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  • Getting the excluded elements for each of the combn(n,k) combinations

    - by gd047
    Suppose we have generated a matrix A where each column contains one of the combinations of n elements in groups of k. So, its dimensions will be k,choose(n,k). Such a matrix is produced giving the command combn(n,k). What I would like to get is another matrix B with dimensions (n-k),choose(n,k), where each column B[,j] will contain the excluded n-k elements of A[,j]. Here is an example of the way I use tho get table B. Do you think it is a safe method to use? Is there another way? n <- 5 ; k <- 3 (A <- combn(n,k)) (B <- combn(n,n-k)[,choose(n,k):1]) That previous question of mine is part of this problem. Thank you.

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  • Cannot change the target CPU to x86 Or x64 in Visual Studio 2005

    - by geekzilla
    I am trying to build a website application and specify the target CPU as x86 instead of Any CPU. The only choices I have in Configuration Manager under the "Active solution platform:" drop-down list are: "Any CPU", "Edit..", and "New...". In the "Project Contexts" portion of the "Configuration Manager" window, it lists 3 columns: "Project", "Configuration" and "Platform". Under the "Platform" column, my only choice is ".Net". when the "Active solution configuration" is set to, "Debug". When the, ""Active solution configuration" is set to "Release", then I can choose either, ".Net" or "Any CPU" under the "Platform" column. I am using Visual Studio 2005 Professional Edition. This website was previously built using Visual Studio .NET and was recently upgraded using the Visual Studio 2005 Professional Edition Upgrade Wizard. I need to target x86 specifically because the are components used in the project that are only x86 compatible.

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  • Mysql SELECT nested query, very complicated?

    - by smartbear
    Okay, first following are my tables: Table house: id | items_id | 1 | 1,5,10,20 | Table items: id | room_name | refer 1 | kitchen | 3 5 | room1 | 10 Table kitchen: id | detail_name | refer 3 | spoon | 4 5 | fork | 10 Table spoon: id | name | color | price | quantity_available | 4 | spoon_a | white | 50 | 100 | 5 | spoon_b | black | 30 | 200 | How to do a nested select statement, where I want to select id, name, color, price and quantity_available column, from the each value inside the 'items_id' column in 'house' table? This is very challenging!! EDIT: after read robin's answer Table house: id | items_id | house1 | 1 | house1 | 5 | house1 | 10 | house2 | 20 | If this it the house table, how to do the nested, join, or whatever select statement??

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  • Filtering by category in Magento 1.4

    - by Sam
    Hi All I have a custom module I made to show featured products on the homepage. I set it up to show products that are in a ‘featured’ category. It works fine in 1.3, but now in 1.4 I get the following error: SQLSTATE[42S22]: Column not found: 1054 Unknown column ‘e.category_ids’ in ‘where clause’ Here’s my code: $_productCollection = Mage::getResourceModel('reports/product_collection') ->addAttributeToSelect('*') ->addAttributeToFilter('visibility', $visibility) ->addAttributeToFilter('category_ids',array('finset'=>$featuredcategory)) $_productCollection->load(); The featured category is specified from the admin. Anyone any ideas what might be up?

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  • Apache Cassandra overwhelming bandwidth overhead

    - by tanyehzheng
    while testing Apache Cassandra, I inserted 1000 rows of data. I allow it to propagate to the other machine on LAN. This is a 2 machine cluster. I monitor the network connection between the two machine. The total data I expected to flow between the two servers should be around 25Mb including all column names, column values and timestamps). But the actual data sent and received between them was an whopping 362Mb!! Anybody knows why is there such an overwhelming overhead? Thank you

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  • Help with jQuery 'zoom' script

    - by Sam
    Hi All I'm using this script on my site - http://www.suuronen.org/esa-matti/projects/panfullsize/ Got it all working fine, only problem is that it always defaults to the zoomed image when you load a page. I'd rather it showed the scaled down image first, and then zoomed when requested. Anyone know how I can fix it? Cheers Sam

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  • Add columns to SqlWebEventProvider

    - by Julien N
    In an asp.net application, we'd like to use the SqlWebEventProvider to log any Event that occurs during the application lifetime. The problem is that we think that the table aspnet_WebEvent_Event doesn't provide enough columns and should log more information (we need to keep the Logged user). I'm aware that this information could be stored in the "Details" column but it wouldn't then be really simple to filter the results and build reports. So I'm searching for a simple solution to add a column. I wish I could derive SqlWebEventProvider but the methods used to build the stocked procedure parameters are private (PrepareParams() and FillParams()). Any simple solution that doesn't imply to rewrite the entire Provider class ?

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  • jquery checkbox help

    - by sea_1987
    The Problem I am trying to run some ajax on one my pages for my website, basically I have three checkboxes all of which on pageload are unselected, when a checkbox is clicked I need to be able load in via ajax the relevant HTML. This system is currently a PHP script that depending on what the POST is set returns a different view, so I think all I need to is send the POST via AJAX, but I need to do everytime a new checkbox is checked. My HTML looks like this, div class="segment"> <div class="label"> <label>Choose region: </label> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio checked" value="Y" name="area[Nationwide]" id="inp_Nationwide"> </div> <div class="label "> <label for="inp_Nationwide">Nationwide</label> </div> <div class="s">&nbsp;</div> </div> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio checked" value="Y" name="area[Lancashire]" id="inp_Lancashire"> </div> <div class="label "> <label for="inp_Lancashire">Lancashire</label> </div> <div class="s">&nbsp;</div> </div> </div> <div class="column w190"> <div class="segment"> <div class="input"> <input type="checkbox" checked="checked" class="radio" value="Y" name="area[West_Yorkshire]" id="inp_West_Yorkshire"> </div> <div class="label "> <label for="inp_West_Yorkshire">West Yorkshire</label> </div> <div class="s">&nbsp;</div> </div> <div class="s">&nbsp;</div> </div> </div> My current attempt was to ascertain whether the input has been clicked so I have done this with my javascript, though this is probably wrong, $('input.radio').click(function(){ if($(this).hasClass('clicked')) { $(this).removeClass('clicked'); } else { $(this).addClass('clicked'); } });

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  • Localization of Settings.bundle defaultvalues

    - by notnoop
    How can I have a localized default values in the Settings bundle? I encounter this problem for regionally sensitive defaults. Consider an option in the settings bundle to indicate whether to show distances in miles or kilometers. The default settings for en_US and en_GB is 'miles, and km for everywhere else. Does the SDK provide a settings for that? Or should I just add a third option: 'Infer metric system, miles, kms'

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  • How to do an IF statement based on the value of a MySQL table cell?

    - by Susan
    How can I do an if statement based on the value of a mysql table cell. For example, I have a table of people with a column called marital_status. This column has one of two values: yes or no. But this doesn't work: $query = mysql_query("SELECT marital_status FROM people WHERE first_name = 'John'"); while ($row = mysql_fetch_assoc($query)) { $maritalStatus = $row['marital_status']; } if ($maritalStatus == "yes") { echo "This person is married."; } else { echo "This person is NOT married."; } $maritalStatus == "yes" doesn't return as true even though that is exactly the value in that cell.

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  • How to change datagrid cell's itemRenderer dynamically

    - by Shubham Goyal
    i have a simple datagrid having 2 columns named as image and place. where image column has mx.controls.Image itemRenderer and place is simple. my requirement is to change itemRenderer of image cell when it will be clicked. i means to say when user click on any image from image column than i want to show that image path in editable mode and when user edit that path then the selected cell will start displayed the updated image. i dont know how to do this and getting depressed . please anyone help me ! :(

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  • ado.net managing connections

    - by madlan
    Hi, I'm populating a listview with a list of databases on a selected SQL instance, then retrieving a value from each database (It's internal product version, column doesn't always exist) I'm calling the below function to populate the second column of the listview: item.SubItems.Add(DBVersionCheck(serverName, database.Name)) Function DBVersionCheck(ByVal SelectedInstance As String, ByVal SelectedDatabase As String) Dim m_Connection As New SqlConnection("Server=" + SelectedInstance + ";User Id=sa;Password=password;Database=" + SelectedDatabase) Dim db_command As New SqlCommand("select Setting from SystemSettings where [Setting] = 'version'", m_Connection) Try m_Connection.Open() Return db_command.ExecuteScalar().trim m_Connection.Dispose() Catch ex As Exception 'MessageBox.Show(ex.Message) Return "NA" Finally m_Connection.Dispose() End Try End Function This works fine except it's creating a connection to each database and leaving it open. My understanding is the close()\dispose() releases only the connection from the pool in ado rather than the actual connection to sql. How would I close the actual connections after I've retrieved the value? Leaving these open will create hundreds of connections to databases that will probably not be used for that session.

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  • Can't use attached property on combobox inside hierarchical datatemplate WPF

    - by jesse_t_r
    I'm hoping to use an attached property to assign a command to the selection changed event of a combobox that is embedded inside a treeview. I'm attempting to set the attached property inside the hierchical data template for the tree but the command is not set and does not fire when the item in the combobox is changed. I've found that setting the attached property directly on a combobox outside of a datatemplate works fine; here is how I'm trying to set the property in the template: <HierarchicalDataTemplate x:Key="template1" ItemsSource="{Binding Path=ChildColumns}"> <Border Background="{StaticResource TreeItem_Background}" BorderBrush="Blue" BorderThickness="2" CornerRadius="5" Margin="2,5,5,2" HorizontalAlignment="Left" > <Grid> <Grid.ColumnDefinitions > <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> <ColumnDefinition Width="*"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition /> <RowDefinition /> </Grid.RowDefinitions> <TextBlock MinWidth="80" HorizontalAlignment="Left" Grid.Column="0" Margin="5,2,2,2" Grid.Row ="0" Text="{Binding Path=ColName}"/> <ComboBox Name="cboColType" Grid.Column="1" HorizontalAlignment="Right" ItemsSource="{Binding Source={StaticResource dataFromEnum}}" SelectedItem="{Binding Path=ColumnType}" Margin="2,2,2,2" local:ItemSelectedBehavior.ItemSelected="{Binding Path=LoadConfigCommand}" /> </Grid> </Border> </HierarchicalDataTemplate> I also tried creating a style <Style x:Key="childItemStyle" TargetType="{x:Type FrameworkElement}"> <Setter Property="local:ItemSelectedBehavior.ItemSelected" Value="{Binding Path=LoadConfigCommand}" /> </Style> and setting the itemcontainerstyle to the style in the hierarchical datatemplate..still no luck .. <HierarchicalDataTemplate> ... <ComboBox Name="cboColType" Grid.Column="1" HorizontalAlignment="Right" ItemsSource="{Binding Source={StaticResource dataFromEnum}}" SelectedItem="{Binding Path=ColumnType}" Margin="2,2,2,2" ItemContainerStyle={StaticeResource childItemStyle}" /> ... </HierarchicalDataTemplate> I'm still learning a lot about WPF so I'm assuming there is something particular about the hierchical datatemplate that is not allowing the attache dproperty to be set..I have found similar posts in the forums and tried to implement their solutions as above, but after a day of searching and experimenting wiht no luck I'm hoping some one has an idea about this...

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  • What is the relationship between WebProxy & IWebProxy with respect to WebClient?

    - by Streamline
    I am creating an app (.NET 2.0) that uses WebClient to connect (downloaddata, etc) to/from a http web service. I am adding a form now to handle allowing proxy information to either be stored or set to use the defaults. I am a little confused about some things. First, some of the methods & properties available in either WebProxy or IWebProxy are not in both. What is the difference here with respect to setting up how WebClient will be have when it is called? Secondly, do I have to tell WebClient to use the proxy information if I set it using either WebProxy or IWebProxy class elsewhere? Or is it automatically inherited? Thirdly, when giving the option for the user to use the default proxy (whatever is set in IE) and using the default credentials (I assume also whatever is set in IE) are these two mutually exclusive? Or you only use default credentials when you have also used default proxy? This gets me to the whole difference between WebProxy and IWebProxy. WebRequest.DefaultProxy is a IWebPRoxy class but UseDefaultCredentials is not a method on the IWebProxy class, rather it is only on WebProxy and in turn, How to set the proxy to the WebRequest.DefautlProxy if they are two different classes? Here is my current method to read the stored form settings by the user - but I am not sure if this is correct, not enough, overkill, or just wrong because of the mix of WebProxy and IWebProxy: private WebProxy _proxyInfo = new WebProxy(); private WebProxy SetProxyInfo() { if (UseProxy) { if (UseIEProxy) { // is doing this enough to set this as default for WebClient? IWebProxy iProxy = WebRequest.DefaultWebProxy; if (UseIEProxyCredentials) { _proxyInfo.UseDefaultCredentials = true; } else { // is doing this enough to set this as default credentials for WebClient? WebRequest.DefaultWebProxy.Credentials = new NetworkCredential(ProxyUsername, ProxyPassword); } } else { // is doing this enough to set this as default for WebClient? WebRequest.DefaultWebProxy = new WebProxy(ProxyAddress, ParseLib.StringToInt(ProxyPort)); if (UseIEProxyCredentials) { _proxyInfo.UseDefaultCredentials = true; } else { WebRequest.DefaultWebProxy.Credentials = new NetworkCredential(ProxyUsername, ProxyPassword); } } } // Do I need to WebClient to absorb this returned proxy info if I didn't set or use defaults? return _proxyInfo; } Is there any reason to not just scrap storing app specific proxy information and only allow the app the ability to use the default proxy information & credentials for the logged in user? Will this ever not be enough if using HTTP? Part 2 Question: How can I test that the WebClient instance is using the proxy information or not?

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  • Getting consecutive version numbers from Hibernate's @Version usage once per transaction

    - by Cheradenine
    We use Hibernate with the following version definition for optimistic locking et. al: <version name="version" access="field" column="VERSION" type="long" unsaved-value="negative"/> This is fine and dandy; however, there is one small problem, which is that the first version for some entities is '0', and for others, it is '1'. Why this is happening, is that for some object graphs, an entity will be subject to both onSave and flushDirty - this is reasonable, such as if two object are circular dependencies. However, the version number gets incremented on both occasions, leading to the above '0' / '1' discrepancy. I'd really like the version number only to ever increment once per transaction. However, I can't see a simple way to do this in the hibernate versioning implementation, without hacking about with an Interceptor (which was how I generated a column value for version before, but I wanted hibernate to do it itself)..

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  • qtableview (libqt) how do I correctly create a QModelIndex

    - by Chris Camacho
    I'm trying to enter edit mode on a specific cell like this void MainWindow::on_addButton_released(void) { tm->addRow(); tableView->scrollToBottom(); int ec=tm->firstWritableColumn(); int r=tm->rowCount(QModelIndex()); QModelIndex id = tm->index(r, ec, QModelIndex()); tableView->setCurrentIndex(id); tableView->edit(id); qDebug() << "row:" << r << " col:" << ec << "index:" << id; } my model creates an index like this QModelIndex TableModel::index(int row,int column,QModelIndex parent) const { Q_UNUSED(parent); return createIndex(row,column,0); } the debug output looks like this row: 9 col: 1 index: QModelIndex(9,1,0x0,TableModel(0xbf3f50) ) I'm fairly sure that the index is somehow invalid as setCurrentIndex doesn't seem to be working

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  • How to use MySql date_add in Nhibernate?

    - by jalchr
    This really puzzled for hours, I searched all over the internet, but got no working solution. Can someone point where the problem is ... thanks ! I created my own dialect class public class MySQLDialectExtended : MySQLDialect { public MySQLDialectExtended() { RegisterFunction("date_add_interval", new SQLFunctionTemplate(NHibernateUtil.Date, "date_add(?1, INTERVAL ?2 ?3)")); } } Then I try to use it as follows: query.Append( " ( date_add_interval(D.ApprovalDate, 1, YEAR) < current_timestamp() < date_add_interval(D.RenewalDate, -1, YEAR) )"); It fails with following exception: NHibernate.Hql.Ast.ANTLR.QuerySyntaxException : Exception of type 'Antlr.Runtime.NoViableAltException' was thrown. near line 1, column 677 where the column number is at the end of the first 'YEAR' word. Edit: here is my configuration <property name="dialect">MyCompanyName.MySQLDialectExtended, MyCompanyName</property> <property name="hbm2ddl.keywords">none</property>

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  • Entity framework error: The conversion of a datetime2 data type to a datetime data

    - by EdenMachine
    I know there are a ton of posts about this issue but none of them seem to solve my problem. Here's the scenario: I have a CreateDate DateTime column in my MS SQL Server database User table that is non-nullable and is automatically set using GetDate() method in "Default Value or Binding" setting. I am able to create a User just fine with the standard EF Insert but when I try to update the user, I get this error: The conversion of a datetime2 data type to a datetime data type resulted in an out-of-range value. What is the trick to not having the EF worry about the CreateDate column for updates? I have the StoreGenerationPattern = Identity but that isn't helping. Here are the EF properties for my Entity Property: http://screencast.com/t/8ndQRn9N And here is my Update method: http://screencast.com/t/UXIzhkhR

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  • BigDecimal precision not persisted with javax.persistence annotations

    - by dkaczynski
    I am using the javax.persistence API and Hibernate to create annotations and persist entities and their attributes in an Oracle 11g Express database. I have the following attribute in an entity: @Column(precision = 12, scale = 9) private BigDecimal weightedScore; The goal is to persist a decimal value with a maximum of 12 digits and a maximum of 9 of those digits to the right of the decimal place. After calculating the weightedScore, the result is 0.1234, but once I commit the entity with the Oracle database, the value displays as 0.12. I can see this by either by using an EntityManager object to query the entry or by viewing it directly in the Oracle Application Express (Apex) interface in a web browser. How should I annotate my BigDecimal attribute so that the precision is persisted correctly? Note: We use an in-memory HSQL database to run our unit tests, and it does not experience the issue with the lack of precision, with or without the @Column annotation.

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  • Facebook comments widget

    - by Fabian Glace
    Hi, i'm using some of facebook widgets. I have "Fan Box" and "Share". They work just fine. I'm trying to use the Comment Box and the problem is it does not show up at all on my site. http://www.facebook.com/facebook-widgets/ This is the facebook page with the widgets. "Website or Business" column widgets work fine when i use them. "Developers" column widgets don't work at all. I have a developer account all setup. This is the widget code. FB.init("e83799c22a5c43da5142a958595dc531"); Does anyone know if i'm missing something.

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  • Reading option values in select

    - by user281180
    I have select values as follows: <select id="SelectBox" multiple="multiple"> <% foreach (var item in Model.Name) { %> <option value="<%= item.Value %>"><%=item.Text%></option> <% } %> </select> I have a function in jquery that will have to read both the text and value. I need to have the values in array so that I can display them in a table with a column Id and another column text. My problem is that Im not able to retrieve each and every value separately. Im having the text in one line, test1test2test3. function read() { $("#SelectBox").each(function() { var value = $(this).val(); var text = $(this).text(); alert(value);alert(text); }); }

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  • Separate php.ini file for each Apache virtual host?

    - by Calvin L
    Is it possible to have a separate php.ini file that overrides the default php.ini file for each virtual host? I'm running Apache/2.2.14, PHP 5.3.2-1. For example I have several vhosts pointing to domains in my /var/www/ directory: /var/www/website1.com /var/www/website2.com What I'd like is to be able to place a custom php.ini file in each directory that would override the default values only for that vhost, but keep the original defaults if the value isn't specified: /var/www/website1.com/htdocs/ /var/www/website1.com/php.ini

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  • ALTER TABLE without locking the table?

    - by Daniel
    When doing an ALTER TABLE statement in MySQL, the whole table is read-locked for the duration of the statement. If it's a big table, that means insert or update statements could be locked for a looooong time. Is there a way to do a "hot alter", like adding a column in such a way that the table is still updatable throughout the process? Mostly I'm interested in a solution for MySQL but I'd be interested in other RDBMS if MySQL can't do it. To clarify, my purpose is simply to avoid downtime when a new feature that requires an extra table column is pushed to production. Any database schema will change over time, that's just a fact of life. I don't see why we should accept that these changes must inevitably result in downtime; that's just weak.

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