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• Howto write a class where a property can be accessed without naming it.

  - by SchlaWiener

  I have a (dump) question regarding VB/C# I often use third party classes where I can access a child object with only specifying the id or key. Example: Instead of writing: DataRow row = GetAPopulatedDataRowSomeWhere(); Object result = row.Items[1]; // DataRow has no Items property Object result = row.Items["colName"]; // Also not possible I use this code to access the members: DataRow row = GetAPopulatedDataRowSomeWhere(); Object result = row[1]; Object result = row["colName"]; Can someone tell me how a class has to look like to support this syntax? My own class has a Dictionary that I want to access this way. MyClass["key"]; // <- that's what I want MyClass.SubItems["key"]; // <- that's how I use it now

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• Hiding ListViewItem based on a filter

  - by fonix232

  I want to hide some items based on a text filter in a ListView (WinForms). Basically the listview loads the items from a text file, and I don't want it to be read and/or written when the user searches the list. The search is done in a combobox's KeyDown event, but there is no "Visible" property of the ListViewItem. Is there any easy way to do this, WITHOUT re-reading the file? (as it is an XML file, and it could even contain thousands of items, it would be hard to search efficiently and even let the user use the application, as the search would take for minutes (mostly with the loading)).

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• Set both Text and Value property of ComboBox in design time

  - by The King

  I need to add the following items to a combo box. Value DisplayText Mpost Posted Call Calling RScan Re-Scan These items are fairly static, and is not retrieved from any database... Hence thought of assigning these in design time itself. I'm Unable to use Items property as it asks only one value per item... Could you please help. Ps : In case you are suggesting BindingSource, could you please give me an example. I was not able to find one.

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• What is the best way to make a schedule in MFC

  - by Vanwaril

  I have a list of items that are each associated with a start and end time and date. What I want to do is, given a time and date range, display only the items that fall within that window, even partially. What I'm doing is creating a CListCtrl with all the items in it and the CListCtrl is sorted by start time by default. But given a time range, I don't know how to search for the first item that is within the range. Another problem with the list control is it displays as a list, whereas it would be nice if there was a control that could also show things that are concurrent side by side. I'm doing this within a dialog application.

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• hasErrors with indexed property

  - by Micor

  I am having hard time getting hasErrors to work with indexed properties. For example class Order { String prop1 String prop2 static hasMany = [items: Item] } class Item { String name static constraints = { name(blank:false) } } Validation works properly and on item.name being blank I do get an error with <g:renderErrors bean="${orderInstance}"/> However, I am trying to have input box highlighted using hasErrors : <g:each in="${orderIntsance.items}" status="i" var="item"> <span class="field ${hasErrors(bean: orderInstance, field: ????????? , 'errors')}"> <g:textField name="items[${i}].name" value="${item?.name}"/> </span> </g:each> Not sure how to get to it with a field: property, any ideas? Thanks

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• nHibernate query by example with multiple associated objects

  - by BurnWithLife

  I'm trying to use nhibernate's query by example to build dynamic queries. I'm stuck on how to code for an example object with multiple associations. Here's an example from NHibernate in Action. Its a User object with Items. Example exampleUser = Example.Create(u).IgnoreCase().EnableLike(MatchMode.Anywhere); Example exampleItem = Example.Create(i).IgnoreCase().EnableLike(MatchMode.Anywhere); return GetSession().CreateCriteria(typeof(User)) .Add( exampleUser ) .CreateCriteria("Items") .Add( exampleItem ) .List<User>(); If the User object has let's say a Category object as a property, how could I add that in to the above example? If i put another CreateCriteria at the end it refers to the Items, not the User.

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• Checking for reciprocal relationships in mysql. A trivial one table problem.

  - by calumbrodie

  I have a mysql table that stores relationships. Items can be related to another item in one direction, or both items can be related to each other. I want to return all items related to my primary item - but I also want to check to see if the related item has a 'reverse relationship' to the current item and show this as a boolean |--------------|---------------| | SKU | related_SKU | |--------------|---------------| | 0001 | 0099 | | 0002 | 0099 | | 0099 | 0001 | |--------------|---------------| If I want to get all relationships for SKU=0001 SELECT related_SKU from relationships where SKU='0001' returns |--------------| | related_SKU | |--------------| | 0099 | |--------------| but what I want is |--------------|---------------| | related_SKU | reciprocal | |--------------|---------------| | 0099 | 1 | |--------------|---------------| or SELECT related_SKU from relationships where SKU='0002' |--------------|---------------| | related_SKU | reciprocal | |--------------|---------------| | 0099 | 0 | |--------------|---------------| What's the best way to do this?

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• Better performance to Query the DB or Cache small result sets?

  - by user169867

  Say I need to populate 4 or 5 dropdowns w/ items from a database. Each drop down will have < 15 items in it. These items almost never change. Now I could query the DB each time the page is accessed or I could grab the values from a custom class that would check to see if they already exist in ASP.Net's cache and only if they don't query the DB to update the cache. It's trivial for me to write but I'm unsure if the performace would be better or not. I think it would be (although not likely anything huge). What do you think?

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• Naive question about implementing RSS

  - by interstar

  I have a naive question about RSS feeds. I have a series of timed events which appear on my site and that I make available as an RSS feed for other applications to import. Who is typically responsible for truncating this feed? Over the next year, I can see my feed having thousands of items. Should the URL mysite.com/rss always return all items? And leave it to the readers to just show the most recent? Or is it more customary that I only return, say, the top 50? Expecting the readers to cache older items? (And, if so, is there a convention for readers to ask the server for the "next page")? What is the typical behaviour of something like FriendFeed when it pulls in an RSS stream?

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• Instantiate ItemsPanelTemplate

  - by Stephan

  I'm trying to create a ItemsControl that has a separator between items, for example a control to create a navigation bread crumb. I want the control to be completely generic. My original method was to create extend ItemsControl, add a SeparatorTemplate property, and then have the class add separators to the ItemsHost of the ItemsControl. The problem with this approach is that if you add extra items to the container panel, the ItemGenerator gets confused and the items are out of order and don't get removed correctly. So my second plan was to create a completely new control that would emulate an ItemsControl, but the problem I'm running into is that I can't find a way to instantiate an ItemsPanelTemplate. I would like to provide an ItemsPanel property just like ItemsControl, but I can't then create a panel from that template. Can anyone think of a way to either instantiate an ItemsPanelTemplate or way to add controls to an ItemsControl's panel without breaking the ItemGenerator?

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• Display a MYSQL field using CAKE

  - by adam

  Forgive me if this is a "homework" question. We have a "Rating" table in our mysql db. I want to display this number on our user profile page. JUST BELOW THE GRAVATAR. here is the code in app/views/user/view.ctp <div class="nhplft"> flash(); ? ?d=identicon&s=100" border="0" alt="My Avatar! UID:" / Change Image link("Home",'/items'); ?  |  link('Add',array('controller' = 'items','action'='add')); ?  |  link('Search',array('controller'='items','action'='index')); ?  |  link("Logout",'/users/logout'); } ?

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• How to 'hide' spurious "declared but never used" warnings?

  - by Roddy

  I'm using the C++Builder compiler which has a minor bug that certain static const items from system header files can cause spurious "xyzzy is declared but never used" warnings. I'm trying to get my code 100% warning free, so want a way of masking these particular warnings (note - but not by simply turning off the warning!) Also, I can't modify the header files. I need a way of 'faking' the use of the items, preferably without even knowing their type. As an example, adding this function to my .cpp modules fixes warnings for these four items, but it seems a bit 'ad-hoc'. Is there a better and preferably self-documenting way of doing this? static int fakeUse() { return OneHour + OneMinute + OneSecond + OneMillisecond; }

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• GAE uploading to database - or - how to create big dictionary in GAE?

  - by Koran

  Hi, I have a GAE application. A new request is to have a huge database to store many items for some functionality. The database needs to populated every week or so - and populating it is done by querying many external links which overall takes around 1-2 hours. So, doing it via GAE Cron is now out of the question. Another option I was thinking was to create it in external server and then uploading it to GAE DB. Is it possible to upload the data created externally to GAE DB straightaway? The question is because there will be close to 10 M items in it, so adding items individually to a DB is not going to work due to 30 second time limit. Thanks K

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• Doing a generic <sql:query> in Grails

  - by melling

  This is a generic way to select data from a table and show the results in an HTML table using JSP taglibs. What is the generic way to do this in Grails? That is, take a few lines of SQL and generate an HTML table from scratch in Grails, including the column names as headers. <sql:query var="results" dataSource="${dsource}" select * from foo </sql:query (# of rows: ${results.rowCount}) <table border="1" <!-- column headers -- <tr bgcolor=cyan <c:forEach var="columnName" items="${results.columnNames}" <th<c:out value="${columnName}"/</th </c:forEach </tr <!-- column data -- <c:forEach var="row" items="${results.rowsByIndex}" <tr <c:forEach var="column" items="${row}" <td<c:out value="${column}"/</td </c:forEach </tr </c:forEach </table The solution to this was answered in another StackOverFlow question. http://stackoverflow.com/questions/425294/sql-database-views-in-grails IF SOMEONE WRITES A GOOD ANSWER, I'LL ACCEPT IT. I would like a 100% acceptance on all of my questions.

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• PHP: How to automate building a 100 <UL>/<LI> menuitems, while keeping the Menu Structure File Flat / Simply Managable?

  - by Sam

  Above: current "stupid" menu. (entire ul/li menu for javascript menu system) + (some li lines as page-specific submenu) Hi folks! With passion for automation and elegancy, but limited knowledge/knowhow, im stuck with "my hands in my hair" as we Dutch say, for my current menu system works perfectly, but is a pain in the a*s to update! So, i would appreciate it greatly, if you can suggest how to automate this in php: how to let the php generate the html menu code basing on a flat menu input file with TABS indented. OLD SITUATION <ul> <!-- about 100 of these <li>....</li> lines --> <li><a href="carrot.php"><p class="mnu" style="background-position:0 -820px"><? echo __("carrot juice") ?></p></a></li> <!-- lots of data, with only little bit thats really the menu itself--> </ul a javascript file reads a ul/li structure as input to build menu of format in that ul/li, the items with a hyperlink and sprite-bg position represent webpages, (inside LI) while items without hyperlink and sprite-bg are just headers of that menusection, (inside H6) to highlight the current page in the menu, the javascript menumaker uses an id number. this number corresponds to the consequtive li that is a webpage, skips h6 headers correctly. these h6 headers are only there for when importing sections of the same menu as submenu. non-li headers are not shown in menu, nore counted by the javascript menu for their ID. to know which page should be shown, i have to count from ID 0, the li items till finding the current webpage in the li structure and then manually put it in each webpage! BUT: changing an item in li order, means stupidly re-counting their entire li again! each webpage has an icon (= sprite bg-position numer), which is also used in the webpage. INTENDED RESULT I dream of, once setting what the current webpage is (e.g carrot.php) the menu system automatically "finds" and "counts" the li's and returns the id nr (for proper highlight of main menu); generates the entire menu html, and depending on which headings are set for submenu, (e.g. meals, drinks) generates those submenu (entire section below each given header); ginally adds h5 highlight inside the li of that submenu item. For the menu, i wish an easily readable, simple plain txt menu that is indented with tabs, (each tab is one depth for example) and further tabs follow for url and sprite position of icon. MY DREAM MENU-MANAGEMENT FILE |>TAB SEPARATED/INDENTED FLATMENU FILE |MUST BE CALCULATED BY PHP: |>MENUTEXT============URL=============SPRITE=====|ID===TAG================== |>about "#" -520 |00 li |> INFORMATION |—— h6 |> physical state "physical.php" -920 |01 li |> mental health "mental.php" -10 |02 li |> |>apetite "#" -1290 |03 li |> meals "#" -600 |04 li |> COLD MEAL |—— h6 |> egg salade "salad.php" -1040 |05 li |> salmon fish "salmon.php" -540 |06 li |> HOT MEAL |—— h6 |> spare ribs "spareribs.php" -120 |07 li |> di macaroni "macaroni.php" -870 |08 li |> |> drinks "#" -230 |09 li |> JUCY DRINK |—— h6 |> carrot juice "carrot.php" -820 |10 li |> mango hive "mango.php" -270 |11 li DESIRED CHRONOLOGY php outputs the entire ul/li html so the javascript can show the menu: webpage items go inside li tags, and header items go inside h6 tags, e.g. <h6>JUCY DRINK</h6> Each website page has a url filename [eg: salad.php]. Based on this given fact, the php menu generator detects the pagename, gives the IDnr of the position of that page according to the li-item nr and sets variable for javascript to highlight current menu item. the menu items below the specified headers are loaded as submenu in which the current page.php is wrapped inside h5 to highlight current page in submenu: e.g. (<li><h5><a href="carrot.php"><p>..etc..</p></h5></li> Question Which methods / steps / (chronological)ways are there for doing this? I am no good in php programming, but am learning it so please dont write any code without a line of comment why I should use that method etc. Where do I start? If I am unclear in my question, please ask. Thanks. Much appreciated!! Concrete Task List from the provided Comments/Answers, sofar: (RobertB) First, get some PHP code working that can read through a tab-delimited file and put the data into an appropriate data structure. NOW WORKING AT THIS

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• PHP controllable menubar position

  - by craide

  I'm an admin for a page and I want to give certain users dynamic control of the menubar layout. The ideal would be a page with a list with menu items and arrows pointing up and down with each item and when you click them the item is reordered. I have a pretty basic idea of how I can do it but I would like some suggestions. The items are stored in MySQL and I only need help figuring out how the items should be ordered or numbered and how to re-order them. This probably needs some javascript trickery and I'm not familiar with JS.

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• How to roll my own index in c#?

  - by bill seacham

  I need a faster way to create an index file. The application generates pairs of items to be indexed. I currently add each pair as it is generated to a sorted dictionary and then write it out to a disk file. This works well until the number of items added exceeds one million, at which time it slows to the point that is unacceptable. There can be as many as three million data items to be indexed. I prefer to avoid a database because I do not want to significantly increase the size of the deployment package, which is now less than one-half of one megabyte. I tried Access but it is even slower than the sorted dictionary -if it had an efficient bulk load utility then that might work, but I do not find such a tool for Access. Is there a better way to roll my own index?

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• UIScrollView - with paging enabled, can I "change" the page width?

  - by Mike McMaster

  What's the simplest way to have a scroll view (with pagingEnabled set to YES) have a page width set to something other than the scroll view's bounds? Let me give an example. Suppose I have a scroll view with 10 items, each 150 pixels wide, and my scroll view is 300 pixels wide. If I start with views 1 and 2 visible and scroll horizontally to the right, I want the next "page" to show items 2 and 3. If I scroll one more page to the right, I would see items 3 and 4. Has anyone done this? If not, what strategy would you use?

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• how to write sql script to achieve the following

  - by 3nigma

  hi, so i have a table lets say call it "tbl.items" and there is a column "title" in "tbl.items" i want to loop through each row and for each "title" in "tbl.items" i want to do following: the column has the datatype nvarchar(max) and contains a string... filter the string to remove words like in,out, where etc (stopwords) compare the rest of the string to a predefined list and if there is a match perform some action which involves inserting data in other tables as well.. the problem is im ignotent when it comes to writing T-sql scripts, plz help and guide me how can i achieve this? whether it can be achieved by writing a sql script?? or i have to develope a console application in c# or anyother language?? im using mssql server 2008 thanks in advance

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• See if item exists once in Enumerable (Linq)

  - by Stacey

  Given a list... class Item { public Name { get; set; } } List<Item> items = new List<Item> { new Item() { Name = "Item 1" }, new Item() { Name = "Item 1" }, new Item() { Name = "Item 2" }, new Item() { Name = "Item 3" } } List<Item> listing = new List<Item> { new Item() { Name = "Item 1" }, new Item() { Name = "Item 2" }, new Item() { Name = "Item 3" } new Item() { Name = "Item 4" } } etc. I need to create a third array that will cancel out double instances between the two; however items with "Name 1" are both the same, but different 'instances'. So the third List should have 1 instance of Item 1, since 'items' had 2 instances. Any ideas of how this can be done through Linq?

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• ASP.NET DropDownList Replacement

  - by user302004

  Currently, I'm populating a drop down list when a file is created in a configurable folder. if (!downloadRspDropDown.Items.Contains(new ListItem(txt, fileData.FullName)) Then, I add the file and remove "No Responses Available". However, if the same file is resubmitted (i.e., the file name is the same but the timestamp is different), then I want to remove the older entry and replace it with a new entry in the drop down list. I have the filename, so I go into the "else" block from the line of code above. From there, I'm checking to see if I have the same filename and a different creation time. if (downloadRspDropDown.Items.Contains(new ListItem(txt, fileData.FullName) && downloadRspDropDown.Items.Contains(new ListItem(txt, fileData.CreationTime) From here, I want to find the position, remove it, and add the new text. This approach isn't working. Can anyone offer an alternate approach?

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• Ajax DragPanelExtender drag an item from one panel to another

  - by Morgeh

  I have a panel called "ItemPot" and several panels called "ItemBank1", "ItemBank2" etc. Currently I have dynamically added 5 items to the pot and given each one a DragPanelExtender so that those items can be moved around within the panel, however what I wan't to be able to do is to move those items into the banks and then save there new parent ID ("itembank1") to the database using C#. Does anyone know of an easy way of doing that? I have looked around the internet and I have found loads of ways of doing similar things using JQuery or Mootools but I would rather not have to use Javascript if possible, I know that might be wishful thinking lol.

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• Dynamically render partial templates using mustache

  - by btakita

  Is there a way to dynamically inject partial templates (and have it work the same way in both Ruby & Javascript)? Basically, I'm trying to render different types of objects in a list. The best I can come up with is this: <div class="items"> {{#items}} <div class="item"> {{#is_message}} {{< message}} {{/is_message}} {{^is_message}} {{#is_picture}} {{< picture}} {{/is_picture}} {{^is_picture}} {{/is_picture}} {{/is_message}} </div> {{/items}} </div> For obvious reasons, I'm not super-psyched about this approach. Is there a better way? Also note that the different types of models for the views can have non-similar fields. I suppose I could always go to the lowest common denominator and have the data hash contain the html, however I would rather use the mustache templates.

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• Apache thrift, struct contain itself

  - by mamu

  I am looking into thrift for serialization of data. But Document says cyclic structs - Structs can only contain structs that have been declared before it. A struct also cannot contain itself One of our requirement is Struct A List of Child items Items(Items are Struct A ) So reading requirement i can't have Struct within itself at any level? can i have it in cyclic model as i have it above. Struct is not member of Struct directly but it has some other member and it contains struct. Their document is not so well descriptive. Is it possible in Thrift? Does protobuf supports it?

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• Finding parents where child collection does not contain an item

  - by Colin Bowern

  I am trying to get a list of parents where the child collection does not contain an item of a specific type. The LINQ equivalent would be something like: dataset.Where(x => x.Items.FirstOrDefault(y => y.Type.Code == "ABC") == null) The object model is Parent Child (Items) Type Code If Parent is my aggregate root, how would I model this in NHibernate criteria/query? Here's my first attempt: var results = session.CreateCriteria<Parent>() .CreateCriteria("Items") .CreateCriteria("Type") .Add(Restrictions.Not(Restrictions.Eq("Code", "ABC"))) .SetResultTransformer(Transformers.DistinctRootEntity) .List<Parent>(); This doesn't seem to return the right entities - it just returns them all.

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