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  • Are protected constructors considered good practice?

    - by Álvaro G. Vicario
    I'm writing some little helper classes to handle trees. Basically, I have a node and a special root node that represents the tree. I want to keep it generic and simple. This is part of the code: <?php class Tree extends TreeNode{ public function addById($node_id, $parent_id, $generic_content){ if( $parent = $this->findNodeById($parent_id) ){ $parent->addChildById($node_id, $generic_content); } } } class TreeNode{ public function __construct($node_id, $parent_id, $generic_content){ // ... } protected function addChildById($node_id, $generic_content){ $this->children[] = new TreeNode($this->node_id, $node_id, $generic_content); } } $Categories = new Tree; $Categories->addById(1, NULL, $foo); $Categories->addById(2, NULL, $bar); $Categories->addById(3, 1, $gee); ?> My questions: Is it sensible to force TreeNode instances to be created through TreeNode::addById()? If it's so, would it be good practise to declare TreeNode::__construct() as private/protected?

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  • problem in reading textbox value in li

    - by user269431
    I have a ul as follows: It can`t read the text values neither with val() nor text(). Can anyone help please <ul id="mylist"> <li id="1"><input type = "text" value= "aaaaa" /></li> <li id="2"><input type = "text" value= "bbbb" /></li> <li id="3"><input type = "text" value= "ccc" /></li> <li id="5"><input type = "text" value= "dddd" /></li> </ul><button id="Button1">Add Another2</button> var values = []; $(document).ready(function() { $("#Button1").click(function() { $( "#mylist li text").each(function() { alert($(this).text()); values.push($(this).text()); }); }); });

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  • Why does this bash command take up all space on device?

    - by chelmertz
    Hey! I'm a little new on searching via bash, so feel free to give me suggestions on the methods to use instead of this, which I'll never use again :) I'm searching for occurances of a string, recursively in a directory, with ~50 not-that-large php-files in it; some in current directory, some in directories beneath current dir, three levels of directories down at most. The method I'm using is: find . | xargs grep "module" > module.txt When in simple (one level) directories, this works fine, but in this case, the file became 4 GB large until it filled up all space on the partition :) It wasn't even done yet.. Would someone educate me so I won't embarass myself again?

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  • using spl_autoload_register to load classes that extends to another class

    - by Fred Gustavo
    Well, i got this oop: abstract class TestSystemUtils { abstract public function __run(); /* utils funcs */ } class TestSystem extends TestSystemUtils { protected $body; protected $out; function __construct() { } public function __run() { } } I got a directory with many modules, each module is a class that extends TestSystem but i don't want to include all them modules then in method __run i make a dbconnection get these modules that will be used, but in this point idk the right way to 'include' these files i can use __autoload func but idk if i should call these classes inside the class TestSystem or not, all modules need to use these two variables 'body' and 'out' ... Well what's the right way to do it? someone could help me please. Module classes look like: class mod01 extends TestSystem { } thanks.

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  • Javascript hasOwnProperty does not work under Google Chrome

    - by WebRookie
    I am currently working with some help and it has been going well, until this incident. function runCommand(commandString) { commands = new Object(); commands.clear = function(){ $('#terminal').html('') } parameters = commandString.split(" "); command = parameters.shift(); if( commands.hasOwnProperty(command)){ commandscommand; } else { $('#terminal').append(command+' command not recognized.'+''); } } The person who was helping me made this function, so I could run the "terminal-like" browsers that I needed to work on. It works fine when using Firefox, heres an example: guest@shell:/$ sudo make me sandwich sudo command not recognized. guest@shell:/$ clear *clears* guest@shell:/$ clear But under google chrome this happen: guest@shell:/$ sudo make me sandwich sudo command not recognized. guest@shell:/$ clear clear command not recognized. I believe that it has something to do with "commands.hasOwnProperty(command)" that is preventing it from working properly. I am using JQuery the javascript library to build the website, and I need to know how to solve this problem, or an alternative.

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  • How do I change the style of an input box in IE7 on focus?

    - by Cen
    I know IE7 has issues... I've read posts here and on Google telling me I need to set the style by hand onfocus() and onblur(). However, everything I try isn't working! Here is my jQuery $(document).ready(function(){ if (jQuery.browser.msie === true) { $("input.date-picker").each(function(i) { var $foo= $(this); $foo.bind('onfocus onblur', function() { $(this).toggleClass('smalltxt-active'); }); }); }//end if }); The a corresponding box <input name="ctl00$SelectionContent$Selections1$txtDestinationDate" type="text" id="ctl00_SelectionContent_Selections1_txtDestinationDate" class="date-picker" style="width:80px;" /> I have already confirmed that my code is detecting MSIE. That I am getting a count of 2 input.date-picker objects. Any ideas? Thanks in advance,

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  • Why am I getting a "skipping broken view error" ?

    - by user363036
    This is Drupal 6.x and am having a nightmare of a time to modify a simple drupal form. This is a module file. function modulename_menu() { $items = array(); $items['school/registration'] = array( 'title' = 'Registration Form', 'page callback' ='drupal_get_form', 'type' = MENU_CALLBACK ); return $items; }//end of the function function modulename_school_form_alter(&$form, $form_state, $form_id) { // dsm($form_id); if ($form_id == 'user_registration_form') { // modify the "#submit" form property by prepending another submit handler arra $form['#submit'] = array_merge( array('_modulename_registration_submit' = array()), $form['#submit'] ); } }

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  • How to run shell script with live feedback from PHP?

    - by Highway of Life
    How would I execute a shell script from PHP while giving constant/live feedback to the browser? I understand from the system function documentation: The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module. I'm not clear on what they mean by running it as a 'server module'. I attempted to run the script in the cgi-bin, but either I'm doing it wrong, or that's not what they mean. Example PHP code: <?php system('/var/lib/script_test.sh'); Example shell code: #!/bin/bash echo "Start..." for i in {1..10} do echo "$i..." sleep 1 done echo "Done."

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  • C++: How would I get unix time?

    - by John D.
    I need a function or way to get the UNIX epoch in seconds, much like how I can in PHP using the time function. I can't find any method except the time() in ctime which seems to only output a formatted date, or the clock() function which has seconds but seems to always be a multiple of 1 million, nothing with any resolution. I wish to measure execution time in a program, I just wanted to calculate the diff between start and end; how would a C++ programmer do this? EDIT: time() and difftime only allow resolution by seconds, not ms or anything too btw.

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  • How to debug this?

    - by LeonixSolutions
    I have an application which takes measurements every second (I am running it in demo mode & generating random data, so the problem is not to do with reading from devices attached to the serial port). After 5 or 6 minutes it hangs. I have added try // entire body of procedure/function goes here except on E: Exception do begin MessageDlg('Internal coding error in <function name>()', mtError, [mbOK], 0); end; end; to every single function (and Application.Run() in the project file), but I don't see any message dialogs. Any idea how I can test this?

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  • YAHOO.util.Connect.asyncRequest does not work in Safari

    - by 24x7Programmer
    When I request a webpage using YAHOO.util.Connect.asyncRequest in Safari I always get Communication Failure message in callback's failure properties statusText. The same method works in IE. What could be wrong here? Here is the code. When the code is executed I always get two alerts: "Three" and "communications failure undefined" (corresponding to the second alert in the failure part below.) Also when I attach the debugger and put break point in the SAProvision.aspx's page load event, the break point is not hit. So it is sure that in safari the page is not being called. While the same is called when executed from IE. function ProvisionBlade() { var path = "http://localhost/SC/Dashboard/SAProvision.aspx" YAHOO.util.Connect.asyncRequest("POST", path, callbacks1, null); } var callbacks1 = { success: function(o) { var check = "test"; alert(o.responseText); }, failure: function(o) { alert("Three"); alert(o.statusText + ' ' + o.responseText); } }

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  • How to convert from integer to unsigned char in C, given integers larger than 256?

    - by Alf_InPogform
    As part of my CS course I've been given some functions to use. One of these functions takes a pointer to unsigned chars to write some data to a file (I have to use this function, so I can't just make my own purpose built function that works differently BTW). I need to write an array of integers whose values can be up to 4095 using this function (that only takes unsigned chars). However am I right in thinking that an unsigned char can only have a max value of 256 because it is 1 byte long? I therefore need to use 4 unsigned chars for every integer? But casting doesn't seem to work with larger values for the integer. Does anyone have any idea how best to convert an array of integers to unsigned chars?

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  • Jquery how to test if current hovered div is eq(x)

    - by j-man86
    Hi all! I am trying to create a jQuery hover function that will highlight a different section of the page depending on what number EQ (index position number) the div is. $('#photoContent div').hoverIntent(function () { if( $(this).filter(':lt(5)') ) { $('#photoSidebar').find('p:eq(0)').addClass('currentPhoto'); } if( $(this).filter(':gt(5)') ) { $('#photoSidebar').find('p:eq(1)').addClass('currentPhoto'); } }, function () { $('#photoSidebar').find('p').removeClass('currentPhoto'); }); The above code obviously does not work, but the concept/functionality is what I'm going for. Thanks for your help!

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  • jQuery $.data(): Possible misuse?

    - by Rosarch
    Perhaps I'm using $.data incorrectly. Assigning the data: var course_li = sprintf('<li class="draggable course">%s</li>', course["fields"]["name"]); $(course_li).data('pk', course['pk']); alert(course['pk']); // shows a correct value Moving the li to a different ul: function moveToTerm(item, term) { item.fadeOut(function() { item.appendTo(term).fadeIn(); }); } Trying to access the data later: $.each($(term).children(".course"), function(index, course) { var pk = $(course).data('pk'); // pk is undefined courses.push(pk); }); What am I doing wrong? I have confirmed that the course li on which I am setting the data is the same as the one on which I am looking for it. (Unless I'm messing that up by calling appendTo() on it?)

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  • Any way to set or overwrite the __line__ and __file__ metadata?

    - by charles.merriam
    I'm writing some code that needs to change function signatures. Right now, I'm using Simionato's FunctionMaker class, which uses the (hacky) inspect module, and does a compile. Unfortunately, this still loses the line and file metadata. Does anyone know: If it is possible to overwrite these values in some odd way? If hacking up a class with a complex getattribute() to intercept the values and also try to make the class looks like a function is any more possible than a moose with a flying nun hat? Is there an alternative to the (hacky) inspect module? PEP 362 is dead dead dead? I know decorators and cPickle users fight with this. What other situations is the read only metadata in people's way? I appreciate any insights. Thank you.

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  • JQuery Dynamic Element - In DOM but unable to bind

    - by Grant80
    Hi All, I'm new to using JQuery so bear with me. I had implmented some code based on a js file that I found online which enables a series of div tags within a nested structure on my page to step through and show each one individually on the page. This all works great when I define the div tags as static entries in the masterpage. I should add that this is being implemented in a SharePoint master page. Ultimately though, with a static collection of div tags ideally containing an image with some descriptive text, and a hyperlink its not very flexible. Roll on my changes to make this a little more configurable. I have implemented some additional code that will read from a SharePoint list via an ajax call to the lists web service. For each entry in the list I am building a div tag that contains the information required dynamically. For testing, I am only pulling the title through at present. I have used the following code: $('#beltDiv').append(divHTML) to append the divs in the loop that are created to my nested structure on the page. I figured that this would cause the fade code to work as expected but I was wrong. It doesn't do anything at all. When check the source on the page, the div tags are not shown. They are however available in the DOM model when viewed through the IE developer toolbar. The issue (I think) looks to be that the initiation of the featureFade code is not working due to the div tags being unavailable. Is there a way to address this? The code used is shown below: <script type="text/javascript"> $(document).ready(function() { var soapEnv = "<soapenv:Envelope xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/'> \ <soapenv:Body> \ <GetListItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'> \ <listName>Carousel Items</listName> \ <viewFields> \ <ViewFields> \ <FieldRef Name='Title' /> \ </ViewFields> \ </viewFields> \ </GetListItems> \ </soapenv:Body> \ </soapenv:Envelope>"; $.ajax({ url: "_vti_bin/lists.asmx", type: "POST", dataType: "xml", data: soapEnv, complete: processResult, contentType: "text/xml; charset=\"utf-8\"" }); }); function processResult(xData, status) { $(xData.responseXML).find("z\\:row").each(function() { var divHTML = "<div id=\"divPanel_" + $(this).attr("ows_Title") + "\" class=\"panel\" style=\"background:url('http://devSP2010/sites/SPSOPS/Style Library/SharePointOps/Images/01.jpg') no-repeat; width:650px; height:55px;\"><div><div class=\"content\"><div><P><A style=\"COLOR: #cc0000\" href=\"www.google.com\">" + $(this).attr("ows_Title") + "</A></P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P></div></div></div></div>"; $("#beltDiv").append(divHTML); }); } featureFade.setup({ galleryid: 'headlines', beltclass: 'belt', panelclass: 'panel', autostep: { enable: true, moveby: 1, pause: 10000 }, panelbehavior: { speed: 1000, wraparound: true }, stepImgIDs: ["ftOne", "ftTwo", "ftThree", "ftFour","ftFive"], defaultButtons: { itemOn: "Style Library/SharePointOps/Images/dotOn.png", itemOff: "Style Library/SharePointOps/Images/dotOff.png" } }); The section where the div tags are dynamically appended is shown below. I've commented out the static div tags that work as expected. The only change is that these are implmented by the JQuery logic: <div class="homeFeature" style="display:inline-block"> <div id="headlines" class="headlines"> <div id="beltDiv" class="belt"> <!-- <div id="divPanel_ct01" class="panel" style="position:absolute;background-image:url('http://devsp2010/sites/spsops/Style Library/SharePointOps/Images/01.jpg'); background-repeat:no-repeat">Static Test 1</div> <div id="divPanel_ct02" class="panel" style="position:absolute;background-image:url('http://devsp2010/sites/spsops/Style Library/SharePointOps/Images/02.jpg'); background-repeat:no-repeat">Static Test 2</div> --> </div> </div> I'm stumped as to why it's not recognising the dynamically added elements in the DOM. Any help would be greatly appreciated on this. I'm happy to provide any further information on this. Thanks in advance, Grant Further to the answer recieved: I have modified the function call: function processResult(xData, status) { $(xData.responseXML).find("z\\:row").each( function() { /*alert($(this).attr("ows_ImagePath"));*/ var divHTML = "<div id=\"divPanel_" + $(this).attr("ows_Title") + "\" class=\"panel\" style=\"background:url('http://devSP2010/sites/SPSOPS/Style Library/SharePointOps/Images/ClydePort01big.jpg') no-repeat; width:650px; height:55px;\"><div><div class=\"content\"><div><P><A style=\"COLOR: #cc0000\" href=\"www.google.com\">" + $(this).attr("ows_Title") + "</A></P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P></div></div></div></div>"; $("#beltDiv").append(divHTML); } ); featureFade.setup( { galleryid: 'headlines', beltclass: 'belt', panelclass: 'panel', autostep: { enable: true, moveby: 1, pause: 10000 }, panelbehavior: { speed: 1000, wraparound: true }, stepImgIDs: ["ftOne", "ftTwo", "ftThree", "ftFour","ftFive"], defaultButtons: { itemOn: "Style Library/SharePointOps/Images/dotOn.png", itemOff: "Style Library/SharePointOps/Images/dotOff.png" } } ); }

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  • JQuery multiple-choice quiz script: how to ensure the correct answer is available?

    - by DavidR
    I have a function. I pass to it an object with a list of questions and answers. I generate a random number from a range equal to the number of questions in the object. The script check to see if that question has been asked, and if not, it asks it, the correct answer is then passed to a variable correct. I want to give 4 possible answers, each one randomly selected from the list of possible answers. I have this. I just want to know what is the best way to ensure that the correct answer is placed in the list. So far, this is what I have: it puts four answers into four targeted boxes. I want to ensure that the correct answer is in a randomly selected box. function getRandom(limit) { return Math.floor(Math.random() * limit ) } $("#answers > .answer").each(function(i){ r = getRandom(total_questions); $(this).text(answers[r]) });

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  • Python: Pickling highly-recursive objects without using `setrecursionlimit`

    - by cool-RR
    I've been getting RuntimeError: maximum recursion depth exceeded when trying to pickle a highly-recursive tree object. Much like this asker here. He solved his problem by setting the recursion limit higher with sys.setrecursionlimit. But I don't want to do that: I think that's more of a workaround than a solution. Because I want to be able to pickle my trees even if they have 10,000 nodes in them. (It currently fails at around 200.) (Also, every platform's true recursion limit is different, and I would really like to avoid opening this can of worms.) Is there any way to solve this at the fundamental level? If only the pickle module would pickle using a loop instead of recursion, I wouldn't have had this problem. Maybe someone has an idea how I can cause something like this to happen, without rewriting the pickle module? Any other idea how I can solve this problem will be appreciated.

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  • Cached Jquery selector behavior that I do not understand

    - by gaoshan88
    Given the following code why am I getting different values for a and b? I would have thought they would return the same thing: (function() { var a = $('#foo'); var Test = function(){ console.log(a); //outputs 'jQuery()' var b = $('#foo'); console.log(b); //outputs 'jQuery(select#foo)' which is what I want }; })(); This question stems from me trying to stick frequently used selectors into vars. Originally I was doing it in each method (like I did with var b in the above example) but then I found I needed to use the selectors in multiple methods so I moved the assignment out to be available (or so I thought) to all of the methods in that anonymous function. As you can see, it does not work. Why is this?

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  • Where to store frequently used functions in a OOP correct way

    - by Stefan Kuijers
    I'm working on a project which I want to build up OO. Now I came with a function that checks or a value is valid. private function valid(value:*, acceptedValues:Array):Boolean { for(var i:uint = 0; i < acceptedValues.length; i++) { if (value == acceptedValues[i]) { return true; } } return false; } As you can see, the function is very general and will be accessed across different classes. Now my question is; where do I store it in a OO correct way? Thanks in advance!

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  • PHP: xml_parse replaces entities and "?" character

    - by bhefny
    How can I describe something I can't quite put my finger on? I have a module for RSS reading "magpierss" it uses xml_parse() and after extensive troubleshooting all I can come up with is that it removes certain entities like "?" character. I haven't written this module myself but I have traced the code until the part uses xml_parse() and then the output is just replaced. And to my disappointment this behavior exists on our production server only and not the local server. I have compared both php.ini file to search for any differences but couldn't find anything. Could anyone please direct on where to search exactly, i don't even know which direction to start from. Thanks

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  • Binomial test in Python for very large numbers

    - by Morlock
    I need to do a binomial test in Python that allows calculation for 'n' numbers of the order of 10000. I have implemented a quick binomial_test function using scipy.misc.comb, however, it is pretty much limited around n = 1000, I guess because it reaches the biggest representable number while computing factorials or the combinatorial itself. Here is my function: from scipy.misc import comb def binomial_test(n, k): """Calculate binomial probability """ p = comb(n, k) * 0.5**k * 0.5**(n-k) return p How could I use a native python (or numpy, scipy...) function in order to calculate that binomial probability? If possible, I need scipy 0.7.2 compatible code. Many thanks!

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  • JavaScript's Associative Array / Object can't be read in functions

    - by Matrym
    At the very beginning of the javascript file, I have: var lbp = {}; lbp.defaults = { minLength: 40 }; I can successfully alert it afterwards, with: alert(lbp.defaults.minLength); But as soon as I put it inside a function, when I alert, I get "Undefined". What gives, and how do I avoid this? Is it absolutely necessary to pass this variable into each function, for example, by doing: function(lbp) { alert(lbp.defaults.minLength); } I would have thought that defining it first, it would attain global scope and not be required to be passed in? Thanks in advance for enlightening me :)

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  • how to copy char * into a string and vice-versa

    - by user295030
    If i pass a char * into a function. I want to then take that char * convert it to a std::string and once I get my result convert it back to char * from a std::string to show the result. I don't know how to do this for conversion ( I am not talking const char * but just char *) I am not sure how to manipulate the value of the pointer I send in. so steps i need to do take in a char * convert it into a string. take the result of that string and put it back in the form of a char * return the result such that the value should be available outside the function and not get destroyed. If possible can i see how it could be done via reference vs a pointer (whose address I pass in by value however I can still modify the value that pointer is pointing to. so even though the copy of the pointer address in the function gets destroyed i still see the changed value outside. thanks!

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  • check if username exists on form submit

    - by Developer
    This is my code. .js $(document).ready(function() { $("#username").focusout(function() { $.ajax({ type:'post', url:site_url()+'/client/checkUserName', data:{'username':$("#username").val()}, dataType:'json', success:function(result){ if(result != 'false'){ $('#message').text('Username exists'); } } }); }); .html <form id='form1' method="post"> <input type="text" name="username" id="username"/> <span id="message" style="color:red"></span> <input type="submit" value="submit" id="regis" class="btn"/> </form> Its working fine on focusout. How to make the form to not submit if username exists? Suppose there is a hidden field in the form say <input type="text" hidden id="type" value="<?php echo $type;?>"> Then if value exists in the hidden field then the username neednot be checked if already exists or not.

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