any "library not found" nor anything on that way... So, after all that, I am doing this in the controller: ... use Ps\PdfBundle\Annotation\Pdf; ... /** * @Pdf() * @Route ("/pdf", name="_pdf") * @Template() */ public function generateInvoicePDFAction($name = 'Pedro') { return $this->render('AcmeStoreBundle:Shop:generateInvoice.pdf.twig', array( 'name' => $name, )); } And having this twig file: <pdf> <dynamic-page> Hello {{ name }}! </dynamic-page> </pdf> Well. Somehow, what I just get in my page is just the normal html generated as if it was a normal Response rendering. The Pdf() annotation is supposed to give the "special" behavior of creating the PDF file instead of rendering normal HTML. So, having the above code, when I request the route http://www.mysite.com/*...*/pdf, all what I get is the following HTML rendered: <pdf> <dynamic-page> Hello Pedro! </dynamic-page> </pdf> (so a blank HTML page with just the words Hello Pedro! on it. Any clue? Am I doing anything wrong? Is it mandatory to have the alternative *.html.twig apart from the *.pdf.twig version? I don't think so... :(

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  • PHP mysqli wrapper: passing by reference with __call() and call_user_func_array()

    - by Dave
    Hi everyone. I'm a long running fan of stackoverflow, first time poster. I'd love to see if someone can help me with this. Let me dig in with a little code, then I'll explain my problem. I have the following wrapper classes: class mysqli_wrapper { private static $mysqli_obj; function __construct() // Recycles the mysqli object { if (!isset(self::$mysqli_obj)) { self::$mysqli_obj = new mysqli(MYSQL_SERVER, MYSQL_USER, MYSQL_PASS, MYSQL_DBNAME); } } function __call($method, $args) { return call_user_func_array(array(self::$mysqli_obj, $method), $args); } function __get($para) { return self::$mysqli_obj->$para; } function prepare($query) // Overloaded, returns statement wrapper { return new mysqli_stmt_wrapper(self::$mysqli_obj, $query); } } class mysqli_stmt_wrapper { private $stmt_obj; function __construct($link, $query) { $this->stmt_obj = mysqli_prepare($link, $query); } function __call($method, $args) { return call_user_func_array(array($this->stmt_obj, $method), $args); } function __get($para) { return $this->stmt_obj->$para; } // Other methods will be added here } My problem is that when I call bind_result() on the mysqli_stmt_wrapper class, my variables don't seem to be passed by reference and nothing gets returned. To illustrate, if I run this section of code, I only get NULL's: $mysqli = new mysqli_wrapper; $stmt = $mysqli->prepare("SELECT cfg_key, cfg_value FROM config"); $stmt->execute(); $stmt->bind_result($cfg_key, $cfg_value); while ($stmt->fetch()) { var_dump($cfg_key); var_dump($cfg_value); } $stmt->close(); I also get a nice error from PHP which tells me: PHP Warning: Parameter 1 to mysqli_stmt::bind_result() expected to be a reference, value given in test.php on line 48 I've tried to overload the bind_param() function, but I can't figure out how to get a variable number of arguments by reference. func_get_args() doesn't seem to be able to help either. If I pass the variables by reference as in $stmt->bind_result(&$cfg_key, &$cfg_value) it should work, but this is deprecated behaviour and throws more errors. Does anyone have some ideas around this? Thanks so much for your time.

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  • Can't create file in Ada 95

    - by duder
    Hello, I'm trying to follow a standard reference for opening files but running into a constraint_error at the line when I call Ada.Text_IO.Create(). It says "range check failed". Any help appreciated, here's the code: WITH Ada.Text_IO; WITH Ada.Integer_Text_IO; USE Ada.Text_IO; USE Ada.Integer_Text_IO; PROCEDURE FileManip IS --Variables Start_Int : Integer; Stop_Int : Integer; Max_Length : Integer; --Output File MaxName : CONSTANT Positive := 80; SUBTYPE NameRange IS Positive RANGE 1..MaxName; OutFileName : String(NameRange) := (OTHERS => '#'); OutNameLength : NameRange; OutData : File_Type; --Array TYPE Chain_Array IS ARRAY(1..500) OF Integer; Sum : Integer := 1; BEGIN --Inputs Ada.Text_IO.Put(Item => "Enter a starting Integer: "); Ada.Integer_Text_IO.Get(Item => Start_Int); Ada.Text_IO.New_Line; Ada.Text_IO.Put(Item => "Enter a stopping Integer: "); Ada.Integer_Text_IO.Get(Item => Stop_Int); Ada.Text_IO.New_Line; Ada.Text_IO.Put(Item => "Enter a Maximum Length to search: "); Ada.Integer_Text_IO.Get(Item => Max_Length); Ada.Text_IO.New_Line; Ada.Text_IO.Put(Item => "Enter a output file name > "); Ada.Text_IO.Get_Line( Item => OutFileName, Last => OutNameLength); Ada.Text_IO.Create( File => OutData, Mode => Ada.Text_IO.Out_File, Name => OutFileName(1..OutNameLength)); Ada.Text_IO.New_Line;

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  • Drupal UC "Quoting / Estimate" error

    - by Murtez
    Hi, I was playing around with Drupal UC and installed a module called "Quoting / Estimate" (http://drupal.org/project/quoting), I tried to run it and got this error: **warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'quoting_quote_clear_page' was given in /home/ergospec/public_html/d/includes/menu.inc on line 348** Has anyone run into this problem? Second question: anyone know of a good quotation module (where customer can request a price quote, not the brackets)? It doesn't have to be in Drupal. Any help is appreciated. Murtez

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  • Comparing file contents in F#

    - by Bartosz Milewski
    I wrote a quick and dirty function to compare file contents (BTW, I have already tested that they are of equal size): let eqFiles f1 f2 = let bytes1 = Seq.ofArray (File.ReadAllBytes f1) let bytes2 = Seq.ofArray (File.ReadAllBytes f2) let res = Seq.compareWith (fun x y -> (int x) - (int y)) bytes1 bytes2 res = 0 I'm not happy with reading the whole contents into an array. I'd rather have a lazy sequence of bytes, but I can't find the right API in F#.

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  • are deleted entries counted in the load factor of a hash table using open addressing

    - by Dr. Monkey
    When calculating the load factor of a hashtable with an open-addressing array implementation I am using: numberOfKeysInArray/sizeOfArray however it occurred to me that since deleted entries must be marked as such (to distinguish them from empty spaces), it might make sense to include these in the number of keys. My thinking is that as far as estimating the average number of probes to find an entry, deleted entries should count towards the load factor, but as far as inserting a new key they should not. Which is the proper calculation: including deleted keys or not?

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  • Javascript callback and google maps api question

    - by es11
    I am using google maps api v3 and have an array of arrays object: MVCArray.<MVCArray.<LatLng>> I want to iterate over this. I see that MVCArray has a method forEach which uses a call back, but I have no idea how to use this (I haven't done much js). The api defines this method as follows: forEach(callback:function(*, number))) Could somebody please show me an example of how to use this given an MVCArray of MVCArrays?

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  • How to receive XMLHttpRequest with PHP?

    - by Adrian
    I would like to be able to read XMLHttpRequest that is sent to a PHP page. I am using prototype's Ajax.Request function, and I am sending a simple XML structure. When trying to print the POST array on the PHP page, I don't get any output. Any help appreciated.

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