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  • C# simpler run time generics

    - by Hellfrost
    Is there a way to invoke a generic function with a type known only at run time? I'm trying to do something like: static void bar() { object b = 6; string c = foo<typeof(b)>(); } static string foo<T>() { return typeof (T).Name; } Basically I want to decide on the type parameter only at run time, but the function I'm calling depends on the type parameter. Also I know this can be done with reflections... but it's not the nicest solution to the problem... I'm sort of looking for dynamic features in C#...

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  • Creating a method that is simultaneously an instance and class method

    - by Mike Axiak
    In Python, I'd like to be able to create a function that behaves both as a class function and an instance method, but with the ability to change behaviors. The use case for this is for a set of serializable objects and types. As an example: >>> class Thing(object): #... >>> Thing.to_json() 'A' >>> Thing().to_json() 'B' I know that given the definition of classmethod() in funcobject.c in the Python source, this looks like it'd be simple with a C module. Is there a way to do this from within python? Thanks!

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  • Linking to a C library compiled as C++

    - by Jacob
    I'm in linker paradise now. I have a C library which only compiles in Visual C++ (it probably works in gcc) if: I compile it as C++ code Define __cplusplus which results in all the declarations being enclosed in extern "C" { } So, by doing this I have a static library called, say, bsbs.lib Now, I have a C++ project called Tester which would like to call function barbar in declared in bsbs.h. All goes fine, until I try to link to bsbs.lib where I get the all-too-familiar: Tester.obj : error LNK2001: unresolved external symbol _foofoo And it always seems to be foofoo which cannot be resolved regardless of which function I call in Tester (barbar or anything else).

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  • [PHP] preg_replace: replacing using %

    - by Juan
    Hi all, I'm using the function preg_replace but I cannot figure out how to make it work, the function just doesn't seem to work for me. What I'm trying to do is to convert a string into a link if any word contains the % (percentage) character. For instance if I have the string "go to %mysite", I'd like to convert the mysite word into a link. I tried the following... $data = "go to %mysite"; $result = preg_replace('/(^|[\s\.\,\:\;]+)%([A-Za-z0-9]{1,64})/e', '\\1%<a href=#>\\2</a>', $data); ...but it doesn't work. Any help on this would be much appreciated. Thanks Juan

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  • keypress event not being triggered only at start and end of text field in Firefox (JQuery)

    - by rlivsey
    I'm listening for keypress events on an input field with delegation. For some reason, Firefox doesn't trigger the delegated event for cursor UP when at the start of the field, or cursor DOWN when at the end. LEFT and RIGHT work as expected all the time. Directly binding an event listener to the field works fine, so it has to be something to do with delegation. Does anyone know if this is a know issue, I couldn't find anything on Google/forums etc..? $("div").delegate(":input", "keypress", function(e){ // doesn't get triggered }); $("div :input").bind("keypress", function(e){ // gets triggered fine }); Here's a demo which shows the issue - http://livsey.org/jquery.delegation.html

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  • how to get mxml file in ActionScript class

    - by nemade-vipin
    hello friend I want to refer my mxml file into Actionscript class.My code is :- Mxml file is :- var User:Authentication; User = new Authentication(); User.authentication(); } ]] <mx:Panel width="100%" height="100%" layout="absolute"> <mx:TabNavigator width="100%" height="100%" id="viewstack2"> <mx:Form label="Login Form" id="loginform"> <mx:FormItem label="Mobile no:" creationPolicy="all"> <mx:TextInput id="mobileno"/> </mx:FormItem> <mx:FormItem label="Password:" creationPolicy="all"> <mx:TextInput displayAsPassword="true" id="password" /> </mx:FormItem> <mx:FormItem> <mx:Button label="Login" click="authentication()"/> </mx:FormItem> </mx:Form> <mx:Form label="Child List"> <mx:Label width="100%" color="blue" text="Select Child."/> </mx:Form> </mx:TabNavigator> </mx:Panel> Action script class is package SBTSBusineesObject { import generated.webservices.*; import mx.collections.ArrayCollection; import mx.controls.Alert; import mx.rpc.events.FaultEvent; public class Authentication { [Bindable] private var childName:ArrayCollection; [Bindable] private var childId:ArrayCollection; private var photoFeed:ArrayCollection; private var arrayOfchild:Array; private var newEntry:GetSBTSMobileAuthentication; public var user:SBTSWebService; public var mxmlobj:SBTS =null; public function authentication():void { user = new SBTSWebService(); mxmlobj = new SBTS(); if(user!=null) { user.addSBTSWebServiceFaultEventListener(handleFaults); user.addgetSBTSMobileAuthenticationEventListener(authenticationResult); newEntry = new GetSBTSMobileAuthentication(); if(newEntry!=null) { if(mxmlobj != null) { newEntry.mobile = mxmlobj.mobileno.text ; newEntry.password=mxmlobj.password.text; } user.getSBTSMobileAuthentication(newEntry); } } } public function handleFaults(event:FaultEvent):void { Alert.show("A fault occured contacting the server. Fault message is: " + event.fault.faultString); } public function authenticationResult(event:GetSBTSMobileAuthenticationResultEvent):void { if(event.result != null && event.result._return>0) { if(event.result._return > 0) { var UserId:int = event.result._return; if(mxmlobj != null) { mxmlobj.loginform.enabled = false; mxmlobj.viewstack2.selectedIndex=1; } } else { Alert.show("Authentication fail"); } } } } }

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  • Sending mass email using PHP

    - by Alan
    I am currently writing a music blog. The administrator posts a new article every 2-3 days. Once the administrator posts an article, a mass email will be sent to around 5000 subscribers immediately. What is the best way to implement the mass mail feature? Does the following function work? function massmail() { $content = '...'; foreach ($recipients as $r) { $_content = $content . '<img src="http://xxx/trackOpenRate.php?id='.$r.'">'; mail($r, 'subject', $_content); } } Another question: If all 5000 subscribers are using Yahoo Mail, will Yahoo treat it as a DDOS attack and block the IP address of my SMTP server?

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  • java System.nanoTime is really slow. Is it possible to implement a high performance java profiler?

    - by willpowerforever
    I did a test and found the overhead of a function call to System.nanoTime() is at least 500 ns on my machine. Seemed that it is very hard to have a high performance java profiler. For enterprise software, suppose a function takes about 350 seconds and has 12,500,000,000 times of method calls. Therefore, the number of calls to System.nanoTime() is: 12,500,000,000 * 2 = 25,000,000,000 (one for start timestamp, one for end timestamp) And the overhead of System.nanoTime in total is: 500 ns * 25,000,000,000 = 500 * 25000 s = 12500000s. Note: all data from real case. Any better way to acquire the timestamp?

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  • How do I disable or enable 2nd dropdownlist in aspx based on selected choice of the 1st dropdownlist

    - by fzshah76
    I am having a problem with disabling DropDownList based on the chice of 1st DropDownList, there is no post back occuring, and it is a template based web app here is the current code: <script type="text/javascript"> $(function() { var dropDownList1 = $('#<%= ddlUserType.ClientID %>'); var dropDownList2 = $('#<%= ddlMember.ClientID %>'); dropDownList1.change(function(e) { if ( jQuery("#ddlUserType").val() != "ETOC") dropDownList2.removeAttr('disabled'); e.preventDefault(); else dropDownList2.removeAttr('enabled'); e.preventDefault(); } } ); </script> what is happening now is page is blank and if I remove the above code everything shows, where I am going wrong, any help would be much appreciated.

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  • Problem with Postgres FOR LOOP

    - by user341831
    Hi all, Ich have a problem in postgres function: CREATE OR REPLACE FUNCTION linkedRepoObjects(id bigint) RETURNS int AS $$ DECLARE catNumber int DEFAULT 0; DECLARE cat RECORD; BEGIN WITH RECURSIVE children(categoryid,category_fk) AS ( SELECT categoryid, category_fk FROM b2m.category_tab WHERE categoryid = 1 UNION ALL SELECT c1.categoryid,c1.category_fk FROM b2m.category_tab c1, children WHERE children.categoryid = c1.category_fk ) FOR cat IN SELECT * FROM children LOOP IF EXISTS (SELECT 1 FROM b2m.repoobject_tab WHERE category_fk = cat.categoryid) THEN catNumber = catNumber +1 END IF; END LOOP; RETURN catNumber; END; $$ LANGUAGE 'plpgsql'; I've got error: FEHLER: Syntaxfehler bei »FOR« LINE 1: ...dren WHERE children.categoryid = c1.category_fk ) FOR $2 I... I'm a newbee in Postgres. Please help. Thanx in advance

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  • fb:comments does not showing Log out link

    - by mahfuz05
    fb.comments does not showing Log out link here is my code < fb:comments xid="mahfuz" canpost="true" candelete="false" > < /fb:comments> here is JS SDK code <div id="fb-root"></div> <script type="text/javascript"> window.fbAsyncInit = function() { FB.init({appId: 'my app id', status: true, cookie: true, xfbml: true}); }; (function() { var e = document.createElement('script'); e.async = true; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; document.getElementById('fb-root').appendChild(e); }()); </script>

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  • R: How can I use apply on rows of a data.frame and get out $column_name?

    - by John
    I'm trying to access $a using the following example: df<-data.frame(a=c("x","x","y","y"),b=c(1,2,3,4)) > df a b 1 x 1 2 x 2 3 y 3 4 y 4 test_fun <- function (data.frame_in) { print (data.frame_in[1]) } I can now access $a if I use an index for the first column: apply(df, 1, test_fun) a "x" a "x" a "y" a "y" [1] "x" "x" "y" "y" But I cannot access column $a with the $ notation: error: "$ operator is invalid for atomic vectors" test_fun_2 <- function (data.frame_in) { print (data.frame_in$a) } >apply(df, 1, test_fun_2) Error in data.frame_in$a : $ operator is invalid for atomic vectors Is this not possible?

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  • setting actionscript 3 superclass variables

    - by jedierikb
    In AS3, if I have a class such: public class dude { //default value for a dude protected var _strength:Number = 1; public function dude( ):void { super( ); //todo... calculate abilities of a dude based on his strength. } } and a subclass public class superDude extends dude { public function superDude( ):void { _strength = 100; super( ); trace( "strength of superDude: " + _strength ); } } This will trace strength of superDude is 1. I expected the variable I set in the subclass (prior to calling the superclass constructor) to remain. Is there a way to assign class variables in subclass constructors which are not over-written by the superclass construtor? Or should I pass them up as constructor variables?

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  • PHP OOP: Method Chaining

    - by Isis
    I have the following code, <?php class Templater { static $params = array(); public static function assign($name, $value) { self::$params[] = array($name => $value); } public static function draw() { self::$params; } } $test = Templater::assign('key', 'value'); $test = Templater::draw(); print_r($test); How can I alter this script so I could use this? $test = Templater::assign('key', 'value')->assign('key2', 'value2')->draw(); print_r($test);

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  • [Simple] Beginner AJAX script not working, stuck on opening XMLHttpRequest

    - by Julian H. Lam
    Hopefully, this question isn't too juvenile to ask - but here goes: I'm trying to learn AJAX, and I'm stuck on a simple content-fetch. Here is my code: request = getHTTPObject(); function useHttpResponse() { if (request.readyState == 4) { document.getElementById("p").innerHTML = request.responseText; } } function update_p() { request.open("GET",content.html,true); request.onreadystatechange = useHttpResponse; } getHTTPObject is correctly defined, and returns a proper XMLHttpObject. As you probably guessed from the excerpt, the element I am trying to update is id'd "p". It calls the script correctly when a button is clicked, no problem there. The script seems to stop at line 8, at request.open. There's no error, and the script silently ignores anything afterward. I don't think I've missed anything, but of course, I probably did. Where did I go wrong? Thanks!

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  • Anything wrong with this code?

    - by Scott B
    Do I actually have to return $postID in each case, in the code below? This is code required for capturing the values of custom fields I've added to the WP post and page editor. Got the idea from here: http://apartmentonesix.com/2009/03/creating-user-friendly-custom-fields-by-modifying-the-post-page/ add_action('save_post', 'custom_add_save'); function custom_add_save($postID){ if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) { return $postID; } else { // called after a post or page is saved if($parent_id = wp_is_post_revision($postID)) { $postID = $parent_id; } if ($_POST['my_customHeader']) { update_custom_meta($postID, $_POST['my_customHeader'], 'my_customHeader'); } else { update_custom_meta($postID, '', 'my_customHeader'); } if ($_POST['my_customTitle']) { update_custom_meta($postID, $_POST['my_customTitle'], 'my_customTitle'); } else { update_custom_meta($postID, '', 'my_customTitle'); } } return $postID; //IS THIS EVEN NECESSARY? } function update_custom_meta($postID, $newvalue, $field_name) { // To create new meta if(!get_post_meta($postID, $field_name)){ add_post_meta($postID, $field_name, $newvalue); }else{ // or to update existing meta update_post_meta($postID, $field_name, $newvalue); } }

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  • confused of $this in cakePHP

    - by kwokwai
    Hi all, I got a few lines of codes in a Model in cakePHP 1.26: function beforeSave() { $this->data['User']['pswd'] = md5($raw['User']['pswd']); return true; } // this beforeSave() works The code above has been tested and it is working in my database. Yet, I am not sure if I can understand it well, so, I re-wrote the code in other way, and it just failed to work then. function beforeSave() { $raw=$this->data; $raw['User']['pswd'] = md5($raw['User']['pswd']); return true; } // this beforeSave() failed to work Why the second method can not work?

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  • visual studio 2008 linker error

    - by ravi
    In visual studio 2008, I have created a static dll called test_static.dll. I am trying to call this from one application. I have included this dll in source files folder and the header file related to it in headers folder. When i am running the application I am getting following liking error. Please give me a solution. error LNK2019: unresolved external symbol "struct morph_output * __cdecl morpho_data(struct morph_input *)" (?morpho_data@@YAPAUmorph_output@@PAUmorph_input@@@Z) referenced in function _wmain 1D:\test_app\Debug\test_app.exe : fatal error LNK1120: 1 unresolved externals 1Build log was saved at "file://d:\test_app\test_app\Debug\BuildLog.htm" Here test_app is application that is using static dll. and morpho_data is the dll function which is taking input as structure and returning another structure.

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  • Jquery cant get dynamic data

    - by Napoleon Wai Lun Wong
    i am a noob to using the jQuery i have a problem about the Uncaught SyntaxError: Unexpected token i am using the 1.9.0 version of jqery i am creating a dynamic number of record, each record would create a "tr" in a table ,also i want to add some dynamic coding into the textbox part of Html coding : <-tbody<-tr id="row_1"<-input id="1" name="collections[appearance][headersubcolor][entity_id1][name]" value="0" class="Root Catalog input-text" type="text" Click inside to change a color of each Category <-tr id="row_2"<-td class="label"<-td class="value"<-input id="2" name="collections[appearance][headersubcolor][entity_id2][name]" value="0" class="Default Category input-text" type="text".... jQuery coding : $('tr[id^="row_"]'.each(function(){ var rowid = parsInt(this.id.replace("row_","")); console.lof("id:"+ rowid); var ??? = new jscolor.color(document.getElementById('???'), {}) }); $('tr[id^="row_"]'.each(function() <--- i cant getting the DATA

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  • Problem with keyPress in Mozilla

    - by sudhansu
    I am usingtextarea to get some inputs. A label shows the updated chars left. It works fine in IE, but in FF 3.0, after reaching the max limit, it doesn't allow to delete or backspace key. I am using a javascript function on keypress event of the textarea. the javascript code is function checkLength() { var opinion = document.getElementById('opinion').value; if(opinion.length > 50) alert("You have reached the mas limit."); else document.getElementById('limit').innerHTML = 50 - opinion.length; } while on the page, i am using this <label id="limit">50 </label> <textarea id="opTxtArea" onkeypress="javascript:checkLength();"></textarea> Everything is working fine. The problem arises in FF, when the inputs reach the max limit, the message is displayed, but it doesn't allow to delete or backspace.

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  • SoundPool.load() and FileDescriptor from file

    - by Hans
    I tried using the load function of the SoundPool that takes a FileDescriptor, because I wanted to be able to set the offset and length. The File is not stored in the Ressources but a file on the storage card. Even though neither the load nor the play function of the SoundPool throw any Exception or print anything to the console, the sound is not played. Using the same code, but use the file path string in the SoundPool constructor works perfectly. This is how I have tried the loading (start equals 0 and length is the length of the file in miliseconds): FileInputStream fileIS = new FileInputStream(new File(mFile)); mStreamID = mSoundPool.load(fileIS.getFD(), start, length, 0); mPlayingStreamID = mSoundPool.play(mStreamID, 1f, 1f, 1, 0, 1f); If I would use this, it works: mStreamID = mSoundPool.load(mFile, 0); mPlayingStreamID = mSoundPool.play(mStreamID, 1f, 1f, 1, 0, 1f); Any ideas anyone? Thanks

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  • please help me to find out where i am doing mistake in this code? i wnat retieve the value that i am

    - by user309381
    function reload(form) { var val = $('seltab').getValue(); new Ajax.Request('Website.php?cat=' +escape(val), { method:'get', onSuccess: function(transport){ var response = transport.responseText ; $("MyDivDB").innerHTML = transport.responseText ; alert("Success! \n\n" + response); }, onFailure: function(){ alert('Something went wrong...') } }); } </script> </head> title author pages $con = mysql_connect($dbhostname,$dbuserid,$dbpassword); if(!$con) { die ("connection failed".mysql_error()); } $db = mysql_select_db($dbname,$con); if(!$db) { die("Database is not selected".mysql_error()); } $query ="SELECT * FROM books NATURAL JOIN authors" ; $result = mysql_query($query); if(!$query) { die("Database is not query".mysql_error()); } while($row = mysql_fetch_array($result,MYSQL_ASSOC)) { $title = $row["title"]; $author = $row["author"]; $page = $row["pages"]; echo "<tr>"; echo "<td>$title</td>"; echo "<td>$author</td>"; echo "<td>$page</td>"; echo "</tr>"; } print "</table>"; echo "<select id = seltab onchange = 'reload(this.form)'>"; $querysel = "SELECT title_id,author FROM authors NATURAL JOIN books"; $result1 = mysql_query($querysel) ; while($rowID = mysql_fetch_assoc($result1)) { $TitleID = $rowID['title_id']; $author = $rowID['author']; print "<option value = $author>$author\n"; print "</option>"; } print "</select>"; ? Wbsite.php

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  • Dojo slider: update value dynamically

    - by xApple
    I am building an application where the user browses certain objects by scrolling and zooming. To change the zoom level I have successfully implemented a "dijit.form.HorizontalSlider" object. Every time the user changes the position of the silder, I can catch the "onChange" call and do something with that. However, the user can also zoom-in by double clicking inside the view zone, at which point the slider should change position automatically to reflect the new zoom level. My question is the following: what function or method should I call in my javascript to update the position of a dojo silder ? Here is the code that creates the silder object: var zoomSlider = new dijit.form.HorizontalSlider({ name: "zoom_slider", id: "zoom_slider", value: 0, minimum: 0, maximum: 19, discreteValues: 20, intermediateChanges: false, style: "width: 160px;", onChange: function(value) { brwsr.view.zoomTo(value); } }, "zoom_slider"); navbox_silder.appendChild(zoomSlider.domNode);

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  • Cannot export a fusionchart with 'Embedding Charts Using <OBJECT>/<EMBED> Tags'

    - by zoom_pat277
    I am trying to export a fusion chart created using 'Embedding Charts Using / Tags'. Export works just perfect with the right click (on the chart) and chose a pdf to export. But I am not able to make this work via javascript. I have a button outside the chart which upon clicking calls the function below function myexport() { var object = getChartFromId('myChartid'); if( object.hasRendered() ) object.exportChart({exportFormat: 'PDF'}); } the object above returned is null and this fails on the next line here is the full prototype <html> <head> <title>My Chart</title> <script type="text/javascript" src="fusionCharts.debug.js"></script> <script type="text/javascript" src="fusionChartsExportComponent.js"></script> <script type="text/javascript"> function ExportMyChart() { var cObject = getChartFromId('Column3D'); if( cObject.hasRendered() ) cObject.exportChart({exportFormat: 'PDF'}); } </script> </head> <body> <object width="400" height="400" id="Column3D" classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" > <param name="testname" value="Column3D.swf" /> <param name="FlashVars" value="&dataURL=testData.xml&chartWidth=400&chartHeight=300&DOMId=myChart1&registerWithJS=1&debugMode=0"> <param name="quality" value="high" /> <embed src="Column3D.swf" flashVars="&dataURL=testData.xml&chartWidth=400&chartHeight=300&DOMId=myChart1&registerWithJS=1&debugMode=0" width="400" height="300" name="Column3D" quality="high" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" /> </object> <!-- We also create a DIV to contain the FusionCharts client-side exporter component --> <div id="holderDiv" align="center">FusionCharts Export Handler Component</div> <script type="text/javascript"> var myExportComponent = new FusionChartsExportObject("testExporter1", "FCExporter.swf"); //Render the exporter SWF in our DIV fcexpDiv myExportComponent.Render("holderDiv"); </script> <input type="button" value="Export My Chart" onclick="ExportMyChart()" />

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  • Cake PHP redirect with parameters in url

    - by megaboss98
    I have a page that I want to redirect to that requires parameters in the URL: http://www.mysite.com/myController/myAction/param1:val1/param2:val2 I know that there is a Cake PHP redirect function for redirecting that works as follows: $this->redirect(array("controller" => "myController", "action" => "myAction", $data_can_be_passed_here), $status, $exit); How do I add the parameters that I want as part of the url using the above function? I would think that there might be another element that I could add to array so that I can pass along "param1:val1" and "param2:val2". Any help would be greatly appreciated!

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