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  • When to use weak references in Python?

    - by bodacydo
    Can anyone explain usage of weak references? The documentation doesn't explain it precisely, it just says that the GC can destroy the object linked to via a weak reference at any time. Then what's the point of having an object that can disappear at any time? What if I need to use it right after it disappeared? Can you please explain them with some good examples? Thanks, Boda Cydo.

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  • MongoMapper, Rails, Increment Works in Console but not Controller

    - by Michael Waxman
    I'm using mongo_mapper 0.7.5 and rails 2.3.8, and I have an instance method that works in my console, but not in the controller of my actual app. I have no idea why this is. #controller if @friendship.save user1.add_friend(user2) ... #model ... key :friends_count, Integer, :default => 0 key :followers_count, Integer, :default => 0 def add_friend(user) ... self.increment(:friends_count => 1) user.increment(:followers_count => 1) true end And this works in the console, but in the controller it does not change the follower count, only the friends count. What gives? The only thing I can even think of is that the way that I'm passing the user in is the problem, but I'm not sure how to fix it.

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  • PowerShell - Shorten namespace names so it's easier to access types

    - by Adam Driscoll
    Is there a method of shortening PowerShell namespace references? Typing [RootNameSpace1.NameSpace2.Namepsace3+SomeEnum]::SomeValue is taxing and not a very good user expierence. I realize that you can reference System level objects without a namespace such that [Type]::GetType(... will work. Is there some manifest I could create or command I could use to shorten lengthy namespaces?

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  • ClickOnce Deployment of an Application with more then one executable file

    - by Ahron Levi
    Hi I am trying to deploy an application with two executable files one of which is the application it self. I used the publish tub on the VS 2008 and tried to publish manually using the MageUI.exe. in both cases I get the "Reference in the manifest does not match the identity of the downloaded assembly" error in regards to the second executable file. Dose Any one know how to publish an application with two executable files? Thanks, Ahron

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  • capybara selenium and JavaScript Destroy

    - by dorelal
    I am using rails 2.3.5 and this is what I did. I have latest cucumber, cucumber-rails and capybara installed. rails demo cd demo ruby script/generate cucumber --rspec --capybara ruby script/generate feature post title:string body:text published:boolean ruby script/generate scaffold post title:string body:text published:boolean rake db:migrate rake cucumber All the tests are passing. Now I want to test using Javascript. At this time this is how scenario looks like Scenario: Delete post Given the following posts: |title|body|published| |title 1|body 1|false| |title 2|body 2|true| |title 3|body 3|false| |title 4|body 4|true| When I delete the 3rd post Then I should see the following posts: |Title|Body|Published| |title 1|body 1|false| |title 2|body 2|true| |title 4|body 4|true| I added @javascript at the top. Now when I run rake cucumber then I see a confirmation page. But nothing happens until I click. What do I need to do so that OK is clicked automatically and test proceeds ahead.

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  • Remove JQuery validationEngine from form

    - by psynnott
    I am using Position Absolute's jQuery validationEngine but I need to remove it after attaching it to a form. I have 2 submit buttons on my form - one for save and one for save as draft. I attach the validationEngine to the form when Save is clicked. If the validation fails, and the user clicks Save as Draft (by passing the validation), the validation engine is still attached to the form from when they clicked "save". What I want to do is: - allow the user to attempt to save - validation fails and error is displayed - and allow them to click save as draft without any validation being performed I tried the unbind function and it appears to work, but it breaks the submit on the button completely. I just want to remove the validationEngine and allow everything else to work as it was. Thanks

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  • What kind parser that phpdoc use ?

    - by justjoe
    When the first time, i install phpdoc, i love it so much. And i want to create its mini version for myself use. So, can anybody give me information about what kind of parser it has. and Maybe a image reference on how it works (so i can picture it visually in my mind) ?

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  • subsonic in visual studio design host

    - by csizo
    Hi, I'm facing currently a problem regarding Subsonic configuration. What I want to achieve is using subsonic data access in a System.Web.UI.Design.ControlDesigner class. This class is hosted in Visual Studio Environment and enables design time operations on the attached System.Web.UI.WebControls.Control. The only problem is SubSonic seems always looking for SubSonicSection in the application configuration regardless passing connection string to it. The relevant code snippet: using (SharedDbConnectionScope dbScope = new SharedDbConnectionScope(new SqlDataProvider(), ConnectionString)) { Table1 _table1 = new Select().From<..().Where(...).IsEqualTo(...).ExecuteSingle<...>(); Throws exception on ExecuteSingle() method (configuration section was not found) while using (SharedDbConnectionScope dbScope = new SharedDbConnectionScope(ConnectionString)) { Throws exception on new SharedDbConnectionScope() (configuration section was not found) So the question is: Is there any way to pass the settings runtime to bypass the configuration section lookup as I don't want to add any subsonic specific configuration to devenv.configuration Thanks

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  • Zend_Table_Db and Zend_Paginator and Zend_Paginator_Adapter_DbSelect

    - by Uffo
    I have the following query: $this->select() ->where("`name` LIKE ?",'%'.mysql_escape_string($name).'%') Now I have the Zend_Paginator code: $paginator = new Zend_Paginator( // $d is an instance of Zend_Db_Select new Zend_Paginator_Adapter_DbSelect($d) ); $paginator->getAdapter()->setRowCount(200); $paginator->setItemCountPerPage(15) ->setPageRange(10) ->setCurrentPageNumber($pag); $this->view->data = $paginator; As you see I'm passing the data to the view using $this->view->data = $paginator Before I didn't had $paginator->getAdapter()->setRowCount(200);I could determinate If I have any data or not, what I mean with data, if the query has some results, so If the query has some results I show the to the user, if not, I need to show them a message(No results!) But in this moment I don't know how can I determinate this, since count($paginator) doesn't work anymore because of $paginator->getAdapter()->setRowCount(200);and I'm using this because it taks about 7 sec for Zend_Paginator to count the page numbers. So how can I find If my query has any results?

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  • How does Google Friend Connect accomplish cross domain communication without needing to upload a file to the client domain?

    - by mboyle
    Previously, Google's Friend Connect required users to upload a couple of files to their websites to enable cross domain communication and Facebook Connect still requires you to upload a single file to enabled it. Now, Friend Connect doesn't require any file upload... I was wondering how they were able to accomplish this. Reference: http://www.techcrunch.com/2009/10/02/easy-does-it-google-friend-connect-one-ups-facebook-connects-install-wizard/

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  • Access Error when running windows program

    - by JPJedi
    I have a windows form application that uses microsoft access for the database on the backend. When I run that application I get an error that says access is not installed on the computer. I thought that if I included the reference that it will be included with what I release so the user would not have to have access installed. How do I include the Access Runtime to be distributed/installed when my application is installed?

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  • Regex to Match White Space or End of String

    - by Kirk
    I'm trying to find every instance of @username in comment text and replace it with a link. Here's my PHP so far: $comment = preg_replace('/@(.+?)\s/', '<a href="/users/${1}/">@${1}</a> ', $comment); The only problem is the regex is dependent upon there being whitespace after the @username reference. Can anyone help me tweak this so it will also match if it is at the end of the string?

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  • jCarousel: Can you remove all items and rebind to a new collection?

    - by Jim G.
    jCarousel documentation states the following: By passing the callback function itemLoadCallback as configuration option, you are able to dynamically create (li) items for the content. {...} jCarousel contains a convenience method add() that can be passed the index of the item to create and the innerHTML string of the item to be created. My Question: Is it possible to remove all items and rebind to a new collection? BTW: I don't necessarily need a "convenience method" to do this. I'm very open to workarounds. FYI: This strategy doesn't seem to work.

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  • WPF/MVVM: How can I use several CollectionView`s for aggregated entities ?

    - by msfanboy
    Hello, I have a Customer with Orders and those have products. Everything aggregated with collections of type ObservableCollection. All 3 collections are bound to a datagrid/combobox. I can only make the root collection (ObservableCollection Customers{ get;set;} ) passing to a CollectionView so I can move the current customer within the combobox. But how can I move around the current Order in the datagrid? How to pass the selected Orders to another CollectionView ? Does all this maybe not work?

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  • Inserting the record into Database through JPA

    - by vinay123
    In my code I am using JSF - Front end , EJB-Middile Tier and JPA connect to DB.Calling the EJB using the Webservices.Using MySQL as DAtabase. I have created the Voter table in which I need to insert the record. I ma passing the values from the JSF to EJB, it is working.I have created JPA controller class (which automatcally generates the persistence code based on the data base classes) Ex: getting the entity manager etc., em = getEntityManager(); em.getTransaction().begin(); em.persist(voter); em.getTransaction().commit(); I have created the named query also: @NamedQuery(name = "Voter.insertRecord", query = "INSERT INTO Voter v values v.voterID = :voterID,v.password = :password,v.partSSN = :partSSN, v.address = :address, v.zipCode = :zipCode,v.ssn = :ssn, v.vFirstName = :vFirstName,v.vLastName = :vLastName,v.dob = :dob"), But still not able to insert the record? Can anyone help me in inserting the record into the Data base through JPA.(Persistence object)?

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  • Delphi 10, .NET, how do I convert a hex UTF-8 string to its unicode character?

    - by Evan V.
    Hi all, I am trying to make my web app compatible with international languages and I am stuck with trying to convert escaped characters in my Delphi .NET DLL. The front end code is passing the UTF-8 hex notation with an escape character e.g for ? I pass \uE3818A. In my DLL I capture this and constract the following string '$E3828A'. I need to convert this back to ? and send it to my database, I've been trying to use Encoding.UTF8.GetBytes and Encoding.UTF8.GetString but with no luck. Anyone could help me figure this out? Thank you.

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  • Password protected PDF using C#

    - by balaweblog
    I am creating a pdf document using C# code in my process. I need to protect the docuemnt with some standard password like "123456" or some account number. I need to do this without any reference dlls like pdf writer. I am generating the PDF file using SQL Reporting services reports. Is there are easiest way.

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  • LinkButton in a DataList

    - by erasmus
    I have a datalist and in its header template I have a linkbutton.In my codebehind file I wrote as I've always written: ((LinkButton)(DataList1.FindControl("LinkButton1"))).Enabled = false; but this gives me the error: Object reference not set to an instance of an object. How can I access this linkbutton?

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