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• C++ rvalue temporaries in template

  - by aaa

  hello. Can you please explain me the difference between mechanism of the following: int function(); template<class T> void function2(T&); void main() { function2(function()); // compiler error, instantiated as int & const int& v = function(); function2(v); // okay, instantiated as const int& } is my reasoning correct with respect to instantiation? why is not first instantiated as const T&? Thank you

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• Why is it not displaying

  - by Doug

  My fieldset doesn't display onclick, what am I doing wrong? $(document).ready(function(){ $('#More').toggle( function() { $('#search', this).slideDown(); }, function() { $('#search', this).slideUp(); }); }); <div> Item 1 <a href="#" id="More">Item 2</a> Item 3 <fieldset id="search" style="display: none;"> <form> <input type="text"> </form> </fieldset> </div>

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• How is this regex wrong?

  - by Spot

  I have a regex which I'm using to match user functions inside an IDE (Sublime). This matches what I want (the function name itself), but it also matches the first parentheses. Therefore the match is like follows: this._myFunction('content'); Notice the opening paran. Here is my expression: (?:[^\._])?([\w-]+)(?:[\(]){1} How can I exclude the opening paran from getting matched? . As a bonus question: How can I successfully not match the string: function, because as you can expect function( matches (not fun in JS). Thank you to anyone who can assist.

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• jQuery: Replace strings with .each()

  - by Warrantica

  I want a function that replace each li with an image. This is my code: $(document).ready(function(){ var tmphref; var tmpname; var str = '<a href="' + tmphref + '"><img src="http://www.somesite.com/a/' + tmpname[1] + '/avatar-small.jpg /></a>'; $('#somediv li a').each(function(){ tmphref = $(this).attr("href"); tmpname = /http\:\/\/(\w+)\.somesite\.com\//.exec(tmphref); $(this).parent().replaceWith(str); }); }); The image is in this specific path: www.somesite.com/a/username/avatar-small.jpg The code above doesn't work. Any ideas? Thank you in advance.

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• Problems making an accurate Visual Studio scheme for Vim (vim scheme specialist needed) .

  - by janoChen

  I'm trying to make an accurate Visual Studio scheme. I set hi function to blood color (#9A1102) for the "CSS function" (selector). But now the brackets with properties (id, class) in html elements also have blood color: (ironically the same color here in Stackoverflow). But I want them blue (#2902FC) e.g.: <div class="first"> <div id="nopic"> Sample of code: " Syntax highlighting hi Comment guifg=#777777 gui=none hi Todo guifg=#8f8f8f gui=none hi Constant guifg=#e5786d gui=none hi String guifg=#2902FC gui=none hi Identifier guifg=#2902FC gui=none hi Function guifg=#9A1102 gui=none hi Type guifg=#EF2811 gui=none hi Statement guifg=#9A1102 gui=none hi Keyword guifg=#9A1102 gui=none hi PreProc guifg=#2902FC gui=none hi Number guifg=#2902FC gui=none hi Special guifg=#2902FC gui=none " Bottom hi Question guifg=white gui=none hi Question ctermfg=white term=none hi ModeMsg guifg=white gui=none

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• jQuery clone( true ) not working with dynamic elements

  - by elclanrs

  Take the following example: $.fn.foo = function() { var $input = $('<input type="text"/>'); var $button_one = $('<button>One</button>'); var $button_two = $('<button>Two</button>'); $button_one.click(function(){ $input.val('hey'); }); $button_two.click(function(){ $input.replaceWith( $input.val('').clone( true ) ); }); this.append($input, $button_one, $button_two); }; Check the demo: http://jsbin.com/ezexah/1/edit Now click "one" and you should see "hey" in the input. Next click "two" and then click "one" again and it doesn't work. Even using the true option in clone to copy all events it still does not work. Any ideas?

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• Bash file descriptor leak

  - by Charles Duffy

  I get a file descriptor leak when running the following code: function get_fd_count() { local fds cd /proc/$$/fd; fds=( * ) # avoid a StackOverflow source colorizer bug echo "${#fds[@]}" } function fd_leak_func() { echo ">> Current FDs: $(get_fd_count)" read retval new_state < <(set +e; new_state=$(echo foo); retval=$?; printf "%d %s\n" $retval $new_state) } function parent_func() { while fd_leak_func; do :; done } parent_func Tested on both 3.2.25 and 4.0.28. Taking the while loop out of parent_func and running it at top level makes the problem go away. What's going on here? More to the point, are workarounds available?

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• Form validation in JAvascript with Regexp

  - by Nikita Barsukov

  I have a webpage with an input field where only digits are allowed. The input field has an onkeyup event that starts this validating function: function validate() { var uah_amount = document.getElementById("UAH").value; var allowed = /^\d+$/; document.getElementById("error").innerHTML = document.getElementById("UAH").value; if (!allowed.test(uah_amount)) { document.getElementById("error").style.backgroundColor = "red"; } } Everything works as I expect until I hit Backspace button to remove some characters. In this case function always behaves as if I entered letters. How to correct this?

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• Executing functions in series

  - by Latanmos

  Hi, First of all... Happy new year! Could you please explain to me, how does this work? I browsed throught Connect's (https://github.com/senchalabs/connect) source code, but I don't get it. I would like to write it by myself. app.get( '/', function(req, res, next) { // Set variable req.var = 'Happy new year!'; // Go to next function next(); }, function(req, res, next) { // Returns 'Happy new year!' console.log(req.var); // <- HOW IS THIS POSSIBLE? // (...) } ); Thanks in advance!

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• Toggeling between image

  - by Binaryrespawn

  Hi all, I have two images with which I am using in an anchor tag. I am using jquery toggle on the click event of the anchor tag to swap between images. $(document).ready(function(){ $('#registrationForm').hide(); $('#callform').append("<a id='formlink'>IMAGE 1</a>"); $("#formlink").click(function(){ $('#registrationForm').toggle(function(){ $('#formlink').empty().append(IMAGE 2); }); }); }); This works fine the first time around, however i want to toggle between the two images whenever the other is clicked. Any ideas ?

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• PHP: Remove all fcn not acting as expected, Code Inside

  - by Josh K

  I made this simple function (remove all $elem from $array): function remall($array, $elem) { for($i=0; $i < count($array); $i++) if($array[$i] == $elem) unset($array[$i]); $newarray = array_values($array); return $newarray; } But it isn't working perfectly, here are some inputs and outputs $u = array(1, 7, 2, 7, 3, 7, 4, 7, 5, 7, 6, 7); $r = remall($u, 7); Output of $r: 12345767 $n = array(7, 7, 1, 7, 3, 4, 6, 7, 2, 3, 1, -3, 10, 11, 7, 7, 7, 2, 7); $r = remall($n, 7); Output of $r: 1346231-30117727 Notice how there are still 7s in my outputs. Also, My function will only be removing numbers from an array. Let me know if you spot something, thanks.

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• call .js file after ajax load

  - by asovgir

  I am trying to apply a .js file to a page I loaded via ajax (since ajax automatically strips the content of all the javascript). var url; var textUrl = 'local/file.js'; $('a').click(function() { url = $(this).attr('href'); $('.secondaryDiv').load(url, function() { $.getScript(textUrl, function(data, textStatus, jqxhr) { console.log(data); //data returned from getScript console.log(textStatus); //return "success" console.log(jqxhr.status); //200 }); }); return false; }); Am I approaching this the right way? I tried everything I could think of and I can't get it to work

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• Showing val as html inside of a div in real time.

  - by smudge

  I'm using the following in order to have on screen display of each value of a checkbox that's selected with great results when it's displayed inside a textbox. I'd like to change it so that I can show a real time display in a div as html instead of a textbox. A link to a working demo is here and below is the script. I know it's probably a basic line or two but i'm still learning and new. thanks! function updateTextArea() { var allVals = []; $('#c_b :checked').each(function() { allVals.push($(this).val()); }); $('#t').val(allVals) } $(function() { $('#c_b input').click(updateTextArea); updateTextArea(); });

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• Jquery ajax and php die()

  - by BizMark

  Hi, I have an IE problem. I am using the jquery ajax method to call a php script. The php script just calls die(). In firefox, the error message is displayed, but in IE the success message is displayed without any data. I would prefer the error function to be called. Is there any way to fix this? I'm guessing my javascript code needs change somehow. Thanks! <?php die() ?> $.ajax({ url: "phps/php.php?id="+the_id, dataType: "json", error: function(){ alert('error'); }, success: function(data){ alert("SUCCESS"); } });

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• jquery: nested tags and hover() not working in IE

  - by mafka

  hello folks! i have a construction like this: <div id="container"> <span> <span></span> </span> <span> <span></span> </span> </div> i need to catch the mouseout event of the container, so i made jquery do this: $("#container").hover('',function(){ alert("Out"); }); In Firefox / Opera, it only fires the mouseout-function when leaving the div (how I want it). In IE it fires the mouseout-function at every -Tag inside of the div the mouse hits. (maybe important is, that the span tags have also mouseover and out events) Anyone has an idea how to solve this? (The nested structure cant be changed because a complex layout) thx4 any ideas!

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• In C++, I want to implement a ring iterator for a deque that contains a personally defined class.

  - by George

  I have a function of a "Table" class that should add a player to the table. I decided that if the seat is taken, the function should try and go through all the seats and add the player to the next available seat. How do I implement this in my addPlayer function? int Table::addPlayer(Player player, int position) { deque<Player>::iterator it; if(playerList[position] != "(empty seat)") { //What goes here? } playerList.put(player,it); cout >> "Player " >> player.toString >> " sits at position " >> position >> endl; }

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• Get the javascript variable in formsubmit

  - by Sakthivel

  HI friends i have the issue in screen scrapping , in the page the links are available as follows , <a id="linkbuttonAlphaA" href="javascript:__doPostBack('linkbuttonAlphaA','')">A</a> <a id="linkbuttonAlphaB" href="javascript:__doPostBack('linkbuttonAlphaB','')">B</a> <a id ="linkbuttonAlphaC"ref="javascript:__doPostBack('linkbuttonAlphaC','')">C</a> and the __doPostBack function contains this function __doPostBack(eventTarget, eventArgument) { if (!theForm.onsubmit || (theForm.onsubmit() != false)) { theForm.__EVENTTARGET.value = eventTarget; theForm.__EVENTARGUMENT.value = eventArgument; theForm.submit(); } in this is it possible to set the eventtarget and eventArgumnet manually ? that means by passing that values in URL and call the __doPostBack function ? Please help me to find out this . Thanks in advance.

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• How do i loop an ajax request (using jquery) and jsp

  - by Mrshll187

  <script> //when page is ready do the following $(document).ready(function() { //set interval of refresh setInterval(doAjaxMethod, 1000); }); function doAjaxMethod(id) { $.ajax({ url: "getStatus/"+id, dataType: "json", success: function(json) { $('#ajaxStatus').html(json.status); } }); </script> <% //How can I do something like this int n = object.size(); for(int i=0; i<n; i++) { doAjaxMethod(object.getId()); } %> <div id=ajaxStatus> status updates here </div>

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• How to re-open a closed file descriptor

  - by chaitu

  I have a scenario where i created pipe for communication between two child and parent. Parent writes (using write function)data to the pipe and closes the respective file descriptor. The problem is when i want to write data again to the pipe, the write function is returning error code -1. I think its because writing end has been closed in previous iteration. Then how to open the corresponding file descriptor after it has been closed once. I tried using open() function which requires path to some file as arguement. But i am not using any files in my application. I have simple file descriptors (int arr[2]). Is it possible to achieve above scenario with pipes????

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• javascript:anchor tag problem

  - by Raam

  function main(){ var delImage=document.createElement("img"); delImage.setAttribute("alt","Edit"); delImage.setAttribute("src","drop.png"); var position=newRow.rowIndex; var typeElem=document.createElement("a"); typeElem.setAttribute("name","delete"); typeElem.setAttribute("href","#"); typeElem.appendChild(delImage); typeElem.setAttribute('onclick',"delete(position)"); newRow.insertCell(lastCell).appendChild(typeElem); } function delete(pos){ alert(pos); } i am not able to call the delete function when anchor tag was clicked...what can i want to change to achieve this?

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• how to deal with async calls in Ajax 4.0(using jquery?)

  - by dexter

  in my code i have done something like this. $.get('/Home/Module/Submit', { moduleName: ModName, moduleParameters: moduleParameters }, function(result) { $("#" + target).html(result); }); when i put alert in the function(result) {..} it shows html perfectly(both in alert and at the 'target'-on the .aspx page) BUT when i remove the alert.. on the page the 'html' don't appear or appear randomly (this method is called multiple times) i think that the 'result' comes to function asynchronously thats why it is not bind with the respective 'div' however in the last iteration it gets bind every time. can we make process stop until data gets bind? or is there any functionality (like alert) which can make data bind.. without disturbing UI (unlike alert)?

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• jQuery is only returning first item

  - by Andy

  For some strange reason, whenever I have a selector and expect to get multiple items, jQuery is only returning the first item, instead of the entire collection. This is the HTML I have: <a id="reply-424880" class="reply" href="#" rel="nofollow">Reply</a> <a id="reply-424885" class="reply" href="#" rel="nofollow">Reply</a> And the selector: $('.reply').unbind('click').click(function(event) { ... } I have tried debugging using FireBug, and still get the same results. Using the work around I can get it to work: $('a').each(function (index, element) { if ($(element).attr('class') == 'reply') { $(this).unbind('click').click(function(event) { ... }); } }); I would like to use the built-in functionality instead of my work around. Any idea why only the first element would be returned?

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• How can I pass select field ID and its value to ajax without having any form?

  - by user3766078

  I have a select field which has ID name as 'region_code' well as its value. And I want pass ID in ajax. As you can see below, the input field is not included in any form. It has a value and the ID Is it possible to get value in ajax as shown below? echo '<select id="region_code" onchange="show_region_code();">'; $result = mysql_query("SELECT region_code, region_name FROM list_region"); while($rows = mysql_fetch_array($result)) { echo "<option value=\"$rows[0]\">".$rows["1"].'</option>'; } echo '</select>'; My ajax function as below function show_region_code() { var region_code = $("#region_code").val(); $.ajax ({ type: "POST", url: "show_region_code.php", data: { region_code1: region_code }, success: function(data) { $("#region_code").html(data); } }); }

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• Nesting if else statements in PHP to validate a URL

  - by John

  I'm currently writing up a function in order to validate a URL by exploding it into different parts and matching those parts with strings I've defined. This is the function I'm using so far: function validTnet($tnet_url) { $tnet_2 = "defined2"; $tnet_3 = "defined3"; $tnet_5 = "defined5"; $tnet_7 = ""; if($exp_url[2] == $tnet_2) { #show true, proceed to next validation if($exp_url[3] == $tnet_3) { #true, and next if($exp_url[5] == $tnet_5) { #true, and last if($exp_url[7] == $tnet_7) { #true, valid } } } } else { echo "failed on tnet_2"; } } For some reason I'm unable to think of the way to code (or search for the proper term) of how to break out of the if statements that are nested. What I would like to do check each part of the URL, starting with $tnet_2, and if it fails one of the checks ($tnet_2, $tnet_3, $tnet_5 or $tnet_7), output that it fails, and break out of the if statement. Is there an easy way to accomplish this using some of the code I have already?

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• How to efficiently render different things at different times in a game?

  - by Baqjohanson

  Sorry for the ambiguous title. What I am wondering is what is an efficient way to alternate rendering between lets say a main menu, options menu, and "in the game." The only two ways I've come up with so far are to have 1 render function, with code for each part (menu, ...) and a variable to control what gets drawn, or to have multiple render functions, and use a function pointer to point to the appropriate one, and then just call the function pointer. I always wonder how more professional games do it.

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