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• C++: namespace conflicht between extern "C" and class member

  - by plaisthos

  Hi, I stumbled upon a rather exotic c++ namespace problem: condensed example: extern "C" { void solve(lprec * lp); } class A { public: lprec * lp; void solve(int foo); } void A::solve(int foo) { solve(lp); } I want to call the c funcition solve in my C++ member function A::solve. The compiler is not happy with my intents: error C2664: 'lp_solve_ilp::solve' : cannot convert parameter 1 from 'lprec *' to 'int' Is there something I can prefix the solve function? C::solve does not work

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• I need to iterate a loop to every time find the string appearing after a particular string say "if(O

  - by Parth

  I need to iterate a loop to every time find the string appearing after a particular string say "if(OLD.", then which PHP function will be helpful for me? Suppose I have a variable say, $string, according to any select query say "select * friends", Now any of its value contain a string say "how are you Jack?" Now I want to iterate a loop around the above value containing variable to get the varying name of friends after a string "how are you "... Hence I need a function of PHP to accomplish it... Please help

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• chosen add multiple row dinamical

  - by Mario Jose Mixco

  I have a question with the plugin ajax-chosen, I need to add multiple dynamically on a form on page load the first no problem but when I try to dynamically add a new element does not work, I hope you can help me and again sorry for my English $ ("a.add-nested-field"). each (function (index, element) { return $ (element). on ("click", function () { var association, new_id, regexp, template; association = $ (element). attr ("data-association"); template = $ ("#" + association + "_fields_template"). html (); regexp = new RegExp ("new_" + association, "g"); new_id = new Date (). getTime (); $ (element). closest ("form"). FIND (". nested-field: visible: last"). after (template.replace (regexp, new_id)); return false; }); });

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• how to use NtCreateMutant(Zw) to create a mutex in C++

  - by Simon

  Hey i want to create a mutex with the kernel function NtCreateMutant. I did it like this: Handle hMutex; NTSTATUS ntMutex = NtOpenMutant(&hMutex,MUTEX_ALL_ACCESS,false); the NTSTATUS value that is returned: C0000024 STATUS_OBJECT_TYPE_MISMATCH hope someone can help me with calling NtOpenMutant the right way. With the windows API OpenMutex(..) its working just fine.. HANDLE hMutex; hMutex = OpenMutex(MUTEX_ALL_ACCESS, FALSE, "Name"); Hope someone can explain me how to use the nativ function :)

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• Passing operator as a parameter

  - by nacho4d

  Hi, I want to have a function that evaluates 2 bool vars (like a truth table) for example: since T | F : T then myfunc('t', 'f', ||); /*defined as: bool myfunc(char lv, char rv, ????)*/ should return true; how can I pass the third parameter? (I know is possible to pass it as a char* but then I will have to have another table to compare operator string and then do the operation which is something I would like to avoid) Is it possible to pass an operator like ^(XOR) or ||(OR) or &&(AND), etc in a function/method? Thanks in advance

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• Why is it so hard to build a gtk programe without console using cmake in windows?

  - by Runner

  I'm following the tuto: http://zetcode.com/tutorials/gtktutorial/firstprograms/ It works but each time I double click on the executable,there is a console which I don't want it there. How do I get rid of that console? I tried this: add_executable(Cmd WIN32 cmd.c) But got this fatal error: MSVCRTD.lib(crtexew.obj) : error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup Cmd.exe : fatal error LNK1120: 1 unresolved externals While using gcc directly works: gcc -o Cmd cmd.c -mwindows .. I'm guessing it has something to do with the entry function: int main( int argc, char *argv[]),but why gcc works? How can I make it work with cmake?

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• Create Static Library iOS Error

  - by bit-whacker

  This is FIrst time i try to create Cocoa Touch Static Library and follow these steps. Create New Project with Cocoa Touch Static Library named it By default i got single class with Demo.h and Demo.m. 2.Create a public function in .h and implement it in .m. 3.Select iOS Device and press cmd + B. 4.Copy Demo.a from products and the .h file drop it in my iOS App where i want to use it. 5.Then Import Demo.h and try to call the function that i wrote. Issue When try to Run the project showing this error. ld: warning: ignoring file /Users/Zenga/Documents/iOS/Static Library/myAppwithLib/Demo.a, file was built for archive which is not the architecture being linked (i386): /Users/Zenga/Documents/iOS/Static Library/myAppwithLib/Demo.a Undefined symbols for architecture i386: "_OBJC_CLASS_$_Demo", referenced from: objc-class-ref in ViewController.o ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation) Please help if anyone have any idea about it.

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• jQuery not selecting div class

  - by Cortopasta

  Trying to make a simple toggle menu, and I can't seem to hide/show the sub menu using this bit of jQuery: $(".topic news").mouseup(function(){ $(".feed groups").hide("fast", function(){ $(".feed messages").hide("fast"); $("ul.feed news").toggle("fast"); }); }); Here is the corresponding HTML: <div class="topic news"> <span>News Feed</span> </div> <ul class="feed news"> <li>News item #1</li> <li>News item #1</li> <li>News item #1</li> <li>News item #1</li> <li>News item #1</li> </ul> Any ideas?

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• Using jQuery to make a group of images appear in order.

  - by Sean Johnson

  I have a page that shows a bunch of thumbnails (around 30), and the client is wanting them to appear one by one, in order, going from left to right on the page. This is what I've tried: var start_opacity = 500; $j('.grid-photo').each(function(i) { start_opacity = start_opacity + 500; setTimeout(function() { $j(i).animate({opacity: 1}, 4000); }, start_opacity); }); It doesn't seem to know what i is referencing. Any thoughts?

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• jQuery Hide Div(s) on focus of drop down menu or text (live search) input

  - by webwrks

  Can anyone help me? I'm trying to hide the #hideme div when the a user clicks the drop down menu (to select something) or puts the focus on the text field. Thanks! #hideme { background:#ccc; } <script> $(function(){ $('#skill_select').click(function(){ $('#hideme').hide(); }); }): </script> <select> <option selected="selected">Pick from the list</option> <option>Option One</option> <option>Option Two</option> </select> or <input type="text" value="type something"> <br/><br/> <div id="hideme">Hide Me Please</div>

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• C#: Label contains no text

  - by Vinzcent

  Hey I would like to get the text out of a label. But the label text is set with Javascript. On the page I can see that there is text in the label, but when I debug it shows this: "". So how do I get the text out of a label that is set with Javascript, at least that is what I think is the problem. My code: <asp:TextBox ID="txtCount" runat="server" Width="50px" Font-Names="Georgia, Arial, sans-Serif" ForeColor="#444444"></asp:TextBox> <ajaxToolkit:NumericUpDownExtender ID="NumericUpDownExtender1" runat="server" Minimum="1" TargetButtonDownID="btnDown" TargetButtonUpID="btnUp" TargetControlID="txtCount" Width="20" /> <asp:ImageButton ID="btnUp" runat="server" AlternateText="up" ImageUrl="Images/arrowUp.png" OnClientClick="setAmountUp()" ImageAlign="Top" CausesValidation="False" /> <asp:ImageButton ID="btnDown" runat="server" AlternateText="down" ImageUrl="Images/arrowDown.png" OnClientClick="setAmountDown()" ImageAlign="Bottom" CausesValidation="False" /> <asp:Label ID="lblKorting" runat="server" /> <asp:Label ID="lblAmount" runat="server" /> <asp:Button ID="btnBestel" runat="server" CssClass="btn" Text="Bestel" OnClick="btnBestel_Click1" /> JS function setAmountUp() { var aantal = document.getElementById('<%=txtCount.ClientID%>').value-0; aantal+=1; calculateAmount(aantal); } function setAmountDown() { var aantal = document.getElementById('<%=txtCount.ClientID%>').value-0; if(aantal > 1) aantal -=1; calculateAmount(aantal); } function calculateAmount(aantal) { var prijs = document.getElementById('<%=lblPriceBestel.ClientID%>').innerHTML -0; var totaal = 0; if(aantal < 2) { totaal = prijs * aantal; document.getElementById('<%=lblKorting.ClientID%>').innerHTML = ""; } else if(aantal >= 2 && aantal < 5) { totaal = (prijs * aantal)*0.95; document.getElementById('<%=lblKorting.ClientID%>').innerHTML = "-5%"; } else if(aantal >= 5) { totaal = (prijs * aantal)*0.90; document.getElementById('<%=lblKorting.ClientID%>').innerHTML = "-10%"; } document.getElementById('<%=lblAmount.ClientID%>').innerHTML = totaal; } C# private OrderBO bestelling; protected void btnBestel_Click1(object sender, EventArgs e) { bestelling = new OrderBO(); bestelling.Amount = Convert.ToInt32(lblAmount.Text); //<--- THIS IS "" in the debugger, but on the page 10 }

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• Limit text area value and cut the rest

  - by streetparade

  I have a textarea which users can enter some tags. I need to limit this tags to 20 tags. Tags could be enterer this way maytag1,mytag2,mytag3 What i wrote is this function function limitTags() { var tags = $("input[type=text][name=tags]").val() var tag = $.trim(tags); var selected = new Array(); /** * replace the last ',' */ if(tag.substring(tag.length - 1) == ",") { *///tag = tag.replace(tag.length - 1, ''); } var enteredTags = tag.split(","); if( enteredTags.length > 20 ) { //$("input[type=text][name=tags]").val(enteredTags.join(",", enteredTags)); alert("Only 20 Tags allowed"); } } The alert works just fine but, after the alert box is gone. i can continiue entering tags till the alert box appears. What i need is cut the text after the messagebox which was entered also the last "," I hope i could ask my question clear. Thanks

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• Unity JS - simple if statements not behaving as expected?

  - by IHazABone

  I have a simple script (please no remarks on the fact that I'm not using a switch statement or better code, this is the earliest version and written this way by a peer, I am improving it) that takes an object and moves it back and forth. For some reason, the variable time gets stuck at 249. It is probably an obvious bug with this inefficient logic, but I cannot seem to find it. var speed = 1; private var time = 0; function Start() { } function Update() { if(condition == true)moveStuff(); } function moveStuff() { var timeSwitch = false; if(time == 0)timeSwitch = false; if(time == timeSet)timeSwitch = true; if(direction == 1) { if(timeSwitch == false) { transform.Translate(Vector3.up * (Time.deltaTime * speed)); time += 1; Debug.Log(time); }else if(timeSwitch == true) { transform.Translate(Vector3.up * ((Time.deltaTime * speed) * -1)); time -= 1; Debug.Log(time); } } else if(direction == 2) { if(timeSwitch == false) { transform.Translate(Vector3.down * (Time.deltaTime * speed)); time += 1; Debug.Log("Moved down. "); }else if(timeSwitch == true){ transform.Translate(Vector3.down * ((Time.deltaTime * speed) * -1)); time -= 1; } } else if(direction == 3) { if(timeSwitch == false) { transform.Translate(Vector3.forward * (Time.deltaTime * speed)); time += 1; Debug.Log("Moved forward. "); }else if(timeSwitch == true){ transform.Translate(Vector3.forward * ((Time.deltaTime * speed) * -1)); time -= 1; } } else if(direction == 4) { if(timeSwitch == false) { transform.Translate(Vector3.back * (Time.deltaTime * speed)); time += 1; Debug.Log("Moved back. "); }else if(timeSwitch == true){ transform.Translate(Vector3.back * ((Time.deltaTime * speed) * -1)); time -= 1; } } else if(direction == 5) { if(timeSwitch == false) { transform.Translate(Vector3.right * (Time.deltaTime * speed)); time += 1; Debug.Log("Moved right. "); }else if(timeSwitch == true){ transform.Translate(Vector3.right * ((Time.deltaTime * speed) * -1)); time -= 1; } } else if(direction == 6) { if(timeSwitch == false) { transform.Translate(Vector3.left * (Time.deltaTime * speed)); time += 1; Debug.Log("Moved left. "); }else if(timeSwitch == true){ transform.Translate(Vector3.left * ((Time.deltaTime * speed) * -1)); time -= 1; } } }

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• Mask image does not appear on the screen

  - by Ponty

  I have imported to the library two images and have given them the custom class names MaskImage and MaskedImage. Then i write the code: package { import flash.display.*; public class MaskDemo extends Sprite { // Properties private var sprMaskedImage:Sprite; private var sprMaskImage:Sprite; private var bmMaskedImage:Bitmap; private var bmMaskImage:Bitmap; // Constructor public function MaskDemo() { do_magic(); } // Methods private function do_magic():void { bmMaskedImage = new Bitmap(new MaskedImage(0, 0)); bmMaskImage = new Bitmap(new MaskImage(0, 0)); sprMaskedImage = new Sprite(); sprMaskedImage.addChild(bmMaskedImage); sprMaskImage = new Sprite(); sprMaskImage.addChild(bmMaskImage); sprMaskedImage.mask = sprMaskImage; this.addChild(sprMaskImage); } } } But it does not appear anything on the display. Any ideas why is happening that?

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• jQuery: exclude class on click

  - by Kevin Brown

  //Table select $("#reports-table tr").click( function() { var detail_id = $(this).attr('id'); $(this).addClass("selected"); $(this).siblings().removeClass("selected"); $('#reports-right').show().load('/members/details/'+detail_id); $('#reports-table').width(680); } ); I currently am using this code to add a selected class to a table row and show details of the row clicked in a right 'aside'. The problem is, I have action buttons in the row--when they are clicked, becausee they are children of the tr, this function still runs... How can I exclude a certain class?

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• Insert A Line At The Beginnig Of A File

  - by thebourneid

  I'm trying to insert/add a line 'COMMENT DUMMY' at the beginnig of a file as a first row if /PATTERN/ not found. I know how to do this with OPEN CLOSE function. Probably after reading the file it should look something like this: open F, ">", $fn or die "could not open file: $!"; ; print F "COMMENT DUMMY\n", @array; close F; But I have a need to implement this with the use of the Tie::File function and don't know how. use strict; use warnings; use Tie::File; my $fn = 'test.txt'; tie my @lines, 'Tie::File', $fn or die "could not tie file: $!"; untie @lines;

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• Codeigniter - Is it ok to add functionality to the constructor in controllers?

  - by Irro

  I'm making a project where I want the user to search for shops in different cities and would like the url to be like this: domain/shop/city/name. So I created a controller in codeigniter called Shop. But I cant create a city function since the city part of the url changes dependent on city name. One easy way to do it would be to add a function called "search" and add the functionality there but then I get url's like: domain/shop/search/city/name which I really would like to avoid. So my question is if it's ok to add my functionality directly into the constructor to avoid that extra "search" part in the url? I'm afraid that there might be some performance tricks involved that potentially keeps the class in memory so the constructor will not be called every time.

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• Using Components.utils.import in a firefox extension

  - by jamesatha

  I am trying to create some global variables in a firefox extension. In my content folder, I have two javascript files: 1) Main JS file that holds the functions for the different events, etc 2) A file that stores only an object with the pieces of state I want to maintain. Also, I set the array EXPORTED_SYMBOLS. I am having issues with the following line found in my main JS file: Components.utils.import("resource:///globalVariables.js"); When it is at the top of the file, nothing seems to work. If I move it into the function where I need the variable, the rest of my code works, but the function with this line does nothing. Any advice that would help me with this problem would be great. Thanks

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• jQuery - how to pass $(this) as an object?

  - by regan

  Hello! I'm trying to pass an object into a function but think there's a problem with $(this) not actually being valid at the point of passing it in. $('textarea#quote').live('bind',function(){ }).limit('10',$(this).parents('form').children().find('span#qc') ); The second parameter can be either a string or an object like $('span#qc'), but I also want to be able to pass in an object which references the current one. Why? Because I have several forms on same page, each containing textarea#quote, so depending on which form is selected I want to be able to reference a particular element within the same form. Anyone??

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• JQUERY ajax passing null value from MVC View to Controller

  - by Piyush Sardana

  hi guys i'm posting some data to controller using jquery ajax, but i am getting null values in my controller, jQuery code is: $('#registerCompOff').click(function() { var compOff = []; $('div').each(function() { var curRow = {}; curRow.Description = $(this).find('.reason').val(); curRow.CompOffDate = $(this).find('.datefieldWithWeekends').val(); if (curRow.Description != null && curRow.CompOffDate != null) { compOff.push(curRow); } }); $.ajax({ type: 'POST', url: this.href, dataType: 'json', data: compOff }); return $('form').valid(); });? compOff is not null I have checked that... controller is: [HttpPost] public ActionResult RegisterCompOff(RegisterCompOff[] registerCompOff) { //return View(); } can you tell me where i'm going wrong?

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• Unable to send an associative array in JSON format in Zend to client

  - by Anorflame

  Hi, In one of my actions in a controller, I'm using the json view helper to send back a response to an ajax request. On the client side I alert the data that is passed to the success callback function. It works fine as long as the response is a number or an array with default keys. Once I try to send an associative array, it alerts with [object Object]. Server code: $childArray = array('key'=>'value'); $this->_helper->json($childArray); javascript: function displayChildren(data){ alert(data); } ... $.ajax({ url: "/po/add", dataType: "json", data: {format: "json"}, success: displayChildren }); I have no idea what am I doing wrong here, so any help would be appreciated...

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• How prevent anyone from stealing my shared_ptr?

  - by Kyle

  So, I use boost::shared_ptr for all the various reference-counting benefits it provides -- reference counting for starters, obviously, but also the ability to copy, assign, and therefore store in STL Containers. The problem is, if I pass it to just one "malicious" function or object, the object can save the ptr and then I'll never be able to de-allocate it without the foreign function or object nicely relinquishing its ownership. Ultimately, I try to keep object ownership explicit. I accomplish this by having the owner keep the only shared_ptr to the object, and "guest" objects only store weak_ptrs to the object. I really don't want the "shared" part of shared_ptr, but I'm required to use shared_ptr in order to make weak_ptrs. I want to use scoped_ptr, but it's extremely limited since you can't copy it. You can't store it in a container, you can't lend out weak_ptrs from it, and you can't transfer ownership to a new manager. What's the solution?

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• Java Beginner Question : What is wrong with the code below ?

  - by happysoul

  public class Function { public static void main(String args[]) { System.out.println(power(3,2)); System.out.println(power(3,2)); System.out.println(power(2)); } public long power(int m) { return m*m; } public long power(int m,int n) { long product=1; for(int i=1;i<=n;i++) { product=product*m; } return product; } } Compiler displays this error :- Function.java:5: non-static method power(int,int) cannot be referenced from a static context

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• sigprocmask not working

  - by EpsilonVector

  I'm using sigprocmask as follows: void mask(){ sigset_t new_set,old_set; sigemptyset(&new_set); sigaddset(&new_set,SIGALRM); sigprocmask(SIG_BLOCK, &new_set, &old_set); } and to my surprise a function which prints a big list somehow gets interrupted by the signal, even though I invoke mask() at its beginning. It looks as if mask fails, since my function doesn't invoke any other functions and therefore nowhere in its run should an unmask() happen. What can cause sigprocmask to fail?

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• how ca i make Description panel to pause after it is shown on the slideshow?

  - by ershad

  I am new to Javascript. I have a slide show with images fading and description coming from left to right. I need to pause the description panel for some sec. How can i do that? The code is: showhidedescpanel:function(state, animateduration){ var setting=this.setting var endpoint=(state=="show")? setting.dimensions[1]-setting.panelwidth : this.setting.dimensions[1]-410 setting.$descpanel.stop().animate({left:endpoint}, (2000), function(){ if (setting.descreveal=="always" && state=="hide") setting.$restorebutton.css({visibility:'visible'}) //show restore button }) }

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