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  • PL/SQL Logical Operators evaluate whole function

    - by Chris
    I know in C like languages logical operators are evaluated one at a time so: false && really_expensive_function() is doesn't result in the function being called (I can't remember the CS name for this). Does the same happen in PL/SQL or do I need to break the IF parts out to separate blocks?

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  • measure rendered html in javascript without affecting the measurement

    - by drawnonward
    I am doing pagination in javascript. This is typographic pagination, not chopping up database results. For the most part it works, but I have run into a heisenberg issue where I cannot quite measure text without affecting it. I am not trying to measure text before it is rendered. I want the actual position it shows up at on screen, so I can paginate to where it is naturally wrapped. I am measuring the vertical position of characters, not the horizontal width of strings. The way I do this is similar to this answer in that I am applying a style to a block of text, then measuring the position of the newly created span. If the span does not reach the end of the page, I clear it and make a new span in a linear search. The problem is that the anti-aliased sub-pixel text layout is different when the span is applied. In rare cases, this causes the text to wrap differently when I measure it. I have only seen this when wrapping at a hyphen, and I assume it would not happen when wrapping at white space. As a concrete example, "prepared-he" is the string I am having trouble with. When I measure up to "prepare" it appears, as expected, to be within the current page. When I measure "prepared" the whole phrase wraps down to the next line, moving it to the next page, so it looks like the "d" is the character to break at. I break the text between "prepare" and "d-he" and that is wrong. Trying to evaluate individual characters opens a whole can of worms I would rather avoid. The wrapping changes because, with the new span, the line is 1 pixel wider. A solution to my problem could either be a better way to measure text using javascript, or a way to wrap text in a new element without affecting layout. I have tried setting margin-right:-1px for the class of the span being created to wrap the text. This had no noticeable effect. I am doing this in a UIWebView on the iPhone. There are some measurement related calls that are available in normal WebKit that are not available here. For example, Range does not have getBoundingClientRect or support setting an offset other than 0 in setStart or setEnd. Thank you

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  • jquery How to refresh pages when resize happens?

    - by Maju
    I have some indicator displays settings which float above a menu. Problem is when someone resizes the 'indicators stays on the same place', the page needs to 'refreshed to position correctly'. How to have a page refresh by itself when it detects the page is being resized? or is there any better way to do it? jQuery function findPosY(b) { var a = 0; if (b.offsetParent) { while (1) { a += b.offsetTop; if (!b.offsetParent) { break } b = b.offsetParent } } else { if (b.y) { a += b.y } } return a } function findPosX(b) { var a = 0; if (b.offsetParent) { while (1) { a += b.offsetLeft; if (!b.offsetParent) { break } b = b.offsetParent } } else { if (b.x) { a += b.x } } return a } function setNotifications() { $("#shortcut_notifications span").each(function () { if ($(this).attr("rel") != "") { target = $(this).attr("rel"); if ($("#" + target).length > 0) { var a = findPosY(document.getElementById(target)); var b = findPosX(document.getElementById(target)); $(this).css("top", a - 31 + "px");//-24 $(this).css("left", b + 83 + "px")//+60 } } }); $("#shortcut_notifications").css("display", "block") } CSS #shortcut_notifications { display:none; } .notification { color:#fff; font-weight:700; text-shadow:1px 0 0 #333; background:transparent url(../images/bg_notification.png) no-repeat center; position: absolute;/*absolute*/ width:37px;/*37*/ height:37px; display:block; text-align:center; padding-top:17px; color:#ffffff; } #nav li { display:block; float:right; padding:19px 21px; text-align: left; position:relative; height:24px; font-size:16px; } HTML <li class="settings"><a class="settings" href="#">Settings</a> <ul> <li><a href="#">Game Settings</a></li> <li><a href="#">Transactions </a></li> </ul> </li>

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  • C# VSTO Outlook 2007: How to show contact by EntryID

    - by DjCzermino
    How to open Contact using C# VSTO Outlook 2007 addin by EntryID. Now I am foreaching all contacts in Contact Folder: string entryid = ... Outlook.Application outlookApp = new Outlook.Application(); Outlook.MAPIFolder fldContacts = outlookApp.Session.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderContacts) as Outlook.MAPIFolder; foreach (Outlook._ContactItem contact in fldContacts.Items) { if (contact.EntryID==entryid) { contact.Display(false); break; } } but this is not effective code for many contacts in Contact Folder

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  • Drupal - assign menu to block based on node type

    - by ernie
    I want to assign a specific menu in left sidebar block, based on the node type of the page currently being displayed. I think it should look something like this, but I am stuck. function my_module_nodeapi(&$node, $op) { switch ($op) { case 'view': if ($node->type == "large_reptiles") { //menu_set_active_menu_name('menu_reptile_menu'); //menu_set_active_item('menu_reptile_menu'); } break; } }

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  • did you know some good web site about 'iphone css layouts' ,and can you help me to improve my code..

    - by zjm1126
    i want to create a webpage on iphone , but i can't complete it in a simple way, this is my code: <!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <meta name="viewport" content="width=device-width,minimum-scale=1.0,maximum-scale=5.0,user-scalable=yes"> </head> <body onorientationchange="updateOrientation();" onload=updateOrientation()> <div id="a"> <input id='ab' type="button" value="button" /> </div> <div id=b style="display: none">sssadwq dwqdqw</div> <style type="text/css"> *{ margin:0; padding:0; } /* Reposition on orientation change */ body.landscape{ height: 268px; } body.landscape #a{ height:134px; line-height:134px; } body.landscape #b{ height:114px; width:470px; } body{ height: 416px; } #a{ line-height:208px; height:208px; text-align:center; } #b{ height:198px; width:310px; background:red; border:5px solid black; } </style> <script src="jquery-1.4.2.js" type="text/javascript"></script> <script type="text/javascript"> function updateOrientation() { var orientation = window.orientation; switch (orientation) { // If we're horizontal case 90: case -90: // Set orient to landscape $(document.body).addClass("landscape"); break; // If we're vertical default: // Set orient to portrait $(document.body).removeClass("landscape"); break; } } $('#ab').click(function(){ if($('#b').css('display')=='none')$('#b').css('display','block') else $('#b').css('display','none') }) </script> </body> </html> it use much more fixed number,this is not the best way ,i think the best way is to use the percentage more and more, can you do it fo me ,, thanks

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  • Wcf service operation contract change

    - by pdiddy
    I recently added a parameter to one of the method of a wcf. It was a string parameter. The thing is that I didn't update the service reference on the client side but I was still able to call the wcf service ..... Wasn't it suppose to break?

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  • Drupal Ctools Form Wizard in a Block

    - by Iamjon
    Hi everyone I created a custom module that has a Ctools multi step form. It's basically a copy of http://www.nicklewis.org/using-chaos-tools-form-wizard-build-multistep-forms-drupal-6. The form works. I can see it if I got to the url i made for it. For the life of me I can't get the multistep form to show up in a block. Any clues? /** * Implementation of hook_block() * */ function mycrazymodule_block($op='list', $delta=0, $edit=array()) { switch ($op) { case 'list': $blocks[0]['info'] = t('SFT Getting Started'); $blocks[1]['info'] = t('SFT Contact US'); $blocks[2]['info'] = t('SFT News Letter'); return $blocks; case 'view': switch ($delta){ case '0': $block['subject'] = t('SFT Getting Started Subject'); $block['content'] = mycrazymodule_wizard(); break; case '1': $block['subject'] = t('SFT Contact US Subject'); $block['content'] = t('SFT Contact US content'); break; case '2': $block['subject'] = t('SFT News Letter Subject'); $block['content'] = t('SFT News Letter cONTENT'); break; } return $block; } } /** * Implementation of hook_menu(). */ function mycrazymodule_menu() { $items['hellocowboy'] = array( 'title' = 'Two Step Form', 'page callback' = 'mycrazymodule_wizard', 'access arguments' = array('access content') ); return $items; } /** * menu callback for the multistep form * step is whatever arg one is -- and will refer to the keys listed in * $form_info['order'], and $form_info['forms'] arrays */ function mycrazymodule_wizard() { $step = arg(1); // required includes for wizard $form_state = array(); ctools_include('wizard'); ctools_include('object-cache'); // The array that will hold the two forms and their options $form_info = array( 'id' = 'getting_started', 'path' = "hellocowboy/%step", 'show trail' = FALSE, 'show back' = FALSE, 'show cancel' = false, 'show return' =false, 'next text' = 'Submit', 'next callback' = 'getting_started_add_subtask_next', 'finish callback' = 'getting_started_add_subtask_finish', 'return callback' = 'getting_started_add_subtask_finish', 'order' = array( 'basic' = t('Step 1: Basic Info'), 'lecture' = t('Step 2: Choose Lecture'), ), 'forms' = array( 'basic' = array( 'form id' = 'basic_info_form' ), 'lecture' = array( 'form id' = 'choose_lecture_form' ), ), ); $form_state = array( 'cache name' = NULL, ); // no matter the step, you will load your values from the callback page $getstart = getting_started_get_page_cache(NULL); if (!$getstart) { // set form to first step -- we have no data $step = current(array_keys($form_info['order'])); $getstart = new stdClass(); //create cache ctools_object_cache_set('getting_started', $form_state['cache name'], $getstart); //print_r($getstart); } //THIS IS WHERE WILL STORE ALL FORM DATA $form_state['getting_started_obj'] = $getstart; // and this is the witchcraft that makes it work $output = ctools_wizard_multistep_form($form_info, $step, $form_state); return $output; } function basic_info_form(&$form, &$form_state){ $getstart = &$form_state['getting_started_obj']; $form['firstname'] = array( '#weight' = '0', '#type' = 'textfield', '#title' = t('firstname'), '#size' = 60, '#maxlength' = 255, '#required' = TRUE, ); $form['lastname'] = array( '#weight' = '1', '#type' = 'textfield', '#title' = t('lastname'), '#required' = TRUE, '#size' = 60, '#maxlength' = 255, ); $form['phone'] = array( '#weight' = '2', '#type' = 'textfield', '#title' = t('phone'), '#required' = TRUE, '#size' = 60, '#maxlength' = 255, ); $form['email'] = array( '#weight' = '3', '#type' = 'textfield', '#title' = t('email'), '#required' = TRUE, '#size' = 60, '#maxlength' = 255, ); $form['newsletter'] = array( '#weight' = '4', '#type' = 'checkbox', '#title' = t('I would like to receive the newsletter'), '#required' = TRUE, '#return_value' = 1, '#default_value' = 1, ); $form_state['no buttons'] = TRUE; } function basic_info_form_validate(&$form, &$form_state){ $email = $form_state['values']['email']; $phone = $form_state['values']['phone']; if(valid_email_address($email) != TRUE){ form_set_error('Dude you have an error', t('Where is your email?')); } //if (strlen($phone) 0 && !ereg('^[0-9]{1,3}-[0-9]{3}-[0-9]{3,4}-[0-9]{3,4}$', $phone)) { //form_set_error('Dude the phone', t('Phone number must be in format xxx-xxx-nnnn-nnnn.')); //} } function basic_info_form_submit(&$form, &$form_state){ //Grab the variables $firstname =check_plain ($form_state['values']['firstname']); $lastname = check_plain ($form_state['values']['lastname']); $email = check_plain ($form_state['values']['email']); $phone = check_plain ($form_state['values']['phone']); $newsletter = $form_state['values']['newsletter']; //Send the form and Grab the lead id $leadid = send_first_form($lastname, $firstname, $email,$phone, $newsletter); //Put into form $form_state['getting_started_obj']-firstname = $firstname; $form_state['getting_started_obj']-lastname = $lastname; $form_state['getting_started_obj']-email = $email; $form_state['getting_started_obj']-phone = $phone; $form_state['getting_started_obj']-newsletter = $newsletter; $form_state['getting_started_obj']-leadid = $leadid; } function choose_lecture_form(&$form, &$form_state){ $one = 'event 1' $two = 'event 2' $three = 'event 3' $getstart = &$form_state['getting_started_obj']; $form['lecture'] = array( '#weight' = '5', '#default_value' = 'two', '#options' = array( 'one' = $one, 'two' = $two, 'three' = $three, ), '#type' = 'radios', '#title' = t('Select Workshop'), '#required' = TRUE, ); $form['attendees'] = array( '#weight' = '6', '#default_value' = 'one', '#options' = array( 'one' = t('I will be arriving alone'), 'two' =t('I will be arriving with a guest'), ), '#type' = 'radios', '#title' = t('Attendees'), '#required' = TRUE, ); $form_state['no buttons'] = TRUE; } /** * Same idea as previous steps submit * */ function choose_lecture_form_submit(&$form, &$form_state) { $workshop = $form_state['values']['lecture']; $leadid = $form_state['getting_started_obj']-leadid; $attendees = $form_state['values']['attendees']; $form_state['getting_started_obj']-lecture = $workshop; $form_state['getting_started_obj']-attendees = $attendees; send_second_form($workshop, $attendees, $leadid); } /*----PART 3 CTOOLS CALLBACKS -- these usually don't have to be very unique ---------------------- */ /** * Callback generated when the add page process is finished. * this is where you'd normally save. */ function getting_started_add_subtask_finish(&$form_state) { dpm($form_state); $getstart = &$form_state['getting_started_obj']; drupal_set_message('mycrazymodule '.$getstart-name.' successfully deployed' ); //Get id // Clear the cache ctools_object_cache_clear('getting_started', $form_state['cache name']); $form_state['redirect'] = 'hellocowboy'; } /** * Callback for the proceed step * */ function getting_started_add_subtask_next(&$form_state) { dpm($form_state); $getstart = &$form_state['getting_started_obj']; $cache = ctools_object_cache_set('getting_started', $form_state['cache name'], $getstart); } /*----PART 4 CTOOLS FORM STORAGE HANDLERS -- these usually don't have to be very unique ---------------------- */ /** * Remove an item from the object cache. */ function getting_started_clear_page_cache($name) { ctools_object_cache_clear('getting_started', $name); } /** * Get the cached changes to a given task handler. */ function getting_started_get_page_cache($name) { $cache = ctools_object_cache_get('getting_started', $name); return $cache; } //Salesforce Functions function send_first_form($lastname, $firstname,$email,$phone, $newsletter){ $send = array("LastName" = $lastname , "FirstName" = $firstname, "Email" = $email ,"Phone" = $phone , "Newsletter__c" =$newsletter ); $sf = salesforce_api_connect(); $response = $sf-client-create(array($send), 'Lead'); dpm($response); return $response-id; } function send_second_form($workshop, $attendees, $leadid){ $send = array("Id" = $leadid , "Number_Of_Pepole__c" = "2" ); $sf = salesforce_api_connect(); $response = $sf-client-update(array($send), 'Lead'); dpm($response, 'the final response'); return $response-id; }

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  • How to skip to next iteration in jQuery.each() util?

    - by Josh
    I'm trying to iterate through an array of elements. jQuery's documentation says: jquery.Each() documentation Returning non-false is the same as a continue statement in a for loop, it will skip immediately to the next iteration. I've tried calling 'return non-false;' and 'non-false;' (sans return) neither of which skip to the next iteration. Instead, they break the loop. What am i missing?

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  • A* algorithm works OK, but not perfectly. What's wrong?

    - by Bart van Heukelom
    This is my grid of nodes: I'm moving an object around on it using the A* pathfinding algorithm. It generally works OK, but it sometimes acts wrongly: When moving from 3 to 1, it correctly goes via 2. When going from 1 to 3 however, it goes via 4. When moving between 3 and 5, it goes via 4 in either direction instead of the shorter way via 6 What can be wrong? Here's my code (AS3): public static function getPath(from:Point, to:Point, grid:NodeGrid):PointLine { // get target node var target:NodeGridNode = grid.getClosestNodeObj(to.x, to.y); var backtrace:Map = new Map(); var openList:LinkedSet = new LinkedSet(); var closedList:LinkedSet = new LinkedSet(); // begin with first node openList.add(grid.getClosestNodeObj(from.x, from.y)); // start A* var curNode:NodeGridNode; while (openList.size != 0) { // pick a new current node if (openList.size == 1) { curNode = NodeGridNode(openList.first); } else { // find cheapest node in open list var minScore:Number = Number.MAX_VALUE; var minNext:NodeGridNode; openList.iterate(function(next:NodeGridNode, i:int):int { var score:Number = curNode.distanceTo(next) + next.distanceTo(target); if (score < minScore) { minScore = score; minNext = next; return LinkedSet.BREAK; } return 0; }); curNode = minNext; } // have not reached if (curNode == target) break; else { // move to closed openList.remove(curNode); closedList.add(curNode); // put connected nodes on open list for each (var adjNode:NodeGridNode in curNode.connects) { if (!openList.contains(adjNode) && !closedList.contains(adjNode)) { openList.add(adjNode); backtrace.put(adjNode, curNode); } } } } // make path var pathPoints:Vector.<Point> = new Vector.<Point>(); pathPoints.push(to); while(curNode != null) { pathPoints.unshift(curNode.location); curNode = backtrace.read(curNode); } pathPoints.unshift(from); return new PointLine(pathPoints); } NodeGridNode::distanceTo() public function distanceTo(o:NodeGridNode):Number { var dx:Number = location.x - o.location.x; var dy:Number = location.y - o.location.y; return Math.sqrt(dx*dx + dy*dy); }

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  • CSS ul userlist formatting

    - by Titan
    Hi, I am trying to break away from using tables in my formatting, and am trying out using userlist html tags <ul> Say I have a panel with 10 controls, and I want a 3 columns display, therefore 3 controls in each row, and a total of 4 rows for 10 controls. Should I use 4 different <ul> or should I just stack them inside one <ul> Please tell me the advantages and disadvantages Thanks

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  • login form with java/sqlite

    - by tuxou
    hi I would like to create a login form for my application with the possibility to add or remove users for an sqlite database, i have created the table users(nam, pass) but i can't unclud it in my login form, it someone could help me this is my login code: import java.awt.*; import java.awt.event.*; import javax.swing.*; public class login extends JFrame{ // Variables declaration private JLabel jLabel1; private JLabel jLabel2; private JTextField jTextField1; private JPasswordField jPasswordField1; private JButton jButton1; private JPanel contentPane; // End of variables declaration public login(){ super(); create(); this.setVisible(true); } private void create(){ jLabel1 = new JLabel(); jLabel2 = new JLabel(); jTextField1 = new JTextField(); jPasswordField1 = new JPasswordField(); jButton1 = new JButton(); contentPane = (JPanel)this.getContentPane(); // // jLabel1 // jLabel1.setHorizontalAlignment(SwingConstants.LEFT); jLabel1.setForeground(new Color(0, 0, 255)); jLabel1.setText("username:"); // // jLabel2 // jLabel2.setHorizontalAlignment(SwingConstants.LEFT); jLabel2.setForeground(new Color(0, 0, 255)); jLabel2.setText("password:"); // // jTextField1 // jTextField1.setForeground(new Color(0, 0, 255)); jTextField1.setSelectedTextColor(new Color(0, 0, 255)); jTextField1.setToolTipText("Enter your username"); jTextField1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ jTextField1_actionPerformed(e); } }); // // jPasswordField1 // jPasswordField1.setForeground(new Color(0, 0, 255)); jPasswordField1.setToolTipText("Enter your password"); jPasswordField1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ jPasswordField1_actionPerformed(e); } }); // // jButton1 // jButton1.setBackground(new Color(204, 204, 204)); jButton1.setForeground(new Color(0, 0, 255)); jButton1.setText("Login"); jButton1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e){ jButton1_actionPerformed(e); } }); // // contentPane // contentPane.setLayout(null); contentPane.setBorder(BorderFactory.createEtchedBorder()); contentPane.setBackground(new Color(204, 204, 204)); addComponent(contentPane, jLabel1, 5,10,106,18); addComponent(contentPane, jLabel2, 5,47,97,18); addComponent(contentPane, jTextField1, 110,10,183,22); addComponent(contentPane, jPasswordField1, 110,45,183,22); addComponent(contentPane, jButton1, 150,75,83,28); // // login // this.setTitle("Login To Members Area"); this.setLocation(new Point(76, 182)); this.setSize(new Dimension(335, 141)); this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); this.setResizable(false); } /** Add Component Without a Layout Manager (Absolute Positioning) */ private void addComponent(Container container,Component c,int x,int y,int width,int height){ c.setBounds(x,y,width,height); container.add(c); } private void jTextField1_actionPerformed(ActionEvent e){ } private void jPasswordField1_actionPerformed(ActionEvent e){ } private void jButton1_actionPerformed(ActionEvent e){ System.out.println("\njButton1_actionPerformed(ActionEvent e) called."); String username = new String(jTextField1.getText()); String password = new String(jPasswordField1.getText()); if(username.equals("") || password.equals("")){// If password and username is empty > Do this >>> jButton1.setEnabled(false); JLabel errorFields = new JLabel("<HTML><FONT COLOR = Blue>You must enter a username and password to login.</FONT></HTML>"); JOptionPane.showMessageDialog(null,errorFields); jTextField1.setText(""); jPasswordField1.setText(""); jButton1.setEnabled(true); this.setVisible(true); } else{ JLabel optionLabel = new JLabel("<HTML><FONT COLOR = Blue>You entered</FONT><FONT COLOR = RED> <B>"+username+"</B></FONT> <FONT COLOR = Blue>as your username.<BR> Is this correct?</FONT></HTML>"); int confirm =JOptionPane.showConfirmDialog(null,optionLabel); switch(confirm){ // Switch > Case case JOptionPane.YES_OPTION: // Attempt to Login user jButton1.setEnabled(false); // Set button enable to false to prevent 2 login attempts break; case JOptionPane.NO_OPTION: // No Case.(Go back. Set text to 0) jButton1.setEnabled(false); jTextField1.setText(""); jPasswordField1.setText(""); jButton1.setEnabled(true); break; case JOptionPane.CANCEL_OPTION: // Cancel Case.(Go back. Set text to 0) jButton1.setEnabled(false); jTextField1.setText(""); jPasswordField1.setText(""); jButton1.setEnabled(true); break; } // End Switch > Case } } public static void main(String[] args){ JFrame.setDefaultLookAndFeelDecorated(true); JDialog.setDefaultLookAndFeelDecorated(true); try{ UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel"); }catch (Exception ex){ System.out.println("Failed loading L&F: "); System.out.println(ex); } new login(); }; } my connectDb class : public class Connectdb { private static Connection connect; private static String url ="jdbc:sqlite:data.db"; private static Statement st; private static ResultSet rs; /** * Constructeur privé d'une connection à la bd unique */ private ConnectionBd(){ try { Class.forName("org.sqlite.JDBC"); connect = DriverManager.getConnection(url); } catch (ClassNotFoundException ex) { Logger.getLogger(ex.getName()).log(Level.SEVERE, null, ex); } catch (SQLException e) { System.exit(e.getErrorCode()); } } public static Connection getInstance(){ if(connect == null){ new Connectdb(); }else{ } return connect; } /** * @return */ public static void initTable(String query){ try { Statement state = getInstance().createStatement(ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY); ResultSet res = state.executeQuery(query); res.close(); state.close(); } catch (SQLException e) { JOptionPane.showMessageDialog(null, e.getMessage(), "ERROR ! ", JOptionPane.ERROR_MESSAGE); } }

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  • How to organize infinite while loop in mssql ?

    - by alpav
    I want to use infinite WHILE loop in SQL 2005 and use BREAK keyword to exit from it on certain condition. while true does not work, so I have to use while 1=1. Is there a better way to organize infinite loop ? I know that I can use goto, but while 1=1 begin .. end looks better structurally.

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  • Merge documents

    - by Jelle
    I'm trying to merge two docx-documents into one docx-document using OpenXML SDK 2.0. The documents should be merged without loosing their styling and custom headers and footers. I hope I can achieve this using AltChunk and a section break. But I can't get it working. Is it possible what I'm trying to do? Can someone give me a hint how to achieve this?

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  • Uncaught TypeError: Cannot read property 'length' of undefined

    - by AnApprentice
    I'm working to built a contact list that is grouped by the first letter of the contact's last name. After a succesfull ajax request, the contact is pushed to addContact: Ajax success: ko.utils.arrayForEach(dataJS.contactList, function(c) { contactsModel.addContact(c); }); contactsModel.addContact: //add a contact in the right spot under the right letter contactsModel.addContact = function(newContact) { //grab first character var firstLetter = (newContact.lname || "").charAt(0).toUpperCase(); //if it is a number use # if (!isNaN(firstLetter)) { firstLetter = "#"; } //do we already have entries for this letter if (!this.letterIndex[firstLetter]) { //new object to track this letter's contacts var letterContacts = { letter: firstLetter, contacts: ko.observableArray([]) }; this.letterIndex[firstLetter] = letterContacts; //easy access to it //put the numbers at the end if (firstLetter === "#") { this.contactsByLetter.push(letterContacts); } else { //add the letter in the right spot for (var i = 0, lettersLength = this.contactsByLetter().length; i < lettersLength; i++) { var letter = this.contactsByLetter()[i].letter; if (letter === "#" || firstLetter < letter) { break; } } this.contactsByLetter.splice(i, 0, letterContacts); } } var contacts = this.letterIndex[firstLetter].contacts; //now we have a letter to add our contact to, but need to add it in the right spot var newContactName = newContact.lname + " " + newContact.fname; for (var j = 0, contactsLength = contacts().length; j < contactsLength; j++) { var contactName = contacts()[j].lName + " " + contacts()[j].fName; if (newContactName < contactName) { break; } } //add the contact at the right index contacts.splice(j, 0, newContact); }.bind(contactsModel); The contacts json object from the server looks like this: { "total_pages": 10, "page": page, "contactList": [{ "photo": "http://homepage.mac.com/millhouse/Family%20Tree/images/PersonListIcon.png", "lname": "Bond", "id": 241, "fname": "James", "email": "[email protected]"}, While this works in jsfiddle, when I try it locally, I get the following error during the first push to addContact: Uncaught TypeError: Cannot read property 'length' of undefined jQuery.jQuery.extend._Deferred.deferred.resolveWithjquery-1.5.1.js:869 donejquery-1.5.1.js:6591 jQuery.ajaxTransport.send.callbackjquery-1.5.1.js:7382 Ideas? Thanks

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  • ASP.NET MVC & Web Services

    - by ANaimi
    Hello, Does adding a Web Service to my ASP.NET MVC project break the whole concept of MVC? That Web Service (WCF) depends on the Model layer from my MVC project to communicate with the back-end (so it looks to me like it needs to be part of the MVC solution). Should I add this to the Controller or Model layer?

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  • Dependency Injection: I don't get where to start!

    - by Andy
    I have several articles about Dependency Injection, and I can see the benefits, especially when it comes to unit testing. The units can me loosely coupled, and mocking of dependencies can be made. The trouble is - I just don't get where to start. Consider this snippet below of (much edited for the purpose of this post) code that I have. I am instantiating a Plc object from the main form, and passing in a communications mode via the Connect method. In it's present form it becomes hard to test, because I can't isolate the Plc from the CommsChannel to unit test it. (Can I?) The class depends on using a CommsChannel object, but I am only passing in a mode that is used to create this channel within the Plc itself. To use dependancy injection, I should really pass in an already created CommsChannel (via an 'ICommsChannel' interface perhaps) to the Connect method, or maybe via the Plc constructor. Is that right? But then that would mean creating the CommsChannel in my main form first, and this doesn't seem right either, because it feels like everything will come back to the base layer of the main form, where everything begins. Somehow it feels like I am missing a crucial piece of the puzzle. Where do you start? You have to create an instance of something somewhere, but I'm struggling to understand where that should be. public class Plc() { public bool Connect(CommsMode commsMode) { bool success = false; // Create new comms channel. this._commsChannel = this.GetCommsChannel(commsMode); // Attempt connection success = this._commsChannel.Connect(); return this._connected; } private CommsChannel GetCommsChannel(CommsMode mode) { CommsChannel channel; switch (mode) { case CommsMode.RS232: channel = new SerialCommsChannel( SerialCommsSettings.Default.ComPort, SerialCommsSettings.Default.BaudRate, SerialCommsSettings.Default.DataBits, SerialCommsSettings.Default.Parity, SerialCommsSettings.Default.StopBits); break; case CommsMode.Tcp: channel = new TcpCommsChannel( TCPCommsSettings.Default.IP_Address, TCPCommsSettings.Default.Port); break; default: // Throw unknown comms channel exception. } return channel; } }

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  • Efficient list compacting

    - by Patrik
    Suppose you have a list of unsigned ints. Suppose some elements are equal to 0 and you want to push them back. Currently I use this code (list is a pointer to a list of unsigned ints of size n for (i = 0; i < n; ++i) { if (list[i]) continue; int j; for (j = i + 1; j < n && !list[j]; ++j); int z; for (z = j + 1; z < n && list[z]; ++z); if (j == n) break; memmove(&(list[i]), &(list[j]), sizeof(unsigned int) * (z - j))); int s = z - j + i; for(j = s; j < z; ++j) list[j] = 0; i = s - 1; } Can you think of a more efficient way to perform this task? The snippet is purely theoretical, in the production code, each element of list is a 64 bytes struct EDIT: I'll post my solution. Many thanks to Jonathan Leffler. void RemoveDeadParticles(int * list, int * n) { int i, j = *n - 1; for (; j >= 0 && list[j] == 0; --j); for (i = 0; i < j; ++i) { if (list[i]) continue; memcpy(&(list[i]), &(list[j]), sizeof(int)); list[j] = 0; for (; j >= 0 && list[j] == 0; --j); if (i == j) break; } *n = i + 1; }

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  • ASP.NET MVC : Good Replacement for User Control?

    - by David Lively
    I found user controls to be incredibly useful when working with ASP.NET webforms. By encapsulating the code required for displaying a control with the markup, creation of reusable components was very straightforward and very, very useful. While MVC provides convenient separation of concerns, this seems to break encapsulation (ie, you can add a control without adding or using its supporting code, leading to runtime errors). Having to modify a controller every time I add a control to a view seems to me to integrate concerns, not separate them. I'd rather break the purist MVC ideology than give up the benefits of reusable, packaged controls. I need to be able to include components similar to webforms user controls throughout a site, but not for the entire site, and not at a level that belongs in a master page. These components should have their own code not just markup (to interact with the business layer), and it would be great if the page controller didn't need to know about the control. Since MVC user controls don't have codebehind, I can't see a good way to do this. Update FINALLY, a good (and, in retrospect, obvious) way to accomplish this. using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; namespace K.ObjectModel.Controls { public class TestControl : ViewUserControl { protected override void Render(System.Web.UI.HtmlTextWriter writer) { writer.Write("Hello World"); base.Render(writer); } } } Create a new class which inherits ViewUserControl Override the .Render() method as shown above. Register the control via its associated ASCX as you would in a webForm: <%@ Register TagName="tn" TagPrefix="k" Src="~/Views/Navigation/LeftBar.ascx"%> Use the corresponding tag in whatever view or master page that you need: <k:tn runat="server"/> Make sure your .ascx inherits your new control: <%@ Control Language="C#" Inherits="K.ObjectModel.Controls.TestControl" %> Voila, you're up and running. This is tested with ASP.NET MVC 2, VS 2010 and .NET 4.0. Your custom tag references the ascx partial view, which inherits from the TestControl class. The control then overrides the Render() method, which is called to render the view, giving you complete control over the process from tag to output. Why does everyone try to make this so much harder than it has to be?

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  • Android - what's the difference between the various methods to get a Context?

    - by Alnitak
    In various bits of Android code I've seen: public class MyActivity extends Activity { public void method() { mContext = this; // since Activity extends Context mContext = getApplicationContext(); mContext = getBaseContext(); } } However I can't find any decent explanation of which is preferable, and under what circumstances which should be used. Pointers to documentation on this, and guidance about what might break if the wrong one is chosen, would be much appreciated.

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  • Python urllib2 multiple try statement on urlopen()

    - by Kura
    So, simply I want to be able to run a for across a list of URLs, if one fails then I want to continue on to try the next. I've tried using the following but sadly it throws and exception if the first URL doesn't work. servers = ('http://www.google.com', 'http://www.stackoverflow.com') for server in servers: try: u = urllib2.urlopen(server) except urllib2.URLError: continue else: break else: raise Any ideas? Thanks in advance.

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  • how to refactor tricky logic involving consecutive sets?

    - by keruilin
    The rule at work here is that users can be awarded badges for a streak of 10, 20, and 30. If the user has a streak over 30, such as 40 or 50, then the logic must be that it only awards a 10-streak badge for 40 and a 20-streak badge for 50, and so on. def check_win_streak(streak) badge = 10 while badge < badge::MAX_STREAK_BADGE_SIZE do # MAX_STREAK_BADGE_SIZE = 30 if streak < badge then break end if (streak % badge == 0) then award_streak_badge(badge) end badge += 10 end end

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