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• Void pointer values comparing C++

  - by user2962977

  My actual question is it really possible to compare values contained in two void pointers, when you actually know that these values are the same type? For example int. void compVoids(void *firstVal, void *secondVal){ if (firstVal < secondVal){ cout << "This will not make any sense as this will compare addresses, not values" << endl; } } Actually I need to compare two void pointer values, while outside the function it is known that the type is int. I do not want to use comparison of int inside the function. So this will not work for me as well: if (*(int*)firstVal > *(int*)secondVal) Any suggestions? Thank you very much for help!

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• Database Modelling - Conceptually different entities with near identical fields

  - by Andrew Shepherd

  Suppose you have two sets of conceptual entities: MarketPriceDataSet which has multiple ForwardPriceEntries PoolPriceForecastDataSet which has multiple PoolPriceForecastEntry Both different child objects have near identical fields: ForwardPriceEntry has StartDate EndDate SimulationItemId ForwardPrice MarketPriceDataSetId (foreign key to parent table) PoolPriceForecastEntry has StartDate EndDate SimulationItemId ForecastPoolPrice PoolPriceForecastDataSetId (foreign key to parent table) If I modelled them as separate tables, the only difference would be the foreign key, and the name of the price field. There has been a debate as to whether the two near identical tables should be merged into one. Options I've thought of to model this is: Just keep them as two independent, separate tables Have both sets in the one table with an additional "type" field, and a parent_id equalling a foreign key to either parent table. This would sacrifice referential integrity checks. Have both sets in the one table with an additional "type" field, and create a complicated sequence of joining tables to maintain referential integrity. What do you think I should do, and why?

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• How do I unhide a CFDIV that has dynamic content with AJAX binding itself?

  - by Eric Belair

  I have the following CFSELECT tags that are used to populate a text input: <cfselect id="this" name="this" bind="cfc:Data.getThis()" bindonload="true" /> <cfselect id="that" name="that" bind="cfc:Data.getThat({p1})" /> <cfselect id="theOther" name="theOther" bind="cfc:Data.getTheOther({p1}, {p2})" /> The text input is the only value that needs to be submitted in a form: <cfform name="addItem" method="post" action="somepage.cfm"> <cfinput type="text" id="item" name="item" bind="cfc:Data.getResult({this}, {that}, {theOther})" /><br /> <cfinput type="submit" name="addButton" value="Add Item" /> </cfform> I want the form and it's contents to be visible only when all three selections have been made, and there is a value for the text input. What is the best way to do this? I'm assuming some use of CFDIV is the best way, but I'm not sure how to load the dynamic content (the CFINPUTs) this way.

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• Solving a cyclical dependency in Ninject (Compact Framework)

  - by Alex

  I'm trying to use Ninject for dependency injection in my MVP application. However, I have a problem because I have two types that depend on each other, thus creating a cyclic dependency. At first, I understand that it was a problem, because I had both types require each other in their constructors. Therefore, I moved one of the dependencies to a property injection instead, but I'm still getting the error message. What am I doing wrong? This is the presenter: public class LoginPresenter : Presenter<ILoginView>, ILoginPresenter { public LoginPresenter( ILoginView view ) : base( view ) { } } and this is the view: public partial class LoginForm : Form, ILoginView { [Inject] public ILoginPresenter Presenter { private get; set; } public LoginForm() { InitializeComponent(); } } And here's the code that causes the exception: static class Program { /// <summary> /// The main entry point for the application. /// </summary> [MTAThread] static void Main() { // Show the login form Views.LoginForm loginForm = Kernel.Get<Views.Interfaces.ILoginView>() as Views.LoginForm; Application.Run( loginForm ); } } The exception happens on the line with the Kernel.Get<>() call. Here it is: Error activating ILoginPresenter using binding from ILoginPresenter to LoginPresenter A cyclical dependency was detected between the constructors of two services. Activation path: 4) Injection of dependency ILoginPresenter into property Presenter of type LoginForm 3) Injection of dependency ILoginView into parameter view of constructor of type LoginPresenter 2) Injection of dependency ILoginPresenter into property Presenter of type LoginForm 1) Request for ILoginView Suggestions: 1) Ensure that you have not declared a dependency for ILoginPresenter on any implementations of the service. 2) Consider combining the services into a single one to remove the cycle. 3) Use property injection instead of constructor injection, and implement IInitializable if you need initialization logic to be run after property values have been injected. Why doesn't Ninject understand that since one is constructor injection and the other is property injection, this can work just fine? I even read somewhere looking for the solution to this problem that Ninject supposedly gets this right as long as the cyclic dependency isn't both in the constructors. Apparently not, though. Any help resolving this would be much appreciated.

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• How Do I Make A Bash Script for Git Checkin/Checkout?

  - by ServerChecker

  I was thinking of bringing up a git service on an Ubuntu server. However, the way me and another programmer operate -- we really want to try and stick to one person working on a project at a time. How would I make a Bash script to create a check in and check out with git? We want to prevent anyone from checking in code that hasn't already been checked in, and it should error out with the name of the person who has the code checked out. EDIT: I'm not really interested in using Git with its fantastic diff features. I move 100mph and don't have time to play diff games with the other developers. That's why we're using Git. If the other developers want to play the diff game, they can still do so. But when I check something out, I want it locked to everyone until I check it back in again.

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• WCF service reference stopped generating code for one project

  - by Mike Pateras

  I have references to two different WCF services in a project. I updated the reference for one of the services, and now no code is generated for it. The references.cs file just has the "this is genrated code" comment at the top. Updating that same service in other projects and updating the other service both work fine. It's only that one service reference in this one project that's causing the problem, and I'm getting no information from Visual Studio (it just says it failed to generate code and I should look at the other errors, which provide no information). If I uncheck the "reuse types in referenced assemblies", code is generated, but I don't want to have this one project be different from the others. I'd like to solve the problem. Re-checking the reuse type option produces an empty references.cs file, again. The collection type doesn't seem to matter, either. How can I diagnose and solve this problem?

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• html tags between <style> tags

  - by Gagan

  <html> <body> <style type="text/css"> p.first {color:blue} p.second {color:green} </style> <p class="first">Hello World</p> <p class="second">Hello World</p> <style type="text/css"> p.first {color:green} p.second {color:blue} </style> <p class="first">Hello World</p> <p class="second">Hello World</p> </body> </html> How is a browser supposed to render css which is non contiguous? Is it supposed to generate some data structure using all the css styles on a page and use that for rendering? Or does it render using style information in the order it sees?

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• Create LINQ to entities OrderBy expression on the fly

  - by AyKarsi

  I'm trying to add the orderby expression on the fly. But when the query below is executed I get the following exception: System.NotSupportedException: Unable to create a constant value of type 'Closure type'. Only primitive types ('such as Int32, String, and Guid') are supported in this context. The strange thing is, I am query exactly those primitive types only. string sortBy = HttpContext.Current.Request.QueryString["sidx"]; ParameterExpression prm = Expression.Parameter(typeof(buskerPosting), "posting"); Expression orderByProperty = Expression.Property(prm, sortBy); // get the paged records IQueryable<PostingListItemDto> query = (from posting in be.buskerPosting where posting.buskerAccount.cmsMember.nodeId == m.Id orderby orderByProperty //orderby posting.Created select new PostingListItemDto { Set = posting }).Skip<PostingListItemDto>((page - 1) * pageSize).Take<PostingListItemDto>(pageSize); Hope somebody can shed some light on this!

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• Using Rails and Rspec, how do you test that the database is not touched by a method

  - by Will Tomlins

  So I'm writing a test for a method which for performance reasons should achieve what it needs to achieve without using SQL queries. I'm thinking all I need to know is what to stub: describe SomeModel do describe 'a_getter_method' do it 'should not touch the database' do thing = SomeModel.create something_inside_rails.should_not_receive(:a_method_querying_the_database) thing.a_getter_method end end end EDIT: to provide a more specific example: class Publication << ActiveRecord::Base end class Book << Publication end class Magazine << Publication end class Student << ActiveRecord::Base has_many :publications def publications_of_type(type) #this is the method I am trying to test. #The test should show that when I do the following, the database is queried. self.publications.find_all_by_type(type) end end describe Student do describe "publications_of_type" do it 'should not touch the database' do Student.create() student = Student.first(:include => :publications) #the publications relationship is already loaded, so no need to touch the DB lambda { student.publications_of_type(:magazine) }.should_not touch_the_database end end end So the test should fail in this example, because the rails 'find_all_by' method relies on SQL.

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• Definition list disc not showing up

  - by aslum

  CSS: .about dt { list-style-type:none; font-weight:bold; } .about dd { list-style-type: disc; list-style-position: outside; margin-left: 0px; padding-left: 30px; } And the html <dl class="about"> <dt>Current topics and titles </dt> <dd>Fulfilling community residents&rsquo; appetite for information about popular cultural and social trends and their desires for satisfying recreational experiences</dd> ... I want a disc before the DD, but it's not showing up in Chrome or IE. Any ideas what I've done wrong? Thanks!

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• How to receive the text which was sent by SendText

  - by thillai-selvan

  In asterisk I have sent a text message using SendText as follows I have two registered users in sip.conf file. sip.conf details [thillai] username=thillai secret=thillai host=dynamic type=friend allow=all context=test [selvan] username=selvan secret=selvan allow=all host=dynamic type=friend context=test Then I have created the necessary extensions like this extensions.conf file: [test] exten = 677,1,BackGround(thankyou) exten = 677,n,Dial(SIP/thillai) exten = 677,n,SendText('this is for testing') So when a caller is trying to call to extension 677 this text information will be sent. My question is how can I receive this text in the caller side? Any help will be much appreciated.

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• Mac OSX: Passing a file from user process to kernel module.

  - by Inso Reiges

  Hello, I need to pass a link to file from a user process to the OSX kernel driver. By link i mean anything that uniquely identifies a file on the local filesystem. I need that link to do I/O on that file in kernel. The most obvious solution seems to pass a file name and use a VFS vnode lookup. However i noticed, that Apple Disk Images helper process passes a raw data array for image-path property to driver when attaching a disk image file: <2f 56 6f 6c 75 6d 65 73 2f 73 74 6f 72 61 67 65 2f 74 65 73 74 32 2e 64 6d 67> What is that diskimages-helper passes to the kernel driver? Some serialized type perhaps? If yes, what type is it and how can i use it?

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• how to get the size of a record in mysql

  - by Osama

  How to get the size of a record in MySql if the table contains fields of type TEXT or BLOB?

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• How to change the JSON output format and how to support chinese character?

  - by sky

  Currently I using the following code to get my JSON output from MySQL. <?php $session = mysql_connect('localhost','name','pass'); mysql_select_db('dbname', $session); $result= mysql_query('SELECT message FROM posts', $session); $somethings = array(); while ($row = mysql_fetch_assoc($result)) { $somethings[] = $row; } ?> <script type="text/javascript"> var somethings= <?php echo json_encode($somethings); ?>; </script> And the output is: <script type="text/javascript"> var somethings= [{"message":"Welcome to Yo~ :)"},{"message":"Try iPhone post!"},{"message":"????"}]; </script> Here is the question, how can I change my output into format like : <script type="text/javascript"> userAge = new Array('21','36','20'), userMid = new Array('liuple','anhu','jacksen'); </script> Which I'll be using later with following code : var html = ' <table class="map-overlay"> <tr> <td class="user">' + '<a class="username" href="/' + **userMid[index]** + '" target="_blank"><img alt="" src="' + getAvatar(signImgList[index], '72x72') + '"></a><br> <a class="username" href="/' + **userMid[index]** + '" target="_blank">' + userNameList[index] + '</a><br> <span class="info">' + **userSex[index]** + ' ' + **userAge[index]** + '?<br> ' + cityList[index] + '</span>' + '</td> <td class="content">' + picString + somethings[index] + '<br> <span class="time">' + timeList[index] + picTips + '</span></td> </tr> </table> '; Thanks for helping and reading!

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• nodejs response speed and nginx

  - by user1502440

  I'm just started testing nodejs, and wanted to get some help in understanding following behavior: Example #1: var http = require('http'); http.createServer(function(req, res){ res.writeHeader(200, {'Content-Type': 'text/plain'}); res.end('foo'); }).listen(1001, '0.0.0.0'); Example #2: var http = require('http'); http.createServer(function(req, res){ res.writeHeader(200, {'Content-Type': 'text/plain'}); res.write('foo'); res.end('bar'); }).listen(1001, '0.0.0.0'); When testing response time in Chrome: example #1 - 6-10ms example #2 - 200-220ms But, if test both examples through nginx proxy_pass server{ listen 1011; location / { proxy_pass http://127.0.0.1:1001; } } i get this: example #1 - 4-8ms example #2 - 4-8ms I am not an expert on either nodejs or nginx, and asking if someone can explain this? nodejs - v.0.8.1 nginx - v.1.2.2

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• Nullable enum in html helper

  - by Fabien Piron

  I have a view model that contains enum with nullable type like this one : public StudyLevel? studyLevel { get; set; } I have made custom html helper to display a dropdownlist for rendering the enum into the view, the nullable case is displayed using <option value="null">No value</option> the problem is that when i submit the form modelstate give me the error : studylevel cannot be "null" . Could you suggest me any way to help me handle the nullable type in the view ?

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• Problems rendering pages in FF and IE

  - by Michael

  I am having a constant trouble with pages not rendering correctly between FF and IE. not my code below. "Select an Account" should be next to the drop down such as: Select an Account Type: "then my form" however my form goes to the next line when I want it next to "Select an Account". In IE it renders correctly in FF it does not. <p><b><strong>Select an Account Type <FORM NAME="myform"> <SELECT NAME="mylist"> <OPTION VALUE="traditional">Traditional Account <OPTION VALUE="paperless">Paperless Account </SELECT> </FORM></b></strong></p>

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• Template function as a template argument

  - by Kos

  I've just got confused how to implement something in a generic way in C++. It's a bit convoluted, so let me explain step by step. Consider such code: void a(int) { // do something } void b(int) { // something else } void function1() { a(123); a(456); } void function2() { b(123); b(456); } void test() { function1(); function2(); } It's easily noticable that function1 and function2 do the same, with the only different part being the internal function. Therefore, I want to make function generic to avoid code redundancy. I can do it using function pointers or templates. Let me choose the latter for now. My thinking is that it's better since the compiler will surely be able to inline the functions - am I correct? Can compilers still inline the calls if they are made via function pointers? This is a side-question. OK, back to the original point... A solution with templates: void a(int) { // do something } void b(int) { // something else } template<void (*param)(int) > void function() { param(123); param(456); } void test() { function<a>(); function<b>(); } All OK. But I'm running into a problem: Can I still do that if a and b are generics themselves? template<typename T> void a(T t) { // do something } template<typename T> void b(T t) { // something else } template< ...param... > // ??? void function() { param<SomeType>(someobj); param<AnotherType>(someotherobj); } void test() { function<a>(); function<b>(); } I know that a template parameter can be one of: a type, a template type, a value of a type. None of those seems to cover my situation. My main question is hence: How do I solve that, i.e. define function() in the last example? (Yes, function pointers seem to be a workaround in this exact case - provided they can also be inlined - but I'm looking for a general solution for this class of problems).

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• get renamed file names of multiple upload form [js array] in codeigniter

  - by artmania

  Hi friends, I use codeigniter. I have a multiple image upload form. The code below is working well for uploading, but I also need to save file names to database. How can I get the names in here? I spent hours & hours :/ but could not sort it :/ Appreciate helps!!! uploadform.php echo form_open_multipart('gallery/upload'); <input type="file" name="photo" size="50" /> <input type="file" name="thumb" size="50" /> <input type="submit" value="Upload" /> </form> I have a controller between form view and model load model (of course : )) but didnt post here because of no need. gallery_model.php function multiple_upload($upload_dir = 'uploads/', $config = array()) { /* Upload */ $CI =& get_instance(); $files = array(); if(empty($config)) { $config['upload_path'] = realpath($upload_dir); $config['allowed_types'] = 'gif|jpg|jpeg|jpe|png'; $config['max_size'] = '2048'; } $CI->load->library('upload', $config); $errors = FALSE; foreach($_FILES as $key => $value) { if( ! empty($value['name'])) { if( ! $CI->upload->do_upload($key)) { $data['upload_message'] = $CI->upload->display_errors(ERR_OPEN, ERR_CLOSE); // ERR_OPEN and ERR_CLOSE are error delimiters defined in a config file $CI->load->vars($data); $errors = TRUE; } else { // Build a file array from all uploaded files $files[] = $CI->upload->data(); } } } // There was errors, we have to delete the uploaded files if($errors) { foreach($files as $key => $file) { @unlink($file['full_path']); } } elseif(empty($files) AND empty($data['upload_message'])) { $CI->lang->load('upload'); $data['upload_message'] = ERR_OPEN.$CI->lang->line('upload_no_file_selected').ERR_CLOSE; $CI->load->vars($data); } else { return $files; } /* ------------------------------- Insert to database */ // problem is here, i need file names to add db. // if there is already same names file at the folder, it rename file itself. so in such case, I need renamed file name :/ } }

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• CSS Hidden DIV Form Submit

  - by Michael

  Using CSS, when a link is clicked it brings up a hidden DIV that contains a form. The user will then enter information and then submit the form. I'd like the hidden DIV to remain visisble, and a 'success message' to be displayed after submission. Then the user will have the option of closing the DIV. I can't get it to work without reloading the page, which causes the DIV to become hidden again. Any ideas? <body> <a href="javascript:showDiv()" style="color: #fff;">Click Me</a> <!--POPUP--> <div id="hideshow" style="visibility:hidden;"> <div id="fade"></div> <div class="popup_block"> <div class="popup"> <a href="javascript:hideDiv()"> <img src="images/icon_close.png" class="cntrl" title="Close" /> </a> <h3>Remove Camper</h3> <form method="post" onsubmit="email.php"> <p><input name="Name" type="text" /></p> <p><input name="Submit" type="submit" value="submit" /></p> </form> <div id="status" style="display:none;">success</div> </div> </div> </div> <!--END POPUP--> <script language=javascript type='text/javascript'> function hideDiv() { if (document.getElementById) { // DOM3 = IE5, NS6 document.getElementById('hideshow').style.visibility = 'hidden'; } else { if (document.layers) { // Netscape 4 document.hideshow.visibility = 'hidden'; } else { // IE 4 document.all.hideshow.style.visibility = 'hidden'; } } } function showDiv() { if (document.getElementById) { // DOM3 = IE5, NS6 document.getElementById('hideshow').style.visibility = 'visible'; } else { if (document.layers) { // Netscape 4 document.hideshow.visibility = 'visible'; } else { // IE 4 document.all.hideshow.style.visibility = 'visible'; } } } </script> </body>

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• Problems with MYSQL database

  - by shinjuo

  I have a database that worked fine until I decided to add a log onto the page. here is what I have now: <body> <?php if($_SERVER['REQUEST_METHOD'] == 'POST') { require("serverInfo.php"); mysql_query("UPDATE `cardLists` SET `AmountLeft` = `AmountLeft` + ".mysql_real_escape_string($_POST['Add'])." WHERE `cardID` = '".mysql_real_escape_string($_POST['Cards'])."'"); echo "\"" .$_POST['Add'] ."\" has been added to the inventory amount for the card \"". $_POST['Cards']. "\""; mysql_query("INSERT INTO `log` (`changes`, `amount`, `cardID`, `person`, Date)VALUES('ADDED','$_POST['Add']','$_POST['Cards']', '$_POST['Person']', NOW())"); mysql_close($link); } ?> <form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post"> <?php require("serverInfo.php"); ?> <?php $res = mysql_query("SELECT * FROM cardLists order by cardID") or die(mysql_error()); echo "<select name = 'Cards'>"; while($row=mysql_fetch_assoc($res)) { echo "<option value=\"$row[cardID]\">$row[cardID]</option>"; } echo "</select>"; ?> Amount to Add: <input type="text" name="Add" maxlength="8" /> Changes Made By: <select name="Person"> <option value="justin">Justin</option> <option value="chris">Chris</option> <option value="matt">Matt</option> <option value="dan">Dan</option> <option value="tim">Tim</option> <option value="amanda">Amanda</option> </select> <input type="submit" name ="submit" onClick= "return confirm( 'Are you sure you want to add this amount?');"> </form> <br /> <input type="button" name="main" value="Return To Main" onclick="window.location.href='index.php';" /> </body> </html> it works fine until I added the: mysql_query("INSERT INTO `log` (`changes`, `amount`, `cardID`, `person`, Date)VALUES('ADDED','$_POST['Add']','$_POST['Cards']', '$_POST['Person']', NOW())"); mysql_close($link); Can anyone see what is going on?

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• "remote file operation failed" on Hudson

  - by Aveen

  I am running a Windows slave for Husdon 1.337 (Linux master). When running a project on the Windows node, it fails with the following message: Building remotely on winTestSlave Checking out a fresh workspace because there's no workspace at C:\hudson\***\ejb remote file operation failed It did work yesterday and I have not upgraded Hudson or changed its configurations (or the slave's configurations) in any way. I establish the connection between the slave and the master by running the following command on a cygwim prompt on the slave: java -jar slave.jar -jnlpUrl http://myserver/computer/winTestSlave/slave-agent.jnlp I saw the issue http://issues.hudson-ci.org/browse/HUDSON-5374 and did as instructed in the work-around but that did not work. I also tried with a newer version of slave.jar (version 1.356) but that did not work either. Does anyone please have any idea of how to fix this? I really cannot find more information anywhere else!

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• asp.net mvc script and style references

  - by tom

  I'm trying to include script and style references that will not break on deployment, however I can not even get the references to work locally. I have tried using Url.Content() and MVCContrib's <%=Html.ScriptInclude("")%>. My scripts are in a Scripts folder on the root of the site; my styles are in the usual Content/css/ folder. The scripts render like this: <script type="text/javascript" src="/Scripts/MicrosoftAjax.debug.js" ></script> This will not work in a view page in the Views folder. What am I doing wrong and what is the best way to handle this? I would have thought Url.Content() would at least work for styles but used in my master page, the link rendered <link href="/Content/css/Site.css rel="stylesheet" type="text/css" /> This does not work, because the Master Page is in a Shared folder, so what is really the way forward with this?

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• Sharepoint 2007 : Saving Form data with page redirection using custom parameters.

  - by Deepu

  HI Experts, After saving the form data I would like to REDIRECT to different pages based on the @Status value using the input type button. <input type="button" value="Save" name="btnSave" id="btnSave" onclick="{ddwrt:GenFireServerEvent('_commit;_redirect={*Confirm.aspx?ID=1}')};" /* if @Status == "Draft" url = "draft.aspx ? ID = " @ID else if @Status == "Save" url = "save.aspx ? ID = " @ID else url = "confirm.aspx ? ID = " @ID Here @ID and @Status are share point list column names Now I have hard-coded the url Confirm.aspx?ID=4. But I want to check the status value using XSLT condition and set different URL name with @ID value.. How do I achieve this.. any help would be appreciated.. thanks deepu

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• Jquery getting list of values of hidden inputs within a div

  - by RandyMarsh

  I am trying to get a list of values within a div that I will format later using the .each() method. They are input values which are hidden my html and jquery call looks like this. <div id="container_0"> <input type="hidden" id="check_data" value=10> <input type="hidden" id="check_data" value=20> </div> Jquery: var list = $('#container_0 input#check_data'); $(list).each( function() { alert($(this).val()); } ); This however is not returning any values. Any help would be greatly appreciated.

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