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  • Mandatory Parameters in Request object (WCF)

    - by Martin Moser
    lHi, I'm currently writing a WCF service. One of those methods get's a request object and returns a response object. In the request there are a couple of value-type members. Is there a way to define members are mandatory in the declarative way? I'm in an early stage of development and I don't want to start with versioning now. In addition I don't want to have method sig with 25 parameters, therefore I created the request object. The problem I have is that due to the value-types, I can never be sure if the consumer of the service intended to have the default value in there, or it was just by lazyness. On consumer side you don't easily detect that you probably missed that property. So I would like to have something that forces the caller of the service to provide an value, and if not he ideally get's a compile-time error. any ideas? tia, Martin

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  • How to select all options from a drop list in php / mysql

    - by Mirage81
    Thanks to stackoverflow.com's frienly experts I've managed to create my first php + mysql application. The code searches a mysql database for last names and cities. The choices are made through two drop lists like these: Choose city: All cities Liverpool Manchester Choose last name: All last names Lennon Gallagher The code would return eg. all the Lennons living in Liverpool. However, I haven't been able to make the options "All cities" and "All last names" to work so that the code would return eg. all the Lennons living in any city or all the people living in Liverpool. So, how can that be done? The code so far: index.php <?php $conn = mysql_connect('localhost', 'user', 'password') or die("Connection failed"); mysql_select_db("database", $conn) or die("Switch database failed"); //this gets the cities from the database to the drop list $query = "SELECT DISTINCT city FROM user".mysql_real_escape_string($city); $result = mysql_query($query, $conn); $options=""; while ($row=mysql_fetch_array($result)) { $city=$row["city"]; $options.="<OPTION VALUE=\"$city\">".$city; } //this gets the last names from the database to the drop list $query2 = "SELECT DISTINCT lastname FROM user".mysql_real_escape_string($lastname); $result2 = mysql_query($query2, $conn); $options2=""; while ($row2=mysql_fetch_array($result2)) { $lastname=$row2["lastname"]; $options2.="<OPTION VALUE=\"$lastname\">".$lastname; } ?> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="content-type"> <title>test</title> </head> <body> <form action="get.php" method="post"> <p> <select name="city"> <option value=0>Choose <option value=1>All cities <?=$options?> </select> </p> <p> <select name="lastname"> <option value=0>Choose <option value=1>All last names <?=$options2?> </select> </p> <p> <input value="Search" type="submit"> </p> </form> <br> </body> </html> get.php <?php $conn = mysql_connect('localhost', 'user', 'password') or die("Connection failed"); mysql_select_db("database", $conn) or die("Switch database failed"); $query = "SELECT * FROM user WHERE city = '".mysql_real_escape_string($_POST['city'])."' AND lastname = '".mysql_real_escape_string($_POST['lastname'])."'"; $result = mysql_query($query, $conn); echo $rowcount; $zerorows=true; while ($row = mysql_fetch_assoc($result)) { $zerorows=false; echo '<b>City: </b>'.htmlspecialchars($row[city]).'<br />'; echo '<b>Last name: </b>'.htmlspecialchars($row[lastname]).'<br />'; echo '<b>Information: </b>'.htmlspecialchars($row[information]).'<br />'.'<br />'; } if($zerorows) echo "No results"; mysql_close($conn); ?>

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  • Why Date Format in ASP NET MVC Differs when used inside Html Helper?

    - by Marcio Gabe
    Hi, I just came across a very interesting issue. If I use ViewData to pass a DateTime value to the view and then display it inside a textbox, even though I'm using String.Format in the exact same manner, I get different formatting results when using the Html.TextBox helper. <%= Html.TextBox("datefilter", String.Format("{0:d}", ViewData["datefilter"]))%> <input id="test" name="test" type="text" value="<%: String.Format("{0:d}", ViewData["datefilter"]) %>" /> The above code renders the following html: <input id="datefilter" name="datefilter" type="text" value="2010-06-18" /> <input id="test" name="test" type="text" value="18/06/2010" /> Notice how the fist line that uses the Html helper produces the date format in one way while the second one produces a very different output. Any ideas why? Note: I'm currently in Brazil, so the standard short date format here is dd/MM/yyyy.

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  • Duplicate partitioning key performance impact

    - by Anshul
    I've read in some posts that having duplicate partitioning key can have a performance impact. I've two tables like: CREATE TABLE "Test1" ( CREATE TABLE "Test2" ( key text, key text, column1 text, name text, value text, age text, PRIMARY KEY (key, column1) ... ) PRIMARY KEY (key, name,age) ) In Test1 column1 will contain column name and value will contain its corresponding value.The main advantage of Test1 is that I can add any number of column/value pairs to it without altering the table by just providing same partitioning key each time. Now my question is how will each of these table schema's impact the read/write performance if I've millions of rows and number of columns can be upto 50 in each row. How will it impact the compaction/repair time if I'm writing duplicate entries frequently?

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  • DataGridView Cell Validating only when 'Enter' is pressed

    - by Eldad
    Hi, I want to validate and commit the value entered in the DataGridViewCell ONLY when the user presses the 'Enter' key. If the users presses any other key or mouse button (Arrow keys, Pressing a different cell using the mouse...), I want the behavior to be similar to the 'ESC' key: Move the focus to the new cell and revert the edited cell value to its previous value.

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  • How Does One Make Scala Control Abstraction in Repeat Until?

    - by peter_pilgrim
    Hi I am Peter Pilgrim. I watched Martin Odersky create a control abstraction in Scala. However I can not yet seem to repeat it inside IntelliJ IDEA 9. Is it the IDE? package demo class Control { def repeatLoop ( body: = Unit ) = new Until( body ) class Until( body: = Unit ) { def until( cond: = Boolean ) { body; val value: Boolean = cond; println("value="+value) if ( value ) repeatLoop(body).until(cond) // if (cond) until(cond) } } def doTest2(): Unit = { var y: Int = 1 println("testing ... repeatUntil() control structure") repeatLoop { println("found y="+y) y = y + 1 } { until ( y < 10 ) } } } The error message reads: Information:Compilation completed with 1 error and 0 warnings Information:1 error Information:0 warnings C:\Users\Peter\IdeaProjects\HelloWord\src\demo\Control.scala Error:Error:line (57)error: Control.this.repeatLoop({ scala.this.Predef.println("found y=".+(y)); y = y.+(1) }) of type Control.this.Until does not take parameters repeatLoop { In the curried function the body can be thought to return an expression (the value of y+1) however the declaration body parameter of repeatUntil clearly says this can be ignored or not? What does the error mean?

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  • Asp.Net Mvc - Html.TextBox - Set Autofocus property

    - by Melursus
    In Html 5, there is an new attribute on textbox call autofocus. The problem is it is a boolean value (there or not there) It should look something like : <input name="a" value="" autofocus> I try : <%= Html.TextBox( "a", null, new { autofocus } ) %> But, it's give me an error because I'm not setting a value to autofocus... I know I can do it manually, but can I do it with Html.TextBox ?

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  • Creating New Objects in JavaScript

    - by Ken Ray
    I'm a relatively newbie to object oriented programming in JavaScript, and I'm unsure of the "best" way to define and use objects in JavaScript. I've seen the "canonical" way to define objects and instantiate a new instance, as shown below. function myObjectType(property1, propterty2) { this.property1 = property1, this.property2 = property2 } // now create a new instance var myNewvariable = new myObjectType('value for property1', 'value for property2'); But I've seen other ways to create new instances of objects in this manner: var anotherVariable = new someObjectType({ property1: "Some value for this named property", property2: "This is the value for property 2" }); I like how that second way appears - the code is self documenting. But my questions are: Which way is "better"? Can I use that second way to instantiate a variable of an object type that has been defined using the "classical"way of defining the object type with that implicit constructor? If I want to create an array of these objects, are there any other considerations? Thanks in advance.

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  • Best way to test for a variable's existence in PHP; isset() is clearly broken

    - by chazomaticus
    From the isset() docs: isset() will return FALSE if testing a variable that has been set to NULL. Basically, isset() doesn't check for whether the variable is set at all, but whether it's set to anything but NULL. Given that, what's the best way to actually check for the existence of a variable? I tried something like: if(isset($v) || @is_null($v)) (the @ is necessary to avoid the warning when $v is not set) but is_null() has a similar problem to isset(): it returns TRUE on unset variables! It also appears that: @($v === NULL) works exactly like @is_null($v), so that's out, too. How are we supposed to reliably check for the existence of a variable in PHP? Edit: there is clearly a difference in PHP between variables that are not set, and variables that are set to NULL: <?php $a = array('b' => NULL); var_dump($a); PHP shows that $a['b'] exists, and has a NULL value. If you add: var_dump(isset($a['b'])); var_dump(isset($a['c'])); you can see the ambiguity I'm talking about with the isset() function. Here's the output of all three of these var_dump()s: array(1) { ["b"]=> NULL } bool(false) bool(false) Further edit: two things. One, a use case. An array being turned into the data of an SQL UPDATE statement, where the array's keys are the table's columns, and the array's values are the values to be applied to each column. Any of the table's columns can hold a NULL value, signified by passing a NULL value in the array. You need a way to differentiate between an array key not existing, and an array's value being set to NULL; that's the difference between not updating the column's value and updating the column's value to NULL. Second, Zoredache's answer, array_key_exists() works correctly, for my above use case and for any global variables: <?php $a = NULL; var_dump(array_key_exists('a', $GLOBALS)); var_dump(array_key_exists('b', $GLOBALS)); outputs: bool(true) bool(false) Since that properly handles just about everywhere I can see there being any ambiguity between variables that don't exist and variables that are set to NULL, I'm calling array_key_exists() the official easiest way in PHP to truly check for the existence of a variable. (Only other case I can think of is for class properties, for which there's property_exists(), which, according to its docs, works similarly to array_key_exists() in that it properly distinguishes between not being set and being set to NULL.)

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  • redirect an event in VB.NET

    - by serhio
    I havea a UserControl1 (in witch I have an Label1) in Form1. I want to catch the MouseDown event from label and send it like from UserControl I do: Public Class UserControl1 Shadows Custom Event MouseDown As MouseEventHandler AddHandler(ByVal value As MouseEventHandler) AddHandler Label1.MouseDown, value End AddHandler RemoveHandler(ByVal value As MouseEventHandler) RemoveHandler Label1.MouseDown, value End RemoveHandler RaiseEvent(ByVal sender As Object, ByVal e As MouseEventArgs) 'RaiseMouseEvent(Me, e) ??? ' End RaiseEvent End Event End Class However, when I set in the Form1 the UserControl Private Sub UserControl11_MouseDown(ByVal sender As System.Object, _ ByVal e As System.Windows.Forms.MouseEventArgs) _ Handles UserControl11.MouseDown MessageBox.Show(sender.GetType.Name) 'here I have 'Label', want 'UserControl' End Sub

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  • Problem with GwtUpload on GAE

    - by weesilmania
    I'm using GwtUpload to upload images on GAE. The problem is that the images seem to get much bigger when I move them into a blob. I've noticed the same for simple text fields and in that case I've realised that some weirdo characters are being appended to the end of the field values (encoding right?). Can anyone help? public class ImageUploadServlet extends AppEngineUploadAction { /** * Maintain a list with received files and their content types */ Hashtable<String, File> receivedFiles = new Hashtable<String, File>(); Hashtable<String, String> receivedContentTypes = new Hashtable<String, String>(); private Objectify objfy; public ImageUploadServlet() { ObjectifyService.register(Thumbnail.class); objfy = ObjectifyService.begin(); System.out.println("ImageUploadServlet init"); } /** * Override executeAction to save the received files in a custom place and * delete this items from session. */ @Override public String executeAction(HttpServletRequest request, List<FileItem> sessionFiles) throws UploadActionException { Thumbnail t = new Thumbnail(); for (FileItem item : sessionFiles) { //CacheableFileItem item = (CacheableFileItem)fItem; if (false == item.isFormField()) { System.out.println("the name 1st:" + item.getFieldName()); try { // You can also specify the temporary folder InputStream imgStream = item.getInputStream(); Blob imageBlob = new Blob(IOUtils.toByteArray(imgStream)); t.setMainImage(imageBlob); System.out.println("blob: " + t.getMainImage()); } catch (Exception e) { throw new UploadActionException(e.getMessage()); } } else { System.out.println("the name 2nd:" + item.getFieldName()); String name = item.getFieldName(); String value; try { InputStream is = item.getInputStream(); StringWriter writer = new StringWriter(); IOUtils.copy(is, writer,"UTF-8"); value = writer.toString(); writer.close(); System.out.println("parm name: " + name); System.out.println("parm value: " + value + " **" + value.length()); System.out.println(item.getContentType()); if (name.equals("thumb-name")) { t.setName(value); } } catch (IOException e) { // TODO Auto-generated catch block System.out.println("Error"); e.printStackTrace(); } } removeSessionFileItems(request); } objfy.put(t); return null; } As an example the size of the image is 20kb, and the lib has some debugging that confirms that this is the case when it's uploading the file but the blob ends up being over 1 MB. Wes

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  • Wordpress Trackbacks Not Being Applied

    - by Dustin Digmann
    I am using Wordpress 2.9.1. I recently noticed the trackbacks are not being sent - internal or external. I see two issues I would like to solve. 1) My site has a default, global ping hub which it should notify. This value is not being set into the 'to_ping' value in the *_post table. 2) When I manually enter a trackback in the post, I notice the 'to_ping' value is properly set. It never sends the ping though. The 'pinged' value is always empty. With older versions of WP, this seemed to work automatically.

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  • Same jQuery code returns two different results – Submit Button Text

    - by Lijo
    I have two jQuery codes - http://jsfiddle.net/Lijo/CXGX7/7/ and http://jsfiddle.net/Lijo/CXGX7/8/ . The first code returns undefined whereas the second code returns text of button. QUESTIONS What is the reason for this difference in result? Why is the first code not returning expected text of button? Note: I verified that both are using same version of jQuery (by an alert of jQuery) alert($.fn.jquery); CODE <html xmlns="http://www.w3.org/1999/xhtml"> <head><title> </title> <script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.8.1.js"></script> <script type="text/javascript"> alert($('.myButton').attr("value")); </script> </head> <body> <form method="post" action="Test.aspx" id="form1"> <div class="aspNetHidden"> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTE0MDM4MzYxMjNkZMycQvsYQ+GPFsQHoQ8j/8vEo2vQbqkhfgPc60kxXaQO" /> </div> <div class="aspNetHidden"> <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWAwKqxqqrCgLi/JazDQKM54rGBqgaroRQTXJkD1LyUlVxAmLRCNfTGVe73swQBMemBtvN" /> </div> <div> <input name="txtEmpName" type="text" id="txtEmpName" /> <input type="submit" name="Button1" value="Submit" id="Button1" class="myButton" /> </div> </form> </body> </html> REFERENCES Retrieve Button value with jQuery How to determine and print jQuery version?

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  • Chrome Extension Manifest 'Matches'

    - by Aristotle
    I'm trying my hands at a simple Chrome Extension, but am running into a problem with providing a value for the matches array in my content_scripts. { "name": "My Extension", "version": "1.0", "description": "My Extension Experiment", "browser_action": { "default_icon": "icon.png", "default_title": "Ext", "default_popup": "popup.html" }, "content_scripts": { "matches": ["http://*"], "js": ["scripts.js"] } } When I try to load this extension into Chrome, I get the following message: Could not load extension from 'C:\Users\foo\Desktop\Extensions\bar'.Invalid value for 'content_scripts'. I cannot see what is "invalid" about my value though. What I'm trying to do is match every URL, so my extension can manipulate the DOM (via javascript within scripts.js) of any page it is ran on. Am I missing something, going about this all wrong, or what? update After posting this question, I did notice that the Google example was slightly different than mine, so I modified my code a bit to reflect their syntax: "content_scripts": [{ "matches": ["http://*"], "js": ["scripts.js"] }] That being said, I still get the following error when trying to load my extension: Could not load extension from 'C:\Users\foo\Desktop\Extensions\bar'. Invalid value for 'content_scripts[0].matches[0]'.

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  • KeyPressed Event

    - by Asim Sajjad
    My Problem is that I want to check if the Arrow up or down key is press then I want to increment or decrement value in the textbox control. I have registered keyup event but I have to release the arrow up key in order to change the value, What I want is if User pressed up arrow key then it will increment the value until user release up arrow key and same for the down arrow key. Any idea?

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  • XML - how to use namespace prefixes

    - by Asbie
    I have this XML at http://localhost/file.xml: <?xml version="1.0" encoding="utf-8"?> <val:Root xmlns:val="http://www.hw-group.com/XMLSchema/ste/values.xsd"> <Agent> <Version>2.0.3</Version> <XmlVer>1.01</XmlVer> <DeviceName>HWg-STE</DeviceName> <Model>33</Model> <vendor_id>0</vendor_id> <MAC>00:0A:DA:01:DA:DA</MAC> <IP>192.168.1.1</IP> <MASK>255.255.255.0</MASK> <sys_name>HWg-STE</sys_name> <sys_location/> <sys_contact> HWg-STE:For more information try http://www.hw-group.com </sys_contact> </Agent> <SenSet> <Entry> <ID>215</ID> <Name>Home</Name> <Units>C</Units> <Value>27.7</Value> <Min>10.0</Min> <Max>40.0</Max> <Hyst>0.0</Hyst> <EmailSMS>1</EmailSMS> <State>1</State> </Entry> </SenSet> </val:Root> I am trying to read this from my c# code: static void Main(string[] args) { var xmlDoc = new XmlDocument(); xmlDoc.Load("http://localhost/file.xml"); XmlElement root = xmlDoc.DocumentElement; // Create an XmlNamespaceManager to resolve the default namespace. XmlNamespaceManager nsmgr = new XmlNamespaceManager(xmlDoc.NameTable); nsmgr.AddNamespace("val", "http://www.hw-group.com/XMLSchema/ste/values.xsd"); XmlNodeList nodes = root.SelectNodes("/val:SenSet/val:Entry"); foreach (XmlNode node in nodes) { string name = node["Name"].InnerText; string value = node["Value"].InnerText; Console.Write("name\t{0}\value\t{1}", name, value); } Console.ReadKey(); } } Problem is that the node is empty. I understand this is a common newbie problem when reading XML, still not able to solve what I am doing wrong, probably something with the Namespace "val" ?

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  • My Ruby Code: How can I improve? (Java to Ruby guy)

    - by steve
    Greetings, I get the feeling that I'm using ruby in an ugly way and possibly missing out on tonnes of useful features. I was wondering if anyone could point out a cleaner better way to write my code which is pasted here. The code itself simply scrapes some data from yelp and processes it into a json format. The reason I'm not using hash.to_json is because it throws some sort of stack error which I can only assume is due to the hash being too large (It's not particularly large). Response object = a hash text = the output which saves to file Anyways guidance appreciated. def mineLocation client = Yelp::Client.new request = Yelp::Review::Request::GeoPoint.new(:latitude=>13.3125,:longitude => -6.2468,:yws_id => 'nicetry') response = client.search(request) response['businesses'].length.times do |businessEntry| text ="" response['businesses'][businessEntry].each { |key, value| if value.class == Array value.length.times { |arrayEntry| text+= "\"#{key}\":[" value[arrayEntry].each { |arrayKey,arrayValue| text+= "{\"#{arrayKey}\":\"#{arrayValue}\"}," } text+="]" } else text+="\"#{arrayKey}\":\"#{arrayValue}\"," end } end end

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  • How to convert different local float format to standard float format, using zend?

    - by Linto davis
    my local is 'en_IN' (ie Zend_Registry::get('Zend_Locale')) I have to convert the local value to standard float number format for example 1,235.23 = 1235.23 3.23 = 3.23 I have used the following code Zend_Locale_Format::getFloat($value, array('locale' = Zend_Registry::get('Zend_Locale'))); it working fine for 1,235.23, and i get the answer 1235.23. But when i give 3.23 , i get the error on this code And the error shown as 'No localized value in 3.23 found', This issue is happening in the browser opera, when we set the language is English(IN)(en-IN)

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  • notications pop up in user side

    - by user2931015
    i try to show notification as a pop up. like when admin login and through his account he send notification to user i add this html in admin form like this.. <asp:Button ID="notic" runat="server" Text="Send" onclick="Button1_Click" /> <br /> <input class="add_message" type="text" value="type your message" name="add_message"></input> <input type="button" value="add message" onclick="sNotify.addToQueue($('.add_message').attr('value'))"/> Then when admin click on button then notification send to users account like when any user login then he/she able to see pop ups in user form I call this java script in page load like this .. ClientScript.RegisterStartupScript(GetType(), "Javascript", "javascript:sNotify.addToQueue($('.add_message').attr('value'))();", true); it works like when i login as a admin and click on button then notification in his own page .. but i want to show this notifications in user form. so how to solve it?

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  • Floating point precision and physics calculations

    - by Vee
    The gravity Vector2 in my physics world is (0; 0.1). The number 0.1 is known to be problematic, since "it cannot be represented exactly, but is approximately 1.10011001100110011001101 × 2-4". Having this value for the gravity gives me problems with collisions and creates quite nasty bugs. Changing the value to 0.11 solves these problems. Is there a more elegant solution that doesn't require changing the value at all?

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  • == Operator and operands

    - by rahul
    I want to check whether a value is equal to 1. Is there any difference in the following lines of code Evaluated value == 1 1 == evaluated value in terms of the compiler execution

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  • How do I query SQLite Database in Android?

    - by kunjaan
    I successfully created the Database and inserted a row however I cannot Query it for some reason. My Droid crashes everytime. String DATABASE_NAME = "myDatabase.db"; String DATABASE_TABLE = "mainTable"; String DATABASE_CREATE = "create table if not exists " + DATABASE_TABLE + " ( value VARCHAR not null);"; SQLiteDatabase myDatabase = null; myDatabase = openOrCreateDatabase(DATABASE_NAME, Context.MODE_PRIVATE, null); myDatabase.execSQL(DATABASE_CREATE); // Create a new row of values to insert. ContentValues newValues = new ContentValues(); // Assign values for each row. newValues.put("value", "kunjan"); // Insert the row into your table myDatabase.insert(DATABASE_TABLE, null, newValues); String[] result_columns = new String[] { "value" }; Cursor allRows = myDatabase.query(true, DATABASE_TABLE, result_columns, null, null, null, null, null, null); if (allRows.moveToFirst()) { String value = allRows.getString(1); TextView foo = (TextView) findViewById(R.id.TextView01); foo.setText(value); } allRows.close(); myDatabase.close();

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  • Finding parent class and id

    - by Breezer
    Well after countless tries i can't get this work? <script type="text/javascript"> $("td input").focusout(function() { var column = $(this).parent('td').attr('class'); var row = $(this).parent('tr').attr('id'); $('#dat').HTML(row+" "+column); }); </script> And the html looks like this <tr class="numbers" id="1"> <td class="a" align="right">1</td> <td class="b"><input class="input" type="text" value=""/></td> <td class="c"><input class="input" type="text" value=""/></td> <td class="d"><input class="input" type="text" value=""/></td> <td class="e"><input class="input" type="text" value=""/></td> <td class="f">0</td> <td class="g"><input class="input" type="text" value=""/></td> </tr> can anyone point me to the right direction on what might be wrong? thanks in advance regards

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