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  • why unsigned int 0xFFFFFFFF is equal to int -1?

    - by conejoroy
    perhaps it's a very stupid question but I'm having a hard time figuring this out =) in C or C++ it is said that the maximum number a size_t (an unsigned int data type) can hold is the same as casting -1 to that data type. for example see http://stackoverflow.com/questions/1420982/invalid-value-for-sizet Why?? I'm confused.. I mean, (talking about 32 bit ints) AFAIK the most significant bit holds the sign in a signed data type (that is, bit 0x80000000 to form a negative number). then, 1 is 0x00000001.. 0x7FFFFFFFF is the greatest positive number a int data type can hold. then, AFAIK the binary representation of -1 int should be 0x80000001 (perhaps I'm wrong). why/how this binary value is converted to anything completely different (0xFFFFFFFF) when casting ints to unsigned?? or.. how is it possible to form a binary -1 out of 0xFFFFFFFF? I have no doubt that in C: ((unsigned int)-1) == 0xFFFFFFFF or ((int)0xFFFFFFFF) == -1 is equally true than 1 + 1 == 2, I'm just wondering why. thanks!

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  • adding a js method

    - by Sorin Buturugeanu
    Hi! I have a js function that is named getID which is basically return document.getElementById(id) I want to make another function, getTag that would return getElementsByTagName. The part that I can't seem to manage is that I want to be able to call them like this: getID('myid').getTag('input') = so this would return all the input elements inside the element with the id myid Thanks! ps: getTag would also have to work if it's called by it's own, but then it would just return document.getElementsByTagName

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  • Change C# sorting behaviour

    - by Erik
    Lets say i have the strings abc_ and abc2_. Now, normally when sorting i C# abc2_ would come after abc_, leaving the result: abc_ abc2_ I am using this to sort, if it matters: var element = from c in elements orderby c.elementName ascending select c; How can i change this? I want abc_ to come last. Reversing is not an option because the list is contains more than two elements.

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  • References between Spring beans when using a NameSpaceHandler

    - by teabot
    I'm trying to use a Spring context namespace to build some existing configuration objects in an application. I have defined a context and pretty much have if working satisfactorily - however, I'd like one bean defined by my namespace to implicitly reference another: Consider the class named 'Node': public Class Node { private String aField; private Node nextNode; public Node(String aField, Node nextNode) { ... } Now in my Spring context I have something like so: <myns:container> <myns:node aField="nodeOne"/> <myns:node aField="nodeTwo"/> </myns:container> Now I'd like nodeOne.getNode() == nodeTwo to be true. So that nodeOne.getNode() and nodeTwo refer to the same bean instance. These are pretty much the relevant parts I have in my AbstractBeanDefinitionParser: public AbstractBeanDefinition parseInternal(Element element, ParserContext parserContext) { ... BeanDefinitionBuilder containerFactory = BeanDefinitionBuilder.rootBeanDefinition(ContainerFactoryBean.class); List<BeanDefinition> containerNodes = Lists.newArrayList(); String previousNodeBeanName; // iterate backwards over the 'node' elements for (int i = nodeElements.size() - 1; i >= 0; --i) { BeanDefinitionBuilder node = BeanDefinitionBuilder.rootBeanDefinition(Node.class); node.setScope(BeanDefinition.SCOPE_SINGLETON); String nodeField = nodeElements.getAttribute("aField"); node.addConstructorArgValue(nodeField); if (previousNodeBeanName != null) { node.addConstructorArgValue(new RuntimeBeanReference(previousNodeBeanName)); } else { node.addConstructorArgValue(null); } BeanDefinition nodeDefinition = node.getBeanDefinition(); previousNodeBeanName = "inner-node-" + nodeField; parserContext.getRegistry().registerBeanDefinition(previousNodeBeanName, nodeDefinition); containerNodes.add(node); } containerFactory.addPropertyValue("nodes", containerNodes); } When the application context is created my Node instances are created and recognized as singletons. Furthermore, the nextNode property is populated with a Node instance with the previous nodes configuration - however, it isn't the same instance. If I output a log message in Node's constructor I see two instances created for each node bean definition. I can think of a few workarounds myself but I'm keen to use the existing model. So can anyone tell me how I can pass these runtime bean references so that I get the correct singleton behaviour for my Node instances?

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  • how to Update JTable

    - by bob3333
    Good evening I have a JTable that I built with a TableModel how to update the elements of the table, because when I do table = new JTable (new TableProg (elementTab)) I create another table above the original table and it is very ugly So for example how to update element of table in a loop at each iteration as "elementTab" changes? thank you very much

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  • PayPal return URL

    - by Sam
    Here's the code for my Paypal button: <form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="post"> <input type="hidden" name="cmd" value="_xclick"> <input type="hidden" name="business" value="[email protected]"> <input type="hidden" name="lc" value="GB"> <input type="hidden" name="button_subtype" value="products"> <input type="hidden" name="no_note" value="1"> <input type="hidden" name="no_shipping" value="1"> <input type="hidden" name="rm" value="0"> <input type="hidden" name="return" value="http://www.example.com"> <input type="hidden" name="item_name" value="My Item"> <input type="hidden" name="amount" value="25.00"> <input type="hidden" name="currency_code" value="GBP"> <input type="hidden" name="bn" value="PP-BuyNowBF:proceed_btn.gif:NonHosted"> <input type="hidden" name="item_number" value="4BD9569402CDE"> <input type="image" src="http://www.example.com/image.gif" border="0" name="submit" alt="PayPal - The safer, easier way to pay online."> <img alt="" border="0" src="https://www.paypal.com/en_GB/i/scr/pixel.gif" width="1" height="1"> </form> Is it possible to add the item_number to the return URL? For example, after completing the payment within PayPal the user gets sent back to http://www.example.com?item_number=4BD9569402CDE

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  • Conflict between two Javascripts (MailChimp validation etc. scripts & jQuery hSlides.js)

    - by Brian
    I have two scripts running on the same page, one is the jQuery.hSlides.js script http://www.jesuscarrera.info/demos/hslides/ and the other is a custom script that is used for MailChimp list signup integration. The hSlides panel can be seen in effect here: http://theatricalbellydance.com. I've turned off the MailChimp script because it was conflicting with the hSlides script, causing it not to to fail completely (as seen here http://theatricalbellydance.com/home2/). Can someone tell me what could be done to the hSlides script to stop the conflict with the MailChimp script? The MailChimp Script var fnames = new Array(); var ftypes = new Array(); fnames[0] = 'EMAIL'; ftypes[0] = 'email'; fnames[3] = 'MMERGE3'; ftypes[3] = 'text'; fnames[1] = 'FNAME'; ftypes[1] = 'text'; fnames[2] = 'LNAME'; ftypes[2] = 'text'; fnames[4] = 'MMERGE4'; ftypes[4] = 'address'; fnames[6] = 'MMERGE6'; ftypes[6] = 'number'; fnames[9] = 'MMERGE9'; ftypes[9] = 'text'; fnames[5] = 'MMERGE5'; ftypes[5] = 'text'; fnames[7] = 'MMERGE7'; ftypes[7] = 'text'; fnames[8] = 'MMERGE8'; ftypes[8] = 'text'; fnames[10] = 'MMERGE10'; ftypes[10] = 'text'; fnames[11] = 'MMERGE11'; ftypes[11] = 'text'; fnames[12] = 'MMERGE12'; ftypes[12] = 'text'; var err_style = ''; try { err_style = mc_custom_error_style; } catch (e) { err_style = 'margin: 1em 0 0 0; padding: 1em 0.5em 0.5em 0.5em; background: rgb(255, 238, 238) none repeat scroll 0% 0%; font-weight: bold; float: left; z-index: 1; width: 80%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; color: rgb(255, 0, 0);'; } var mce_jQuery = jQuery.noConflict(); mce_jQuery(document).ready(function ($) { var options = { errorClass: 'mce_inline_error', errorElement: 'div', errorStyle: err_style, onkeyup: function () {}, onfocusout: function () {}, onblur: function () {} }; var mce_validator = mce_jQuery("#mc-embedded-subscribe-form").validate(options); options = { url: 'http://theatricalbellydance.us1.list-manage.com/subscribe/post-json?u=1d127e7630ced825cb1a8b5a9&id=9f12d2a6bb&c=?', type: 'GET', dataType: 'json', contentType: "application/json; charset=utf-8", beforeSubmit: function () { mce_jQuery('#mce_tmp_error_msg').remove(); mce_jQuery('.datefield', '#mc_embed_signup').each(function () { var txt = 'filled'; var fields = new Array(); var i = 0; mce_jQuery(':text', this).each(function () { fields[i] = this; i++; }); mce_jQuery(':hidden', this).each(function () { if (fields[0].value == 'MM' && fields[1].value == 'DD' && fields[2].value == 'YYYY') { this.value = ''; } else if (fields[0].value == '' && fields[1].value == '' && fields[2].value == '') { this.value = ''; } else { this.value = fields[0].value + '/' + fields[1].value + '/' + fields[2].value; } }); }); return mce_validator.form(); }, success: mce_success_cb }; mce_jQuery('#mc-embedded-subscribe-form').ajaxForm(options); }); function mce_success_cb(resp) { mce_jQuery('#mce-success-response').hide(); mce_jQuery('#mce-error-response').hide(); if (resp.result == "success") { mce_jQuery('#mce-' + resp.result + '-response').show(); mce_jQuery('#mce-' + resp.result + '-response').html(resp.msg); mce_jQuery('#mc-embedded-subscribe-form').each(function () { this.reset(); }); } else { var index = -1; var msg; try { var parts = resp.msg.split(' - ', 2); if (parts[1] == undefined) { msg = resp.msg; } else { i = parseInt(parts[0]); if (i.toString() == parts[0]) { index = parts[0]; msg = parts[1]; } else { index = -1; msg = resp.msg; } } } catch (e) { index = -1; msg = resp.msg; } try { if (index == -1) { mce_jQuery('#mce-' + resp.result + '-response').show(); mce_jQuery('#mce-' + resp.result + '-response').html(msg); } else { err_id = 'mce_tmp_error_msg'; html = '<div id="' + err_id + '" style="' + err_style + '"> ' + msg + '</div>'; var input_id = '#mc_embed_signup'; var f = mce_jQuery(input_id); if (ftypes[index] == 'address') { input_id = '#mce-' + fnames[index] + '-addr1'; f = mce_jQuery(input_id).parent().parent().get(0); } else if (ftypes[index] == 'date') { input_id = '#mce-' + fnames[index] + '-month'; f = mce_jQuery(input_id).parent().parent().get(0); } else { input_id = '#mce-' + fnames[index]; f = mce_jQuery().parent(input_id).get(0); } if (f) { mce_jQuery(f).append(html); mce_jQuery(input_id).focus(); } else { mce_jQuery('#mce-' + resp.result + '-response').show(); mce_jQuery('#mce-' + resp.result + '-response').html(msg); } } } catch (e) { mce_jQuery('#mce-' + resp.result + '-response').show(); mce_jQuery('#mce-' + resp.result + '-response').html(msg); } } } The hslides script: /* * hSlides (1.0) // 2008.02.25 // <http://plugins.jquery.com/project/hslides> * * REQUIRES jQuery 1.2.3+ <http://jquery.com/> * * Copyright (c) 2008 TrafficBroker <http://www.trafficbroker.co.uk> * Licensed under GPL and MIT licenses * * hSlides is an horizontal accordion navigation, sliding the panels around to reveal one of interest. * * Sample Configuration: * // this is the minimum configuration needed * $('#accordion').hSlides({ * totalWidth: 730, * totalHeight: 140, * minPanelWidth: 87, * maxPanelWidth: 425 * }); * * Config Options: * // Required configuration * totalWidth: Total width of the accordion // default: 0 * totalHeight: Total height of the accordion // default: 0 * minPanelWidth: Minimum width of the panel (closed) // default: 0 * maxPanelWidth: Maximum width of the panel (opened) // default: 0 * // Optional configuration * midPanelWidth: Middle width of the panel (centered) // default: 0 * speed: Speed for the animation // default: 500 * easing: Easing effect for the animation. Other than 'swing' or 'linear' must be provided by plugin // default: 'swing' * sensitivity: Sensitivity threshold (must be 1 or higher) // default: 3 * interval: Milliseconds for onMouseOver polling interval // default: 100 * timeout: Milliseconds delay before onMouseOut // default: 300 * eventHandler: Event to open panels: click or hover. For the hover option requires hoverIntent plugin <http://cherne.net/brian/resources/jquery.hoverIntent.html> // default: 'click' * panelSelector: HTML element storing the panels // default: 'li' * activeClass: CSS class for the active panel // default: none * panelPositioning: Accordion panelPositioning: top -> first panel on the bottom and next on the top, other value -> first panel on the top and next to the bottom // default: 'top' * // Callback funtctions. Inside them, we can refer the panel with $(this). * onEnter: Funtion raised when the panel is activated. // default: none * onLeave: Funtion raised when the panel is deactivated. // default: none * * We can override the defaults with: * $.fn.hSlides.defaults.easing = 'easeOutCubic'; * * @param settings An object with configuration options * @author Jesus Carrera <[email protected]> */ (function($) { $.fn.hSlides = function(settings) { // override default configuration settings = $.extend({}, $.fn.hSlides.defaults, settings); // for each accordion return this.each(function(){ var wrapper = this; var panelLeft = 0; var panels = $(settings.panelSelector, wrapper); var panelPositioning = 1; if (settings.panelPositioning != 'top'){ panelLeft = ($(settings.panelSelector, wrapper).length - 1) * settings.minPanelWidth; panels = $(settings.panelSelector, wrapper).reverse(); panelPositioning = -1; } // necessary styles for the wrapper $(this).css('position', 'relative').css('overflow', 'hidden').css('width', settings.totalWidth).css('height', settings.totalHeight); // set the initial position of the panels var zIndex = 0; panels.each(function(){ // necessary styles for the panels $(this).css('position', 'absolute').css('left', panelLeft).css('zIndex', zIndex).css('height', settings.totalHeight).css('width', settings.maxPanelWidth); zIndex ++; // if this panel is the activated by default, set it as active and move the next (to show this one) if ($(this).hasClass(settings.activeClass)){ $.data($(this)[0], 'active', true); if (settings.panelPositioning != 'top'){ panelLeft = ($(settings.panelSelector, wrapper).index(this) + 1) * settings.minPanelWidth - settings.maxPanelWidth; }else{ panelLeft = panelLeft + settings.maxPanelWidth; } }else{ // check if we are centering and some panel is active // this is why we can't add/remove the active class in the callbacks: positioning the panels if we have one active if (settings.midPanelWidth && $(settings.panelSelector, wrapper).hasClass(settings.activeClass) == false){ panelLeft = panelLeft + settings.midPanelWidth * panelPositioning; }else{ panelLeft = panelLeft + settings.minPanelWidth * panelPositioning; } } }); // iterates through the panels setting the active and changing the position var movePanels = function(){ // index of the new active panel var activeIndex = $(settings.panelSelector, wrapper).index(this); // iterate all panels panels.each(function(){ // deactivate if is the active if ( $.data($(this)[0], 'active') == true ){ $.data($(this)[0], 'active', false); $(this).removeClass(settings.activeClass).each(settings.onLeave); } // set position of current panel var currentIndex = $(settings.panelSelector, wrapper).index(this); panelLeft = settings.minPanelWidth * currentIndex; // if the panel is next to the active, we need to add the opened width if ( (currentIndex * panelPositioning) > (activeIndex * panelPositioning)){ panelLeft = panelLeft + (settings.maxPanelWidth - settings.minPanelWidth) * panelPositioning; } // animate $(this).animate({left: panelLeft}, settings.speed, settings.easing); }); // activate the new active panel $.data($(this)[0], 'active', true); $(this).addClass(settings.activeClass).each(settings.onEnter); }; // center the panels if configured var centerPanels = function(){ var panelLeft = 0; if (settings.panelPositioning != 'top'){ panelLeft = ($(settings.panelSelector, wrapper).length - 1) * settings.minPanelWidth; } panels.each(function(){ $(this).removeClass(settings.activeClass).animate({left: panelLeft}, settings.speed, settings.easing); if ($.data($(this)[0], 'active') == true){ $.data($(this)[0], 'active', false); $(this).each(settings.onLeave); } panelLeft = panelLeft + settings.midPanelWidth * panelPositioning ; }); }; // event handling if(settings.eventHandler == 'click'){ $(settings.panelSelector, wrapper).click(movePanels); }else{ var configHoverPanel = { sensitivity: settings.sensitivity, interval: settings.interval, over: movePanels, timeout: settings.timeout, out: function() {} } var configHoverWrapper = { sensitivity: settings.sensitivity, interval: settings.interval, over: function() {}, timeout: settings.timeout, out: centerPanels } $(settings.panelSelector, wrapper).hoverIntent(configHoverPanel); if (settings.midPanelWidth != 0){ $(wrapper).hoverIntent(configHoverWrapper); } } }); }; // invert the order of the jQuery elements $.fn.reverse = function(){ return this.pushStack(this.get().reverse(), arguments); }; // default settings $.fn.hSlides.defaults = { totalWidth: 0, totalHeight: 0, minPanelWidth: 0, maxPanelWidth: 0, midPanelWidth: 0, speed: 500, easing: 'swing', sensitivity: 3, interval: 100, timeout: 300, eventHandler: 'click', panelSelector: 'li', activeClass: false, panelPositioning: 'top', onEnter: function() {}, onLeave: function() {} }; })(jQuery);

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  • algorithm || method to write prog

    - by fatai
    I am one of the computer science student. My wonder is everyone solve problem with different or same method, but actually I dont know whether they use method or I dont know whether there are such common method to approach problem. All teacher give us problem which in simple form sometimes, but they dont introduce any approach or method(s) so that we can first choose method then apply that one to problem , afterward find solution then write code. I have found one method when I failed the course, More accurately, When I counter problem in language , I will get more paper and then ; first, input/ output step ; my prog will take this / these there argument(s) and return namely X , ex : in c, input length is not known and at same type , so I must use pointer desired output is in form of package , so use structure second, execution part ; in that step , I am writing all step which are goes to final output ex : in python ; 1.) [ + , [- , 4 , [ * , 1 , 2 ]], 5] 2.) [ + , [- , 4 , 2 ],5 ] 3.) [ + , 2 , 5] 4.) 7 ==> return 7 third, I will write test code ex : in c++ input : append 3 4 5 6 vector_x remove 0 1 desired output vector_x holds : 5 6 But now, I wonder other method ; used to construct class :::: for c++ , python, java used to communicate classes / computers used for solving embedded system problem ::::: for c Why I wonder , because I learn if you dont costruct algorithm on paper, you may achieve your goal. Like no money no lunch , I can say no algorithm no prog therefore , feel free when you write your own method , a way which is introduced by someone else but you are using and you find it is so efficient

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  • Vector addition of lists

    - by ntimes
    If I had a N lists each of length M, how could I write a nice clean function to return a single list of length M, where each element is the sum of the corresponding elements in the N lists? (starting to learn lisp - go easy!)

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  • jQuery background image transition

    - by Hock
    I have a div that has a 'home.jpg' image as background and I want the background to be 'another_image.jpg' when I click something. The thing is that I want the new background to fadeIn and not just to appear (by doing some .css('background', url('another_image.jpg')); ) Is there a way to do that? I've tried the bgImageTransition plugin but it just adds another element on top of the div I had... Thanks,

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  • Refresh iFrame (Cache Issue)

    - by Ramiz Uddin
    We are getting a weird issue on which we are not sure what exactly cause it. Let me elaborate the issue. Suppose, we have two different html pages a.html and b.html. And a little script written in index.html: <html> <head> <script> function reloadFrame(iframe, src) { iframe.src = src; } </script> </head> <body> <form> <iframe id="myFrame"></iframe> <input type="button" value="Load a.html" onclick="reloadFrame(document.getElementById('myFrame'), 'a.html')"> <input type="button" value="Load b.html" onclick="reloadFrame(document.getElementById('myFrame'), 'b.html')"> </form> </body> </html> A server component is continuously updating both files a.html and b.html. The problem is the content of both files are successfully updating on the server side. If we open we can see the updated changes but client getting the older content which doesn't show the updated changes. Any idea?

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  • Visual Studio Macro To Switch Solution Configuration

    - by Eddie Parker
    I'm trying to write a macro that toggles between release/debug solution configurations in Visual Studio. It appears I can switch the configuration by using 'DTE.ExecuteCommand("Build.SolutionConfigurations", "Debug")'. Is there a way I can 'read' the value? Or is there a way I can use macros to 'focus' on the solution configuration UI element?

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  • Add row to GridView after header row

    - by Jan-Frederik Carl
    I have a GridView with a header and some rows and want to add another row just below the header using jQuery. <form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" ShowHeader="true" runat="server"> <Columns> <asp:TemplateField HeaderText="Activity Name"> <ItemTemplate> <asp:Label runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Name") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> <asp:Button Text="Add Activity" runat="server" OnClientClick="addActivity(); return false;" /> </div> </form> My tries were $('#GridView1 tbody').prepend('<tr><td>new activity</td></tr>'); Puts a new row above the header $('#GridView1 table tr:first').after('<tr><td>new activity</td></tr>'); Does nothing (at least nothing visible, as well with any other tr element)

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  • How to open AsyncTask from a Thread

    - by Abhishek
    In my application I have created a SplashScreen that will b shown for 5 Seconds and after that it executes an if else case depending upon the values stored in the Preference file. If Preference file contains values then the AsyncTask code will run else the Login form will load. When i try to run my application. The thread is going to the Login form with the help of intent but when it comes to AsyncTask my application shows a force close error message. This is my SplashScreen code: public class SplashScreen extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.splashscreen); Thread timer = new Thread() { public void run() { try { sleep(5000); } catch(InterruptedException e) { e.printStackTrace(); } finally { if(GoGolfPref.getEmail(SplashScreen.this)!=null && GoGolfPref.getPass(SplashScreen.this)!=null) { new LoadingScreen(SplashScreen.this, SplashScreen.this).execute("login_page", Login.url+GoGolfPref.getEmail(SplashScreen.this)+"/"+GoGolfPref.getPass(SplashScreen.this)); } else { Intent in = new Intent(SplashScreen.this, Login.class); startActivity(in); finish(); } } } }; timer.start(); } } This is the error I am getting: 08-29 07:25:58.040: E/AndroidRuntime(2365): FATAL EXCEPTION: Thread-10 08-29 07:25:58.040: E/AndroidRuntime(2365): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() 08-29 07:25:58.040: E/AndroidRuntime(2365): at android.os.Handler.<init>(Handler.java:121) 08-29 07:25:58.040: E/AndroidRuntime(2365): at android.app.Dialog.<init>(Dialog.java:101) 08-29 07:25:58.040: E/AndroidRuntime(2365): at android.app.AlertDialog.<init>(AlertDialog.java:63) 08-29 07:25:58.040: E/AndroidRuntime(2365): at android.app.ProgressDialog.<init>(ProgressDialog.java:80) 08-29 07:25:58.040: E/AndroidRuntime(2365): at android.app.ProgressDialog.<init>(ProgressDialog.java:76) 08-29 07:25:58.040: E/AndroidRuntime(2365): at com.pnf.gogolf.LoadingScreen.<init>(LoadingScreen.java:130) 08-29 07:25:58.040: E/AndroidRuntime(2365): at com.pnf.gogolf.SplashScreen$1.run(SplashScreen.java:32) How to get this working? Thanks in advance...

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  • Nokogiri parsing Rackspace return using XPath in Rails

    - by Schroedinger
    Hey guys, I'm using Nokogiri to parse a return from the Rackspace API so I'm using their sample code to response = server.get '/customers/'[email protected]_id.to_s+'/domains/', server.xml_format doc = Nokogiri::XML::parse response.body puts "xpath values" doc.xpath("//name").each do |node| puts node.text end As my code to use Nokogiri to return the nodelist of nodes of the element for some reason I seem to have missed something obvious and I just for the life of me cannot get it to parse the list of nodes and return them to me, is there something simple I can do to fix to have it return the list of nodes? Cheers

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  • Django: Overriding the save() method: how do I call the delete() method of a child class

    - by Patti
    The setup = I have this class, Transcript: class Transcript(models.Model): body = models.TextField('Body') doPagination = models.BooleanField('Paginate') numPages = models.PositiveIntegerField('Number of Pages') and this class, TranscriptPages(models.Model): class TranscriptPages(models.Model): transcript = models.ForeignKey(Transcript) order = models.PositiveIntegerField('Order') content = models.TextField('Page Content', null=True, blank=True) The Admin behavior I’m trying to create is to let a user populate Transcript.body with the entire contents of a long document and, if they set Transcript.doPagination = True and save the Transcript admin, I will automatically split the body into n Transcript pages. In the admin, TranscriptPages is a StackedInline of the Transcript Admin. To do this I’m overridding Transcript’s save method: def save(self): if self.doPagination: #do stuff super(Transcript, self).save() else: super(Transcript, self).save() The problem = When Transcript.doPagination is True, I want to manually delete all of the TranscriptPages that reference this Transcript so I can then create them again from scratch. So, I thought this would work: #do stuff TranscriptPages.objects.filter(transcript__id=self.id).delete() super(Transcript, self).save() but when I try I get this error: Exception Type: ValidationError Exception Value: [u'Select a valid choice. That choice is not one of the available choices.'] ... and this is the last thing in the stack trace before the exception is raised: .../django/forms/models.py in save_existing_objects pk_value = form.fields[pk_name].clean(raw_pk_value) Other attempts to fix: t = self.transcriptpages_set.all().delete() (where self = Transcript from the save() method) looping over t (above) and deleting each item individually making a post_save signal on TranscriptPages that calls the delete method Any ideas? How does the Admin do it? UPDATE: Every once in a while as I'm playing around with the code I can get a different error (below), but then it just goes away and I can't replicate it again... until the next random time. Exception Type: MultiValueDictKeyError Exception Value: "Key 'transcriptpages_set-0-id' not found in " Exception Location: .../django/utils/datastructures.py in getitem, line 203 and the last lines from the trace: .../django/forms/models.py in _construct_form form = super(BaseInlineFormSet, self)._construct_form(i, **kwargs) .../django/utils/datastructures.py in getitem pk = self.data[pk_key]

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  • Python - Blackjack

    - by user335932
    def showCards(): #SUM sum = playerCards[0] + playerCards[1] #Print cards print "Player's Hand: " + str(playerCards) + " : " + "sum print "Dealer's Hand: " + str(compCards[0]) + " : " + "sum" compCards = [Deal(),Deal()] playerCards = [Deal(),Deal()] How can i add up the interger element of a list containing to values? under #SUM error is can combine lists like ints...

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  • why i dont get the check nvalue in check box?

    - by udaya
    Hi I have a check box when check that check box the id corresponding to the check box is placed on a text box ... but when there is only single value in the database i cant get the check value why? here is my code <? if(isset($AcceptFriend)) {?> <form action="<?=site_url()?>friends/Accept_Friend" name="orderform" id="orderform" method="post" style="background:#CCCC99"> <input type="text" name="chId" id="chId" > <table border="0" height="50%" id="chkbox" width="50%" > <tr> <? foreach($AcceptFriend as $row) {?> <tr> <td>Name</td><td><?=$row['dFrindName'].'</br>';?></td> <td> <input type="checkbox" name="checkId" id="checkId" value="<? echo $row['dMemberId']; ?>" onClick="get_check_value()" ></td> </tr> <? }}?> </tr> <tr> <td width="10px"><input type="submit" name="submit" id="submit" class="buttn" value="AcceptFriend"></td></tr> </table> </form> This is the script i am using function get_check_value() { var c_value = ""; for (var i=0; i < document.orderform.checkId.length; i++) { if (document.orderform.checkId[i].checked) { c_value = c_value + document.orderform.checkId[i].value + "\n"; } } alert(c_value); document.getElementById('chId').value= c_value; }

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  • Change event on <select>

    - by adivasile
    If i attach a change event listener on a<select> how do i acces the option that was selected (not just the value, the actual element). $('select').addEvent('change',function(event) { //?? }); Note: i'm using Mootools

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  • radio buttons and cookie settings

    - by Cola
    I don't know nothing about cookies and how to set them and i need some advice. I have this 2 radio buttons. For example if an option is changed from one to another, that option will remain even if the page is refreshed or changed on other pages where this radio buttons exist , and i need to make the cookie setting for this code. Can someone can give me an advice what code should i add to my php? thanks This is js code: $(document).ready(function() { $('radio[name=radio]').each(function() { $(this).click(function() { my_function(); }); }); }); my_function() { var value_checked = $("input[name='radio']:checked").val(); $.ajax({ type: 'POST', url: 'page.php', data: {'value_checked':value_checked}, }); } html code <form> <div id="radio"> <input type="radio" id="radio1" name="radio" checked="checked" /><label for="radio1">Choice 1</label> <input type="radio" id="radio2" name="radio" /><label for="radio2">Choice 2</label> </div> </form>

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  • Dropdown in PHP

    - by VP
    Hi, I am using PHP 5.2 on SUN OS server. Having problems with the following piece of code that for a drop down: echo '<form action="" method="get">'; echo '<p>Information:<br />'; echo '<select name="acctno" style="width: 100px;">'; foreach ($this->account_names as $acctno => $acctname) { echo '<option value="'.$acctno.'">'.$acctname.'</option>'; } echo '</select> <input type="submit" value="view" />'; echo '</form>'; Worked perfectly fine on Firefox and Chrome; however there is a problem with Internet Explorer. In IE the dropdown width is limited to the size i.e 100px. So only the first 15-16 characters of the account name are displayed all the time. However in chrome or firefox, even if only 15-16 characters are displayed initially, when the drop down arrow is clicked upon, it show the entire name (however long it may be). This does not happen with IE. So if the account name is, lets say, "1223456789abcdefghijkl" then: For IE: shows only "123456789" all the time Ffor chrome or firefox: shows "123456789" and when it is dropped down it show the full name as "123456789abcdefghijkl". Any help here would be much appreciated. Thanks, VP

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  • Perl, array referencing

    - by Mike
    Consider this Perl code my @a=[[1]]; print $a[0][0] . "\n"; **output** ARRAY(0x229e8) Why does it print an Array instead of 1? I would have expected @a to create an array of size 1 with a reference to a second array containing only one element, 1

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