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• pointers for getting elements of an array in C

  - by Manolo

  I am a newbie in C and I would like to get the elements of an array with a function, I have tried different options, but I still do not get the elements. My function is: void getelements(int *a, int cl) { int *p; for (p=&a[0];p<&a[cl];p++) { printf("%d\n",*p); } } I know that the solution should work like that, but it only prints the first element and then memory positions. I am calling my function with: int v={10,12,20,34,45}; getelements(&v,5); Any help? I need to use arithmetic of pointers. Thanks

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• Clear the form once form submitted

  - by zurna

  Once the form submitted, response from another page is printed to #GameStorySys. But values entered to the form still stays there. Is it possible for the form values to disappear (but the form should still stay) once the form submitted? $("[name='GameStoryForm']").click(function() { $.ajax({ type: "POST", data: $("#GameStoryForm").serialize(), url: "content/commentary/index.cs.asp?Process=EditLiveCommentaryStory&CommentaryID=<%=Request.QueryString("CommentaryID")%>", success: function(output) { $('#GameStorySys').html(output); }, error: function(output) { $('#GameStorySys').html(output); } }); });

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• Setting an attribute in Jquery not working

  - by Probocop

  Hi, I have the following function which limits the amount of characters you can enter into a text area. What's meant to happen is, if the text length is higher than the text limit, set an attribute of disabled="disabled" on the submit button, but it isn't getting set, my function code is as follows: function limitChars(textid, limit, infodiv) { var text = $('#'+textid).val(); var textlength = text.length; if(textlength > limit) { $('#' + infodiv).html('You cannot write more then '+limit+' characters!'); $('input#submit').attr('disabled', 'disabled'); } else { $('#' + infodiv).html('You have '+ (limit - textlength) +' characters left.'); } } Any ideas?

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• What's the difference between => , ()=>, and Unit=>

  - by Malvolio

  I'm trying to represent a function that takes no arguments and returns no value (I'm simulating the setTimeout function in JavaScript, if you must know.) case class Scheduled(time : Int, callback : => Unit) doesn't compile, saying " `val' parameters may not be call-by-name" case class Scheduled(time : Int, callback : () => Unit) compiles, but has to be invoked strangely, instead of Scheduled(40, { println("x") } ) I have to do this Scheduled(40, { () => println("x") } ) What also works is class Scheduled(time : Int, callback : Unit => Unit) but is invoked in an even-less-sensible way Scheduled(40, { x : Unit => println("x") } ) (What would a variable of type Unit be?) What I want of course is a constructor that can be invoke the way I would invoke it if it were an ordinary function: Scheduled(40, println("x") ) Give baby his bottle!

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• How to address thread-safety of service data used for maintaining static local variables in C++?

  - by sharptooth

  Consider the following scenario. We have a C++ function with a static local variable: void function() { static int variable = obtain(); //blahblablah } the function needs to be called from multiple threads concurrently, so we add a critical section to avoid concurrent access to the static local: void functionThreadSafe() { CriticalSectionLockClass lock( criticalSection ); static int variable = obtain(); //blahblablah } but will this be enough? I mean there's some magic that makes the variable being initialized no more than once. So there's some service data maintained by the runtime that indicates whether each static local has already been initialized. Will the critical section in the above code protect that service data as well? Is any extra protection required for this scenario?

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• Unable to capture the id of div clicked

  - by user3674364

  This is my jsfiddle http://jsfiddle.net/6TUtw/4/ How can i register for the event div click , so that i can get the name i have tried with different things , but none of them worked . $('#tabs div').click(function() { var elem = $(this); alert(elem); }); $('#tabs').on('click', 'div.click', function () { var elem = $(this); alert(elem); }); $("#tabs").click(function(){ var elem = $(this); alert(elem); });

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• Javascript - use to load xml data from URL

  - by spenf

  I have this url with some xml data in it: http://64.182.231.116/~spencerf/union_college/Upperclass_Sample_Menu.xml And I would like to load this xml data into my javascript script so I can parse it. I am using parse.com Javascript SDK, in there cloud code. Here is the code I have tried: Parse.Cloud.define("next", function(request, response) { response.success("Hello world!"); $.ajax({ url: 'http://64.182.231.116/~spencerf/union_college/Upperclass_Sample_Menu.xml', // name of file you want to parse dataType: "xml", // type of file you are trying to read success: parse, // name of the function to call upon success error: function(){alert("Error: Something went wrong");} }); }); But when I run this I get an error: $ is not defined at main.js:

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• Is it possible to append html code in parts via JQuery?

  - by phpheini

  I am trying to append li elements coming from a php file with JQuery. Problem is that the html code needs to be seperately appended to different html IDs according to the key value. Unfortunately as I understood append() can only append correct html with all elements closed. Otherwise it will automatically close the tags. The following code will NOT work as dval contains code like <div><li class="some">Some value</li> and append() will make <div><li class="some">Some value</li></div> out of it. So I was wondering whether there is another way, maybe a function other than append() to be able to append html parts? $.each(obj, function(key,val) { $.each(obj[key], function(key, dval) { if(key == "text") { $("#" + key).append(dval); } }) });

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• AJAX with jQuery not returning data

  - by James P

  This is my Javascript: $(document).ready(function() { $('#like').bind('keydown', function(e) { if(e.keyCode == 13) { var likeMsg = $('#like').val(); if(likeMsg) { // Send the AJAX request to like.php $.ajax({ url: 'like.php', success: function(data) { alert('Content: ' + data); } }); } } }); }); And this is my like.php file: <?php echo "It works! :)"; ?> When I press enter on the #like input, it seems the AJAX request is sent and an alert box comes up saying: Content:, but there's no data being sent back from like.php... I have checked if the file exists and if it's in the same directory and whatever and it is, so I'm pretty much clueless atm. Does anyone know what could be wrong here? Cheers.

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• getElementById does return null

  - by pbcoder

  I have following function: $('canvas').createWindow('xyz', 500, 600); And js-code behind is: var $ = function(element) { if (this.constructor !== $) { return new $(element); } alert(element); var windowObj = document.getElementById(element); this.createWindow = function(src, width, height) { if(width != "" && height != "") { windowWidth = windowObj.style.width = width + 'px'; windowHeight = windowObj.style.height = height + 'px'; } }; }; But the problem is that JS says windowObj is null, alert(element) works fine! Thanks for your help!

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• crontable OR conditions

  - by matt

  Crontable parameters seem to function as 'ands' conditions. So the example 0 9-5 * * 1-5 Runs when the conditions are met "minute is zero AND hour is between 9 and 5 AND day is between monday and friday". What I'd like is an 'or' function, so I can say "run monday to friday OR the 8th day of the month". Does such a thing exist? I realise you could add two entries, but with lots of entries it adds something to forget.

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• post selextbox values to php page in jquery

  - by JPro

  I am using jquery button click to post all the values in a selectbox to a PHP page, but this code does not seem to work. Can anyone please help? <script type="text/javascript"> $(function() { $("#btn1").click(function () { var arr= new Array; $("#target_select option").each (function () { // You can push the array on an array arr.push( $(this).val() ); //alert( $(this).val() ); not getting the alert to display too }); $.post("test.php", { name: arr } ); }); }); </script> Generate

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• Resetting Qt Style Sheet

  - by mree

  I've managed to style my QLineEdit to something like this: void Utilities::setFormErrorStyle(QLineEdit *lineEdit) { lineEdit->setStyleSheet( "background-color: #FF8A8A;" "background-image: url(:/resources/warning.png);" "background-position: right center;" "background-repeat: no-repeat;" ""); } I called the function using Utilities *util = new Utilities; util->setFormErrorStyle(lineNoStaf); The flow should be something like this: User open form User fill data User submit data Got error Use setFormErrorStyle() User edit the text in the QLineEdit and the style disappear This function should be reusable over and over again, but how can I connect QLineEdit signal such as textChanged() to a function in other class that will reset the Style Sheet and then disconnect the signal so that it won't be running continuously every time the text changed ?

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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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• Do i need a hashtag in Javascript to pass as a Div

  - by Mike

  How do i insert this php DivSomething into Javascript? Since Javascript needs a hashtag to recognize that as a div. Is there a way to tell JS that this is a Div or there's other better way to do it? Any help would be very much appreciated. <script> /*How do i insert a var DivSomething into JS with a hashtag */ /* DivSomething is php dynamic. It returns a Div. It can be #Div1, #Div2, #Div3... */ var DivSomething = '<?php echo $Highlight; ?>' $(function() { $('#MouseHere').hover(function() { $('#' + DivSomething).css('background-color', '#ffffff'); }, function() { // on mouseout, reset the background colour $('#' + DivSomething).css('background-color', ''); </script>

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• Cannot get disable button to work.

  - by Scarface

  Hey guys, quick question, I have this javascript/jquery function that basically wraps an input in image brackets, and the first part of the function works, but the button does not disable after and I cannot figure out why (last line does not work). If anyone has an idea, let me know. Thanks in advance. <input id="2image" type="button" value="Attach" onclick="imageid('message')"> <script> function imageid(input) { var obj=document.getElementById(input); obj.value+="[image]image[/image]"; $("#2image").attr({ disabled:true, value:"Inserted" }); } </script>

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• How to perform .select() on jQuery masked text input

  - by dllhell

  I'm using http://digitalbush.com/projects/masked-input-plugin/ plugin. There is an input text with defined mask: <input type="text" id="txtMyInput" class="FocusSense"/> and a script: $(document).ready(function () { jQuery(function ($) { $("#txtMyInput").mask("?9.99"); }); $(".FocusSense").focus(function () { this.select(); }); }) As you can see, I would like select all in txtMyInput on focus but but alas! On focus, mask appears and loose .select(). What should I do to preserve mask and .select()?

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• JButtons don't imediatly change on mouse event

  - by out_sider

  I'm using the java swing library to develop a board game called DAO. The problem is that after the human player makes its move, by clicking on the JButton with the piece image that he wants to play, I call the computer AI routine but inside the mouse event function. By doing this only when the function returns, the computer ends its turn, do the JButtons refresh their Images (setIcon comes in). I'd like to know how can I force the JButtons to change their image at the moment they are clicked and not only when the mouse event function ends (as I need to handle data inside it). I've tried all of this myButtons[i][j].setIcon(xIcon); myButtons[i][j].revalidate(); myButtons[i][j].repaint(); myButtons[i][j].validate(); None worked. Thx in advance

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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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• javascript / jQuery variable problem (possibly caching issue)

  - by waitinforatrain

  Standard AJAX query with jQuery: var globalTitle = ""; var pages = ["a", "b", "c"]; for (var i = 0; i < pages.length; i++) { createpage(pages[i]); } function createpage(title) { globalTitle=title; console.log (globalTitle); //All looks good here $.ajax({ url: "createpage.php?id=" + title, context: document.body, success: success }); } The success() function uses globaltitle which is why I had to declare it global. In the success() function though console.log (globalTitle); constantly gives me "a". It's like the variable is assigned but is then cached every time success() is called. Happens in FF 4 and Chrome 8. Any thoughts?

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• why are javascript functions like this

  - by Kajal

  I am a starter to javascript. I know to write JS userdefined functions. But recently I came across some thing that I can’t recognize. Can anyone explain to me what this is? (function( window, undefined ) { var jQuery = (function() { }); window.jQuery = window.$ = jQuery; })(window); What is the meaning of this? When I Google javascript functions I am getting only function foo(){ alert("This is an alert"); } I know to use these type of functions

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• How to remove [^a-z\s] in C++

  - by Steven

  So far I have: int SimplifyText(char chars[], int length) { //To lower for(int i=0; i<length; i++) { chars[i] = tolower(chars[i]); } This function simplifies the text in the first argument which is an array containing the number of characters as given in the second argument The requirements are: tolower all remove all non-alpha characters replace multiple whitespace by one blank. Any leading whitespace at the beginning of the array should be removed completely. The resulting number of characters should be returned as the value of the function. And the annoying part: Another array cannot appear in the function Cannot use strings, only char arrays. Cannot using G++'s extension for setting an array size using a variable. Oh and can't use regex :) I'm stuck with this, any help would be great. :)

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• jqeury select list item entering problem

  - by mazhar

  $().ready(function() { $('#remove').click(function() { return !$('#FeatureLists option:selected').remove(); }); $("#add").click(function() { var vals = $("#txtaddfeature").val(); if(vals !='') $("#FeatureLists").prepend("" + vals + ""); $("#txtaddfeature").val()="" }); }); the thing is that if i enter Add it will go into the option without any problem, but if i enter Manage People only Manage will go as there is a space gap between Manage and People . how will i solve this bug?

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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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• Vew not updating after scope update

  - by bsparacino

  Here is a very simple example of what I am trying to do Athlete.save(athlete,function(result) { $scope.athlete = result.athlete; }); The issue is that the $scope.athlete variable does not update in my view. In order to get it to update I have to do this Athlete.save(athlete,function(result) { $scope.athlete.fname = result.athlete.fname; $scope.athlete.lname= result.athlete.lname; $scope.athlete.gender= result.athlete.gender; .... }); This gets annoying very quickly. With the first block of code it's as if angular does not know that my $scope.athlete variable has been updated. This function is triggered from an ng-click, not some jquery call, I am doing it the angular way as far as I know. here is a simpler case I made: http://plnkr.co/edit/lMCPbzqDOoa5K4GXGhCp

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