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• Python. Strange class attributes behavior

  - by Eugene

  >>> class Abcd: ... a = '' ... menu = ['a', 'b', 'c'] ... >>> a = Abcd() >>> b = Abcd() >>> a.a = 'a' >>> b.a = 'b' >>> a.a 'a' >>> b.a 'b' It's all correct and each object has own 'a', but... >>> a.menu.pop() 'c' >>> a.menu ['a', 'b'] >>> b.menu ['a', 'b'] How could this happen? And how to use list as class attribute?

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• ParentViewController returns nil

  - by Andreas Johannessen

  Hi I know there are many questions on this, but I don't get it to work. I present a UITabBarController with the presentModalViewController. However when I try to get title from the navigationItem title attribute in the UINavigationController class that presents the tabcontroller, it returns nil no matter what I do. I have the NSLog in the viewDidLoad method in tabcontroller class. I also cast the UIViewController which is returned by the self.parentViewController property. Then I try to access the title through: NSLog(@"%@", castedViewController.navigationItem.title); Any suggestions?

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• Change all instances of object to iframe for IE using Jquery

  - by geckomist

  I was wondering if it would be possible to use jquery to change all object tags on a site automatically to iframe for IE 8 and below. I would like this so that it can be xhtml 1.1 valid and not have to be double coded all the time and you would not have to focus on non-standard browsers. The data attribute would have to be changed to src, I would like frameborder="0" to be inserted, and all styles set to the object tag also set to the iframe tag. I don't want this to turn into a debate on iframes vs objects, I just thing this would be a huge time saver and would encourage proper strict xhtml coding. Thanks for any input!

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• How can I make an aggregated property support ActiveRecord::Dirty semantics?

  - by Eric

  I have an aggregated attribute which I want to be able ask about its _changed? ness, etc. composed_of :range, :class_name => 'Range', :mapping => [ %w(range_begin begin), %w(range_end end)], :allow_nil => true If I use the aggregation: foo.range = 1..10 This is what I get: foo.range # => 1..10 foo.range_changed? # NoMethodError foo.range_was # ditto foo.changed # ['range_begin', 'range_end'] So basically, I'm not getting ActiveRecord::Dirty semanitcs on aggregated attributes. Is there any way to do that? I'm not having a lot of luck with alias_attribute_with_dirty, etc.

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• Iterate attributes and IBOutlets of a UIViewController

  - by Espuz

  I've a generic UIViewController on my app. All the UIViewController on the app inherits from this generic one. I'm trying to automate the deallocation and releasing of attributes and IBOutlets as properties. I'm doing the first (attributes) on dealloc method and the second (IBOutlets as properties) on viewDidUnload. - (void) dealloc { [_att1 release]; _att1 = nil; [_att2 release]; _att2 = nil; // ... } - (void) viewDidUnload { self.att1 = nil; // att1 is an IBOutlet self.att2 = nil; // att2 is an IBOutlet // ... } Is there any way to iterate all my attributes and IBOutlets to simplify this operations? I want to avoid do it for each outlet and attribute and delegate it to the generic UIViewController. Thanks.

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• How to deserialize an html div when it has certain attributes to it?

  - by user1676874

  For example this: <div class="link_text"> <a href="http://www.stackoverflow.com"> <strong>Text</strong></a> </div> With normal tags like XML ones it is easy, you just create the class with the same name as the tag, so if the tag is: <something></something> you create a class called something, but how would you do this in HTML in an example div such as that one, with a class attribute inside?

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• Removing title from wp_list_cats()

  - by Alex

  I'm trying to remove/replace the title attribute on the category elements used by WordPress. I'm using WordPress 2.9.1, with the following code: <div id="categories"> <h3>Manufacturers</h3> <ul> <?php str_replace("title=\"View all posts filed under ","",wp_list_categories('use_desc_for_title=0&exclude=1,2,3,4,5&title_li=&hierarchical=1')); ?> </ul> </div> From what I had read this method used to work on older versions (I had never tried it though). I really don't want to hack at the interals of WordPress, or have to use a JavaScript hack, for something so straight forward. Any help is appreciated... Update below is what is created from the code above... Manufacturers Featured

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• xmlserializer throwing InvalidOperationException

  - by AndyC

  I have an XmlSerializer object, and I have added 2 event handlers to the UnknownElement and UnknownAttribute events, as below: XmlSerializer xs = new XmlSerialiser(typeof(MyClass)); xs.UnknownAttribute += new XmlAttributeEventHandler(xs_UnknownAttribute); xs.UnknownElement += new XmlElementEventHandler(xs_UnknownAttribute); Each of these event handlers basically do the same thing, they print out the node name or the attribute name causing the issue. But for some reason, an InvalidOperationException is getting thrown saying there is an error in the xml document with . I thought these errors would be caught by my events?

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• How can I use a carriage return in a HTML tooltip ?

  - by ip

  Hi, I'm currently adding verbose tooltips to our site, and I'd like (without having to resort to a whizz-bang jQuery plugin, I klnow there are many!) to use carriage returns to format the tooltip. To add the tip I'm using the 'title' attribute. I've looked around the usual sites and using the basic template of: <a title='Tool?Tip?On?New?Line' >link with tip</a> I've tried replacing the '?' with: <br /> &013; / &#13; \r\n Environment.NewLine (I'm using C#) Neither work. Is it possible ?? WOW! Thanks all - 6 different answers in less than an hour. Thanks indeed!!

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• DI: Injecting ActionFilterAttribute implementation (ASP.NET MVC)

  - by Sosh

  I was wondering if it is possible to inject a particular ActionFilterAttribute implementation using a IoC container. For example, imagine you create a TransactionAttribute class [Transaction] You use this to decorate action which should be wrapped in a transaction in the persistence layer. But implementation details of the attribute will be tied to the persistence tech you are using, but strictly speaking, your controller should not know about this, and you might want to swap this out. What I would like to do, is define some kind of TransactionAttribute interface, and then have my IoC inject the correct implantation. So on my actions I only need specify: [Transaction] public ActionResult SomeAction() { .... } ...and the IoC will inject the correct implementation depending on config (eg. something like NHibernateTransactionAttribute, or SomeOtherORMTransactionAttribute). Is this possible? Has anyone done it?

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• Grails: can remoteField update multiple fields?

  - by Michael Bavin

  Hi, Assume i have a book entity with an isbn field. When entered a isbn number, i want 2 fields to be updated: title and author. My controller looks like this: def ajaxGetBook = { def book = Book.findByIsbn(params.isbn) if(book==null) book = new Book() render book as JSON } So my call works, and i get a full JSON Book. Now i would like to update 2 texfields by the update attribute <g:remoteField action="ajaxGetBook" update="title" name="isbn" value="${bookInstance?.book?.isbn}" paramName="isbn"/> Now the title field gets updated with the full book object, so that doesn't work. Is it possible to update field title with only the JSON book.title? Is it possible to update more fields at once? I could render book.title as JSON but that works for only one field. Thank you

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• ASP.NET MVC DataAnnotations different tables. Can it be done?

  - by mazhar kaunain baig

  i have a language table which is as a foreign key in the link table , The link can be in 3 languages meaning there will be 3 rows in the link table every time i enter the record . i am using jQuery tabs to enter the records in 3 languages . OK so that thing is that there will be three text boxes for every field in the table.link name field will have 3 text boxes, description will have 3 text boxes and so on. i am using LINK to SQL with VS2010. i will be creating link class with MetadataType so how will i handle for eg link name attribute 3 times

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• How to write a value validation method for core data?

  - by mystify

  The docs say: you should implement methods of the form validate:error:, as defined by the NSKeyValueCoding protocol so lets say I have an attribute which is an int: friendAge I want to make sure that any friend may not be younger than 30. So how would I make that validation method? -validateFriendAge:error: What am I gonna do in there, exactly? And what shall I do with that NSError I get passed? I think it has an dictionary where I can return a humanly readable string in an arbitrary language (i.e. the one that's used currently), so I can output a reasonable error like: "Friend is not old enough"... how to do that?

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• WF - Creating a selective list

  - by Michael Bendtsen

  I have a stupid question. I have created a workflow Designer host where I publish my own activities. I also have a property grid which only displays the properties decorated with a special attribute. This designer is going to be used by none IT staff. What I want is that on an activity the user can select a property value from a list. I know I just could create an Enum but I would like it to be dynamic. I.e. all events on a specific interface (extracted using reflection). Is this at all possible or am I stuck with enums?

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• Is it possible to build this type of program in PHP?

  - by Steven

  I want to build a QA program that will crawl all the pages of a site (all files under a specified domain name), and it will return all external links on the site that doesn't open in a new window (does not have the target="_blank" attribute in the href). I can make a php or javascript to open external links in new windows or to report all problem links that don't open in new windows of a single page (the same page the script is in) but what I want is for the QA tool to go and search all pages of a website and report back to me what it finds. This "spidering" is what I have no idea how to do, and am not sure if it's even possible to do with a language like PHP. If it's possible how can I go about it?

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• Radio buttons + array elements

  - by Mark

  I have a form that can be dynamically duplicated (with JS) so that the user can enter as much data as he wants. This works great for text inputs, because I just leave the name attribute the same (ending with a []) and then when the values are posted, it just returns me an array. Now I just realized that this doesn't work so well for radio buttons, because the names actually need to be unique for each set. But from the data standpoint, each set only returns one value, so retrieving the data from the POST data wouldn't be a problem, it just screws up the functionality of my form. There's no way around this, is there? I'm just screwed and I can't use arrays?

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• Javascript Code For HTML5 Form Validation Not Working

  - by MistUnleashed

  I'm new to JavaScript so I have no idea why this code does not work and validate my HTML5 Form like it should. The JavaScript code which can be found below is supposed to check if the browser supports the required attribute and if it doesn't then it will validate the form and check for any empty spaces. I got the code from this website. In the body of the webpage containing my form I have this: Below is the contactvalidate.js file: $('#formTemplate').submit(function() { if (!attributeSupported("required") || ($.browser.safari)) { $("#formTemplate [required]").each(function(index) { if (!$(this).val()) { alert("Please fill all required fields."); return false; } }); } return false; }); Do I need to change anything in this code or should it work? As I've said I'm new to JavaScript so any help you guys could give me is greatly appreciated.

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• Nokogiri extract data from xml

  - by Awea

  Hi guys, i try to extract data from a xml in rails application with the Nokogiri gem, the xml : <item> <description> <img src="something" title="anothething"> <p>text, bla bla...</p> </description> </item> Actually i do something like this to extract data from the xml : def test_content @return = Array.new site = 'http://www.les-encens.com/modules/feeder/rss.php?id_category=0' @doc = Nokogiri::XML(open(site, "UserAgent" => "Ruby-OpenURI")) @doc.xpath("//item").each do |n| @return << [ n.xpath('description') ] end end Could you show me how extract just the src attribute from the img tag ?

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• why does calling methods on a div fire the live click event

  - by oo

  i have this jquery code: $(this).parent('.copyFoodInstance').attr("myset", "0"); $(this).parent('.copyFoodInstance').html("<img BORDER=0 src='../../images/copy1.png' />"); it seems that when i call this code, this event fires: $(document).ready(function() { $('div.copyFoodInstance').live('click', function() { does anyone know why this event fires from the lines above? is there anyway to stop if from firing? All i am doing is updating an attribute on the div and updating the html. this shouldn't fire a click event?

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• Adding behaviour to a set of classes

  - by devoured elysium

  I have defined an Event class: Event and all the following classes inherit from Event: SportEventType1 SportEventType2 SportEventType3 SportEventType4 Right now I will only have SportEvents but I don't know if in the future I'll want some other kind of events that doesn't even have anything to do with Sports. Later, I will want to draw some graphics with info taken from Events, and the drawing logic can be a bit complex. But, for the moment, I think I shouldn't think of how the drawing will be done and I believe that maybe it'd be better if that drawing part was not put as an integral part of the Event/SportEventX class chain. I am looking for solutions for this problem. I know I could just make Event have an instance variable(attribute, for the java crowds) pointing to something as an IDrawInterface, but that would make the Event class "assume" it will be later used for drawing. I would like to make the Event class oblivious to this if possible. Thanks!

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• Entity Framework: a proxy collection for displaying a subset of data

  - by Jefim

  Imagine I have an entity called Product and a repository for it: public class Product { public int Id { get; set; } public bool IsHidden { get; set; } } public class ProductRepository { public ObservableCollection<Product> AllProducts { get; set; } public ObservableCollection<Product> HiddenProducts { get; set; } } All products contains every single Product in the database, while HiddenProducts must only contain those, whose IsHidden == true. I wrote the type as ObservableCollection<Product>, but it does not have to be that. The goal is to have HiddenProducts collection be like a proxy to AllProducts with filtering capabilities and for it to refresh every time when IsHidden attribute of a Product is changed. Is there a normal way to do this? Or maybe my logic is wrong and this could be done is a better way?

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• RSpec View testing: How to modify params?

  - by sebastiangeiger

  I am trying to test my views with RSpec. The particular view that is causing me troubles changes its appearance depending on a url parameter: link_to "sort>name", model_path(:sort_by => 'name') which results in http://mydomain/model?sort_by=name My view then uses this parameter like that: <% if params[:sort_by] == 'name' %> <div>Sorted by Name</div> <% end %> The RSpec looks like this: it "should tell the user the attribute for sorting order" do #Problem: assign params[:sort_for] = 'name' render "/groups/index.html.erb" response.should have_tag("div", "Sorted by Name") end I would like to test my view (without controller) in RSpec but I can't get this parameter into my params variable. I tried assign in all different flavours: assign[:params] = {:sort_by => 'name'} assign[:params][:sort_by] = 'name' ... no success so far. Every idea is appreciated.

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• Domino 9 / Dojo 1.8 - Date Time Picker without default value

  - by Julian Buss

  I want a Date Time Picker control WITHOUT a default value. Doesn't seem to be possible anymore :-( To reproduce, create a blank XPage and place a Date Time Picker control. Open the XPage in the browser and you will see that it defaults to today. I didn't found any way to set the default to an empty value. I tried setting all properties/data/default to 0, null, empty string and so on - no luck. I tried the data-dojo-probs attribute with value:'', this sets the default to 1970-1-1, but not to blank. Any ideas?

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• PrintingPermissionLevel, SafePrinting, and restrictions

  - by Steve Cooper

  There is a PrintingPermission attribute in the framework which takes a PrintingPermissionLevel enumeration with one of these values; NoPrinting: Prevents access to printers. NoPrinting is a subset of SafePrinting. SafePrinting: Provides printing only from a restricted dialog box. SafePrinting is a subset of DefaultPrinting. DefaultPrinting: Provides printing programmatically to the default printer, along with safe printing through semirestricted dialog box. DefaultPrinting is a subset of AllPrinting. AllPrinting: Provides full access to all printers. The documentation is really sparse, and I wondered if anyone can tell me more about the SafePrinting option. What does the documentation mean when it says "Provides printing only from a restricted dialog box." I have no idea what this means. Can anyone shed any light? This subject is touched in the MS certification 70-505: TS: Microsoft .NET Framework 3.5, Windows Forms Application Development and so I'm keen to find out more.

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• Modern way to validate POST-data in MVC 2

  - by zerkms

  There are a lot of articles devoted to working with data in MVC, and nothing about MVC 2. So my question is: what is the proper way to handle POST-query and validate it. Assume we have 2 actions. Both of them operates over the same entity, but each action has it's own separated set of object properties that should be bound in automatic manner. For example: Action "A" should bind only "Name" property of object, taken from POST-request Action "B" should bind only "Date" property of object, taken from POST-request As far as I understand - we cannot use Bind attribute in this case. So - what are the best practices in MVC2 to handle POST-data and probably validate it.

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