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• Re-ordering C++ template functions

  - by DeadMG

  In C++, I have a certain template function that, on a given condition, calls a template function in another class. The trouble is that the other class requires the full definition of the first class to be implemented, as it creates the second class and stores them and manages them in similar fashions. The trouble is that naturally, they fall as one class, and thus have some tight interop, except that I need them to be two classes for threading reasons. A sort of, master for all threads, one child per thread, system. Any advice on how this can be implemented?

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• Deselect all options in Multiple Select with 1 option

  - by Shaded

  Hello, I currently have the following js code function clearMulti(option) { var i; var select = document.getElementById(option.parentNode.id); for(i=1;i<select.options.length;i++) { select.options[i].selected=false; } } and function clearAllOpt(select) { select.options[0].selected = false; } The first one deselects all options in the multiple select when called and the second clears the first option whenever anything else is selected. The need for this is that the first option is for All. This all works fine and dandy in FF, but in IE8 nothing happens... any suggestions on how to get this to work in both? Thanks in advance.

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• Any good idioms for error handling in straight C programs?

  - by Will Hartung

  Getting back in to some C work. Many of my functions look like this: int err = do_something(arg1, arg2, arg3, &result); With the intent the result gets populated by the function, and the return value is the status of the call. The darkside is you get something naive like this: int err = func1(...); if (!err) { err = func2(...); if (!err) { err = func3(...); } } return err; I could macro it I suppose: #define ERR(x) if (!err) { err = (x) } int err = 0; ERR(func1(...)); ERR(func2(...)); ERR(func3(...)); return err; But that only works if I'm chaining function calls, vs doing other work. Obviously Java, C#, C++ have exceptions that work very well for these kinds of things. I'm just curious what other folks do and how other folks do error handling in their C programs nowadays.

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• How do you send an array as part of an (jquery) ajax request

  - by Ankur

  I tried to send an array as part of an ajax request like this: var query = []; // in between I add some values to 'query' $.ajax({ url: "MyServlet", data: query, dataType: "json", success: function(noOfResults) { alert(noOfResults); } }); } I wanted to see what I get back in the servlet, so I used this line: System.out.println(request.getParameterMap().toString()); Which returned {} suggesting an empty map. Firebug tells me I am getting a 400 bad request error If I send a queryString like attribute=value as the 'data' then everything works fine, so it has to do with not being able to send an array as is. What do I have to do to get that data into the servlet for further processing. I don't want to pull it out and turn it into a queryString in the JS if I can avoid it. EDIT: I used the .serializeArray() (jQuery) function before sending the data. I don't get the 400 but nothing useful is being sent through.

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• f# string.Format

  - by mamu

  I am writing my first f# library i am trying to use string.Format and it complains that no such function Is it not available or am i doing something wrong

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• Beginner C++ Question

  - by Donal Rafferty

  I have followed the code example here toupper c++ example And implemented it in my own code as follows void CharString::MakeUpper() { char* str[strlen(m_pString)]; int i=0; str[strlen(m_pString)]=m_pString; char* c; while (str[i]) { c=str[i]; putchar (toupper(c)); i++; } } But this gives me the following compiler error CharString.cpp: In member function 'void CharString::MakeUpper()': CharString.cpp:276: error: invalid conversion from 'char*' to 'int' CharString.cpp:276: error: initializing argument 1of 'int toupper(int)' CharString.cpp: In member function 'void CharString::MakeLower()': This is line 276 putchar (toupper(c)); I understand that toupper is looking for int as a parameter and returns an int also, is that the problem? If so how does the example work?

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• IE8 Slide Toggle Issue

  - by jef2904

  Im having some trouble with jQuery's slideToggle function in IE8 for some reason the DIV its opening closes immediately after its opened heres the code im using $("h3 a").click(function(){ id = $(this).attr("href"); $(id).slideToggle("slow"); }); and the HTML <h3><a href="#promo-materials">Graphic and Pormotional Materials</a></h3> <div id="promo-materials" class="center gallery"> <a href="images/portfolio/bistro.png" rel="facebox"> <img src="images/portfolio/thumbs/bistro.png" alt="" /> </a> <a href="images/portfolio/direct-savings.png" rel="facebox"> <img src="images/portfolio/thumbs/direct-savings.png" alt="" /> </a> </div> Here is a link to the functional page it works in all other browsers including IE7

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• List with items returns empty

  - by Power-Mosfet

  I have created a simple List function but if I Loop through the List it's empty. It should not be! All, thank you for the input. problem solved // List function public class process_hook { public static List<string> pro_hook = list_all_processes(); protected static List<string> list_all_processes() { var list = new List<string>(); foreach (Process i in Process.GetProcesses(".")) { try { foreach (ProcessModule pm in i.Modules) { list.Add(pm.FileName); } } catch { } } return list; } } // call private void button1_Click(object sender, EventArgs e) { foreach (String _list in process_hook.pro_hook) { Console.WriteLine(_list); } }

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• How to pass a const unsigned char * from c++ to c#

  - by tzup

  So I have a function in unmanaged c++ that gets called when some text happens to have "arrived": #using <MyParser.dll> ... void dump_body(const unsigned char *Body, int BodyLen) { // Need to pass the body to DumpBody, but as what type? ... lMyParser::Parser::DumpBody(???); } DumpBody is a function defined in a C# DLL that should take one parameter of type? Body holds an array of characters (text) of length BodyLen. There's obviously some marshalling to be done here but I have no idea how. Please help.

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• Prevent double submission of forms in jQuery

  - by Adam

  I have an form that takes a little while for the server to process. I need to ensure that the user waits and does not attempt to resubmit the form by clicking the button again. I tried using the following jQuery code: <script type="text/javascript"> $(document).ready(function(){ $("form#my_form").submit(function(){ $('input').attr('disabled','disabled'); $('a').attr('disabled','disabled'); return true; }) }); </script> When I try this in Firefox everything gets disabled but the form is not submitted with any of the POST data it is supposed to include. I can't use jQuery to submit the form because I need the button to be submitted with the form as there are multiple submit buttons and I determine which was used by which one's value is included in the POST. I need the form to be submitted as it usually is and I need to disable everything right after that happens. Thanks!

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• Class views in Django

  - by Sebastjan Trepca

  Django view points to a function, which can be a problem if you want to change only a bit of functionality. Yes, I could have million keyword arguments and even more if statements in the function, but I was thinking more of an object oriented approach. For example, I have a page that displays a user. This page is very similar to page that displays a group, but it's still not so similar to just use another data model. Group also has members etc... One way would be to point views to class methods and then extend that class. Has anyone tried this approach or has any other idea?

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• TypeError: Result of expression 'printWindow' [undefined] is not an object.

  - by orangebrainer

  I'm trying to create hidden iframes in my page dynamically to load 3 other pages so that i can grab all the HTML and combine them into 1 in a new window. However i'm stuck at this. tHe frames are created fine. But whenever the javascript runs to the part of function openNewWindow() { var printWindow = window.open("",""); printWindow.document.open(); printWindow.document.write(HTMLfromFrames); printWindow.document.close(); } i get this error: TypeError: Result of expression 'printWindow' [undefined] is not an object. but if i generate a button to call this function seperately, it works fine. however i need it to run all in one click event Anybody has any idea what's wrong? Thanks!

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• Defautlt Contoller in CodeIgniter

  - by gregavola

  Hello everyone, I am wondering if there is any other configuration options for a default controller. For example - if I have a controller called "site" and I set the default controller in the following file: application/config/routes.php to: $route['default_controller'] = "site"; I should be able to go to http://localhost and that brings up the index(); function in the site controller. However, if I try to do go to http://localhost/index.php/index2 to load the index2(); function I get a 404 error. If i change the URL to http://localhost/index.php/site/index2 it works fine - but I thought already set the default controller. Is there any way around this? Any thoughts?

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• jQuery AJAX & an ASP.NET web service works locally but not remotely

  - by Alex

  Interesting one here. I have an ASP.NET 1.1 project that contains a web service in it. I'm using jQuery's AJAX functionality to call some services from the client. This is what my code looks like: $.ajax({ type: "POST", url: 'foo.asmx/functionName', data: 'foo1=' + foo1 + '&foo2=' + foo2, dataType: "xml", success: function(xml) { //do something with my xml data }, error: function(request, error){ //handle my error } }); This works great when I run the site from my IDE on localhost. However, when I deploy this site to any other server I get a parsererror error from jQuery. It does not appear to even call my service as I dropped in some code to write a log file to disk and it's not making it there. The same exact XML should be returned from both my localhost and the server I deployed to. Any ideas?

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• Jquery file format

  - by sarbe

  HI. I have multiple webpages. So I have a common external js file. And I have added this js file to every page. I have multiple check boxes in every page. And I have written the click event in the external, common js file. But I wonder how the js file should be? Currently I have written like this. $(document).ready(function() { $(".chk").click(function() { alert("hi"); }); }); But whenever I click a checkbox the click event is fired twice. it should be once. I dont know where is the error, is there any error in writing the js file? please comment.

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• jquery Hover and while loop

  - by DragoN

  i have a table of php with while loop to show the records i added a jquery hover to do that : if hovered it show a message in same row but the problem is : if hover it show a message in all rows here is css: <style> .tansa{ position: absolute; margin-right: -60px; margin-top:-25px; background: #CBDFF3; border: 1px solid #4081C3; font-size: 0.88em; padding: 2px 7px; display: inline-block; border-radius: 8px; -moz-border-radius: 8px; -webkit-border-radius: 8px; line-height: 1.2em; text-shadow: 0 0 0em #FFF; overflow: hidden; text-align: center; color:black; display:none; } .arrow{ position: relative; width: 0; height: 0; top: -25px; border-top: 5px solid #000000; border-right: 5px solid transparent; border-left: 5px solid transparent; display:none; } </style> here is my php : <table><tr>row</tr> <?php $results = mysql_query("select * from MyTable"); while{$r = mysql_fetch_array($results)){ echo "<tr><td>Row : <img src='img/tans.png' width='24' height='24' class='tansef' /><span class='tansa' >the message</span><div class='arrow'></div></td></tr>"; } ?> </table> here is jquery $(document).ready(function(){ $('.tansef').hover(function(){ var sh = $('.tansa'); var sharrow = $('.arrow'); sh.show(); sharrow.show(); },function(){ var shs = $('.tansa'); var sharrows = $('.arrow'); shs.hide(); sharrows.hide(); }); }); any solution to show the message in each row only

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• Unexpected token }

  - by tann98

  i have a script, to open a model window, but it wont work. google chrome give me "Uncaught SyntaxError: Unexpected token }", but on a line that doesnt even have a closing curly brace. here is my script: function showm(id1){ window.onscroll=function(){document.getElementById(id1).style.top=document.body.scrollTop;}; document.getElementById(id1).style.display="block"; document.getElementById(id1).style.top=document.body.scrollTop; } does anybody have any ideas on this? any help is appreciated.

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• Is this a good approach to dealing with tagging?

  - by Mel

  Can this code be optimized or re-factored? Is this an optimal approach to tagging? The following code is a callback in my posts model. It creates a record that associates a tag with a post in a QuestionsTags joiner table. When necessary, if a given tag does not already exist in the tags table, the function creates it, then uses its id to create the new record in the QuestionsTags table. The difficulty with this approach is the QuestionsTags table depends on data in the tags table which may or may not exist. The function assumes the following tables: tags(id, tagName), posts(tags) // Comma delimited list questionsTags(postId, tagId) The idea is to loop over a delimited list of tags submitted with a post and check to see if each tag already exists in the tags table If tag exists: Check to see if there's already a QuestionTag record for this post and this tag in the QuestionTags table. If yes, do nothing (the association already exists) If no, create a new QuestionTag record using the id of the existing tag and the postId If tag does not already exist: Create the new tag in the tags table Use its id to create a new QuestionsTags record Code /** * @hint Sets tags for a given question. **/ private function setTags() { // Loop over the comma and space delmited list of tags for (local.i = 1; local.i LTE ListLen(this.tags, ", "); local.i = (local.i + 1)) { // Check if the tag already exists in the database local.tag = model("tag").findOneByTagName(local.i); // If the tag exists, look for an existing association between the tag and the question in the QuestionTag table if (IsObject(local.tag)) { local.questionTag = model("questionTag").findOneByPostIdAndTagId(values="#this.postId#,#local.tag.id#"); // If no assciatione exists, create a new QuestionTag record using the tagId and the postId if (! IsObject(local.questionTag)) { local.newQuestionTag = model("questionTag").new(postId = this.id, tagId = local.tag.id); // Abort if the saving the new QuestionTag is unsuccesful if (! local.newQuestionTag.save()) { return false; } } } // If the tag does not exist create it else { local.newTag = model("tag").new(tagName = local.i, userId = this.ownerUserId); // Abort if the the new tag is not saved successfully if (! local.newTag.save()) { return false; } // Otherwise create a new association in the QuestionTags table using the id of the newly created tag and the postId local.newQuestionTag = model("questionTag").new(postId = this.id, tagId = local.newTag.id); // Abort if the new QuestionTag does not save correctly if (! local.newQuestionTag.save()) { return false; } } } } FYI: I'm using CFWheels in my application, which explains the ORM functions used.

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• Play/pause HTML 5 video using JQuery

  - by Barny83

  I am trying to control HTML5 videos using JQuery. I have two clips in a tabbed interface, there are six tabs in total, the others just have images. I am trying to make the video clips play when their tab is clicked and then stop when any of the others are clicked. This must be a simple thing to do but I cant seem to get it to work, the code I am using to play the video is: $('#playMovie1').click(function(){ $('#movie1').play(); }); I have read that the video element needs to be exposed in a function to be able to control it but can't find an example. I am able to make it work using JS: document.getElementById('movie1').play(); Any advice would be great. Thanks

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• Auto refresh of page in Rails 3 using javascript

  - by teknull

  I have a view in my rails app: blah.app/units/status This displays a status of all my units. I'd like to have the page automatically refresh via javascript but I'm not sure how to do it. I tried writing this but it doesn't reload: <script> $(function() { setInterval(function(){ $.getScript("/units/status"); }, 10000); }); </script> Can someone point out where I'm going wrong here?

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• Hibernate mysql groupe by day whith 0 entities

  - by Touhami

  I have this function i need to do that in sql (hibernate or mysql) or a java function that interpert the array of results select DAY(affaire.docCreationDate), count(affaire.docfullName) from CRMAffaireCode.AffaireClass as affaire where affaire.docfullName like 'CRMAffaire.Affaire%' and affaire.docCreationDate = '" + startDate + " 00:00:00' and affaire.docCreationDate <= '" + endDate + " 23:59:59' GROUP BY DAY(affaire.docCreationDate)" i have this entitie count in my table 2012-10-05 3 2012-10-06 0 2012-10-07 7 2012-10-08 13 2012-10-09 9 2012-10-10 0 2012-10-11 0 2012-10-12 3 the request return me this values 5 3 7 7 8 13 9 9 12 3 in this way i loose three lignes that have 0 as value, i need a request that return me this 5 3 6 0 7 7 8 13 9 9 10 0 11 0 12 3

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• Using Jquery 1.8.0 return false is not breaking an each() loop

  - by user1879729

  Here is the script I am using. $('.row').each(function(){ $(this).each(function(){ if($(this).find('.name').val()==""){ $(this).find('.name').val(data.name); $(this).find('.autonomy').val(data.autonomy); $(this).find('.purpose').val(data.purpose); $(this).find('.flow').val(data.flow); $(this).find('.relatedness').val(data.relatedness); $(this).find('.challenge').val(data.challenge); $(this).find('.mastery').val(data.mastery); $(this).find('.colour').val(data.colour); done=true; } if(done==true){ alert("here"); return false; } }); }); It just seems to totally ignore the return false and I can't seem to work out why!

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• jquery for loop on click image swap

  - by user2939914

  I've created a for loop of images. I would like each image to swap with another image on click individually. Here's the jQuery I've written so far: for ( var i = 1; i < 50; i++) { $('article').append('<div class="ps-block" id="' + i + '"><img src="img/bw/' + i + 'bw.png"></div>'); } $('img').click(function() { var imgid = $(this).attr('id'); $(this).attr("src", "img/color/" + imgid + ".png"); }); I also attempted to use this code inside the for loop after the append, but i ends up returning 50 every time you click since the loop has already ran: $('img[src="img/bw/' + i + 'bw.png"]').click(function() { $(this).attr("src", "img/color/" + this.id + ".png"); }); Thanks!

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• How to trigger an event ONLY if both dropdowns are selected?

  - by DaveDev

  I have a dropdown select list on my page of class="TypeFilter". I have a jQuery event that fires when a value in that list is selected. $(".TypeFilter").change(function() { // Extract value from TypeFilter and update page accordingly )); I now have to add another list to the page, and I want to implement functionality which will prevent the .change(function() from running unless both are selected. In both lists the first option in the list is some text instructing the user to select one of the items, so I was thinking of just writing some logic to test that both lists have a selected index greater than 0. I think this is a touch unclean though, especially considering that other pages that have a TypeFilter use the same logic. Is there any nifty functionality in jQuery that can do this?

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• how to loop throw all the Fileds in the view to check wheather checkbox is checked or not using jque

  - by kumar

  Hello friends. I have this code I am checking wheather checkbox i checked or not.. $('#btnsubmit').click(function() { $('#Details input[type=checkbox]').each(function() { if ($(this).attr('checked')) { alert("selected"); return false; } else { alert("please select atleast one user"); return false; } }); }); here var checked showing true or false.. I have deatils Fieldset in the view.. like that each field set having one check box.. like that there are three fieldsets with one check box..I need to know how many details checkbox is checked? can I loop each Details Fieldset to know how many details checkboxes are cheked? thanks

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