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• Setting the primary key of a object type table in Oracle

  - by Rek

  I have two Oracle questions. How can I set the primary key of a table when the table is made up of an object type? e.g. CREATE TABLE object_names OF object_type I have created a Varray type, CREATE TYPE MULTI_TAG AS VARRAY(10) OF VARCHAR(10); but when I try to do SELECT p.tags.count FROM pg_photos p; I get an invalid identifier error on the "count" part. p.tags is a MULTI_TAG, how can I get the number of elements in the MULTI_TAG?

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• Resharper and Custom Live Template Not Working

  - by Bryce Fischer

  Working with Unity, I thought it would be a good idea to create some LiveTemplates to help out with creating configuration entries. For example, I want to create some typeAlias elements in a file called "unity.config": <typeAlias alias="QueryService" type="type,QueryAssembly"/> So, I created a live template: Shortcut: typeAlias Available "in all files" <typeAlias alias="$ALIAS$" type="$TYPE$,$ASSEMBLY$"/> the unity.config file is an XML file. I put the cursor in an empty spot and type "typeAlias" and then the tab key. Nothing happens. Any ideas?

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• iPhone NSXMLParser parsing string and storing in a NSNumber variable and different data types

  - by anubhav

  Hi, I am trying to parse a XML File using NSXMLParser, I also have a Container class, in which I have a few instance variables. One of the elements that I am trying to parse in the XML is: <book sn="32.859669048339128" pn="-116.917800670489670"> I am trying to save the value of sn and pn in an instance variable of object Container: NSNumber *sn, NSNumber *pn. I want it so that when my parser get the attributeValues it can save it as a Double (or float) in those NSNumber pointers. Right now, all it does it just saves a string to the NSNumber. The Parser Code looks like this: if([elementName isEqualToString:@"book"]){ container = [[Container alloc] init]; container.sn=[attributeDict objectForKey:@"sn"]; container.pn=[attributeDict objectForKey:@"pn"]; } I want it so that the type of container.sn is initialized to a float or double. Any ideas how to do this? Thanks in advance!

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• Qt: Background color on QStandardItem using StyleSheet

  - by Johan

  Hi I have a class that inherits QStandardItem and I put the elements in a QTreeWidget. The class receive notifications from the outside and I want to change the background color of the item based on what happened. If I do not use stylesheets it works just fine, like this: void myClass::onExternalEvent() { setBackground(0, QColor(255,0,0))); } However as soon as I put a stylesheet on the QTreeWidget this has no effect, the stylesheet seems to override the setBackground call. So I tried : void myClass::onExternalEvent() { this-setStyleSheet("background-color: red"); } but this is probably all wrong, it changed the color of some other element on my screen, not sure why. So anyone have an idea on how I can alter the background color like with setBackgroundColor but still be able to use stylesheet on my QTreeWidget?

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• Using XSD to validate node count

  - by heath

  I don't think this is possible but I thought I'd throw it out there. Given this XML: <people count="3"> <person>Bill</person> <person>Joe</person> <person>Susan</person> </people> Is it possible in an XSD to force the @count attribute value to be the correct count of defined elements (in this case, the person element)? The above example would obviously be correct and the below example would not validate: <people count="5"> <person>Bill</person> <person>Joe</person> <person>Susan</person> </people>

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• Equality between two enumerables

  - by Berryl

  I have two enumerables with the exact same reference elements, and wondering why Equals wouldn't be true. As a side question, the code below to compare each element works, but there must be a more elegant way Cheers, Berryl var other = (ActivityService) obj; if (!AllAccounts.Count().Equals(other.AllAccounts.Count())) return false; for (int i = 0; i < AllAccounts.Count(); i++) { if (!AllAccounts.ElementAt(i).Equals(other.AllAccounts.ElementAt(i))) { return false; } } return true;

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• Inform Activity from a BroadcastReceiver ONLY if it is in the foreground

  - by Zordid

  Hi there! Maybe it's easy, but I couldn't really figure this out right so far... I got a BroadcastReceiver waiting to get triggered by the AlarmMangager - this works fine. Now: because the event, if it occurs, needs to refresh some elements on screen of the main Activity, I would like to send an Intent from that background BroadcastReceiver to my Activity - but only if it is currently in the foreground, aka active. If it is not running or not visible, I don't care - and the last thing I want to do is start the Activity by my intent! I handle repainting of the views in my onResume method, so I don't care at all. Any hints on how to do that? Thanks! EDIT: my BroadcastReceiver is waiting for alarms that must be notified to the user. So, it must be there and declared in the manifest. The problem is: it will have to decide whether the mentioned Activity is currently up in front or not.

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• Django Managers

  - by owca

  I have the following models code : from django.db import models from categories.models import Category class MusicManager(models.Manager): def get_query_set(self): return super(MusicManager, self).get_query_set().filter(category='Music') def count_music(self): return self.all().count() class SportManager(models.Manager): def get_query_set(self): return super(MusicManager, self).get_query_set().filter(category='Sport') class Event(models.Model): title = models.CharField(max_length=120) category = models.ForeignKey(Category) objects = models.Manager() music = MusicManager() sport = SportManager() Now by registering MusicManager() and SportManager() I am able to call Event.music.all() and Event.sport.all() queries. But how can I create Event.music.count() ? Should I call self.all() in count_music() function of MusicManager to query only on elements with 'Music' category or do I still need to filter through them in search for category first ?

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• CSS: resolution problem

  - by Syom

  my site has three div elements, header, content and footer. i have a picture in header, and i want, that under big resolutions too it looks nice. so i take big image, with 1800px width. by so it looks nice in resolution of 1800, but now, in small resolutions(for example 1024), it shows only first 1024px of my picture, but i want it to show the center 1024px of picture. so is there any way, to set the backgound-image very big, but in small resolutions show center part of image? #header { background-image:url(../img/bg_header1.jpg); background-repeat:no-repeat; height:357px; width:100%; } thanks in advance

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• Hex colors: Numeric representation for "transparent"?

  - by Pekka

  I am building a web CMS in which the user can choose colours for certain site elements. I would like to convert all colour values to hex to avoid any further formatting hassle ("rgb(x,y,z)" or named colours). I have found a good JS library for that. The only thing that I can't get into hex is "transparent". I need this when explicitly declaring an element as transparent, which in my experience can be different from not defining any value at all. Does anybody know whether this can be turned into some numeric form? Will I have to set up all processing instances to accept hex values or "transparent"? I can't think of any other way.

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• split a list using linq

  - by Anonym

  I've the following code: var e = someList.GetEnumerator(); var a = new List<Foo>(); var b = new List<Foo>(); while(e.MoveNext()) { if(CheckCondition(e.Current)) { b.Add(e.Current); break; } a.Add(e.Current); } while(e.MoveNext()) b.Add(e.Current) This looks ugly. Basically, iterate through a list and add elements to one list until some condition kicks in, and add the rest to another list. Is there a better way e.g. using linq ? CheckCondition() is expensive, and the lists can be huge so I'd prefer to not do anything that iterates the lists twice.

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• R strsplit and vectorization

  - by James

  When creating functions that use strsplit, vector inputs do not behave as desired, and sapply needs to be used. This is due to the list output that strsplit produces. Is there a way to vectorize the process - that is, the function produces the correct element in the list for each of the elements of the input? For example, to count the lengths of words in a character vector: words <- c("a","quick","brown","fox") > length(strsplit(words,"")) [1] 4 # The number of words (length of the list) > length(strsplit(words,"")[[1]]) [1] 1 # The length of the first word only > sapply(words,function (x) length(strsplit(x,"")[[1]])) a quick brown fox 1 5 5 3 # Success, but potentially very slow Ideally, something like length(strsplit(words,"")[[.]]) where . is interpreted as the being the relevant part of the input vector.

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• CSS child selector (>) doesn't work with IE

  - by Eric

  The following CSS works well under firefox but doesn't work under IE browser, Why? Also, how can I make only the elements, directly under the parent element, be affected by CSS? CSS: .box{font:24px;} .box>div{font:18px} .box>div>div{font:12px;} HTML: <div class="box"> level1 <div> level2 <div> level3</div> <div> level3</div> </div> <div> level2 <div> level3</div> <div> level3</div> </div> </div>

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• jqGrid footer cells "inherits" CSS from cells in the main grid

  - by Tore

  I have a footerrow in my jqGrid where I sum up the values in some of the columns. I set the footer using the 'footerData' function when the grid has completed loading. This requires the 'footerrow' property in the grid-options to be set to 'true'. Some of the columns which I don't sum up have CSS applied to them (to show some icons in the cells), which is set using the 'classes' property in the colModel API. The problem is that these CSS-classes are also applied to the cells in the footerrow. I don't want them applied there, but I don't know how to prevent them from being shown. I tried to use jQuery to remove the 'class' property from the td elements after calling the 'footerData' function. The problem is that while the grid is loading, the icons are flashed to the user. How can I prevent the CSS from being applied in the first place?

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• FF extension: a popup with dynamic menuitems, with each menu item having another popup

  - by encryptor

  I am building an extension that has a popup whose elements are constructed by a function call everytime the mouse hovers over the popup option. I am able to achieve this. Now I need to have a popup for each of the menu item (inside the original popup) which is not dynamic though. I have this code, but it does not work: var myMenuPopup = document.getElementById("file-popup4"); for (var m=0; m var newItem = document.createElement("menupopup"); newItem.setAttribute("label", publicdisplayname[m]); newItem.setAttribute("id", "public" + m); var new1 = document.createElement("menuitem"); new1.setAttribute("label","Home"); new1.setAttribute("id", "publichome" + m); newItem.onclick = function(){ } newItem.appendChild(new1); myMenuPopup.appendChild(newItem); but this doesnt work. Can someone please help me out with whats the problem

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• (C#) iterate over read-only private collection member

  - by DGH

  I have a class which has two HashSet collections as private members. Other classes in my code would like to be able to iterate over those HashSets and read their contents. I don't want to write a standard getter because another class could still do something like myClass.getHashSet().Clear(); Is there any other way to expose the elements of my HashSets to iteration without exposing the reference to the HashSet itself? I'd love to be able to do this in a way that is compatible with for-each loops.

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• ASP.NET:Integrating many pages to one using jQuery UI dialog

  - by Shyju

  I have a four ASP.NET pages,Page 1.aspx,Page2.aspx,page3.aspx and page4.aspx.Normally the user will come to Page1 and then enter his data in the form elements.On clicking on the Go button Page 2 will come and so on up to page 4.Now i want to Integrate all of these items to A single page using jQuery LightBox/UI dialog modal popup.In my all pages i have server side code to do some Business logic.So I tried to Put the contents of page 2 in a panel and put it in the UI modal dialog and placed in page 1 and invoke the UI dialog from page 1 's button click.But my problem is I am not sure when i click on the button of the panel which is placed in the UI dialog, will trigger the server side code .I had some problems when i tried it earlier http://stackoverflow.com/questions/876660/asp-net-with-jqueryui-text-box-value-is-getting-as-null-in-button-click-event Please advice Thanks in advance

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• .net multilingual cms

  - by Adam

  i am planning a simple, dual-language website and i'd like to use a .net based cms but i can't find anything suitable. i have experience with dotnetnuke and sharepoint but neither fit the bill - dotnetnuke does not do dynamic site elements multi-lingually & sharepoint is a monster PITA no matter what angle you look at it :). i am on the verge of choosing Joomla! & Joom!Fish. they fit the bill nicely, with one exception: i would like to create some cms plug-ins and i would much prefer to write them in .net. any suggestions?

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• ASP.Net MVC 2: How to keep values in the model between posts

  - by Andreas

  I have an edit view that is displaying some model properties as plain text and other model properties as input fields. My problem is that the model properties displayed as plain text are null when the model is returned to the view after a validation error. How do I retain the model values when I don't have input fields for all properties? What is best practice? My first thought is to keep the values of these properties in hidden input elements. <%= Html.HiddenFor(model => model.CustomerName) %> Is this considered a correct solution? Thanks Andreas

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• Question with R. Element wise multiplication, addition, and division with 2 data.frames with varying

  - by Michael

  I have a various data.frames with columns of the same length where I am trying to multiple 2 rows together element-wise and then sum this up. For example, below are two vectors I would like to perform this operation with. > a.1[186,] q01_a q01_b q01_c q01_d q01_e q01_f q01_g q01_h q01_i q01_j q01_k q01_l q01_m 3 3 3 3 2 2 2 3 1 NA NA 2 2 and > u.1[186,] q04_avl_a q04_avl_b q04_avl_c q04_avl_d q04_avl_e q04_avl_f q04_avl_g q04_avl_h q04_avl_i q04_avl_j q04_avl_k q04_avl_l q04_avl_m 4 2 3 4 3 4 4 4 3 4 3 3 3` The issue is that various rows have varying numbers of NA's. What I would like to do is skip the multiplication with any missing values ( the 10th and 11th position from my above example), and then after the addition divide by the number of elements that were multiplied (11 from the above example). Most rows are complete and would just be multiplied by 13. Thank you!

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• Html Attribute for Html.Dropdown

  - by kapil

  I am using a dropdown list as follows. <%=Html.DropDownList("ddl", ViewData["Available"] as SelectList, new { CssClass = "input-config", onchange = "this.form.submit();" })%> On its selection change I am invoking post action. After the post the same page is shown on which this drop down is present. I want to know about the HTML attribute for the drop down which will let me preserve the list selection change. But as of now the list shows its first element after the post. e.g. The dropdoen contains elements like 1,2,3,etc. By default 1 is selected. If I select 2, the post is invoked and the same page is shown again but my selection 2 goes and 1 is selected again. How can preserve the selection? Thanks, Kapil

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• How to marshal a COM-Parameter as VT_ARRAY of VT_RECORD

  - by Oliver Japes

  I've already done some extensive search, but I can't seem to find anything matching my problem. The task I'm currently working on is to create a WCF-Wrapper for some DCOM-Objects. This already works great for the most parts, but now I'm stuck with one invocation that expects a VT_ARRAY containing VT_RECORD-Objects. Marshalling as VT_ARRAY is not a problem, but how can I tell COM that the elements in this array are VT_RECORDs? This is the invocation as I current use it. InitTestCase(testCaseName, parameterFileName, testCase, cellInfos.ToArray()); The parameter I'm talking about is the last one. It's defined as List<CellInfo>, CellInfo itself is already attributed with Guid("7D422961-331E-47E2-BC71-7839E9E77D39") and ComVisible(true). It's not a struct but a class. This is the condition failing on the native side: if (VT_RECORD == varCellConfig.vt)... Because of old software using these interfaces, changing the native side is not an option Any idea?

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• jQuery :contains selector to search for multiple strings

  - by Stefan

  Assuming i have: <li id="1">Mary</li> <li id="2">John, Mary, Dave</li> <li id="3">John, Dave, Mary</li> <li id="4">John</li> If i need to find all <li> Elements which contain "John" and "Mary", how would i construct the jQuery? A search for a single string seems easy: $('li:contains("John")').text() I am looking for something like the following pseudo code: $('li:contains("John")' && 'li:contains("Mary")').text() Thanks!

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• reservoir sampling problem

  - by eSKay

  This MSDN article proves the correctness of Reservoir Sampling algorithm as follows: Base case is trivial. For the k+1st case, the probability a given element i with position <= k is in R is s/k. The probability i is replaced is the probability k+1st element is chosen multiplied by i being chosen to be replaced, which is: s/(k+1) * 1/s = 1/(k+1), and prob that i is not replaced is k/k+1. So any given element's probability of lasting after k+1 rounds is: (chosen in k steps, and not removed in k steps) = s/k * k/(k+1), which is s/(k+1). So, when k+1 = n, any element is present with probability s/n. about step 3: What are the k+1 rounds mentioned? What is chosen in k steps, and not removed in k steps? Why are we only calculating this probability for elements that were already in R after the first s steps?

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• Simpler Linq to XML queries with the DLR

  - by Xavier

  Hi folks, I have a question regarding Linq to XML queries and how we could possibly make them more readable using the new dynamic keyword. At the moment I am writing things like: var result = from p in xdoc.Elements("product") where p.Attribute("type").Value == "Services" select new { ... } What I would like to write is something like: var result = from p in xdoc.Products where p.Type == "Services" select new { ... } I know I can do this with Linq to XSD which is pretty good already, but obviously this requires an XSD schema and I don't always have one. I am sure there should be a way to achieve this using the new dynamic features of .NET 4.0 but I'm not sure how or if anyone already had a go at this. Obviously I would loose some of the advantages of Linq to XSD (typed members and compile time checks) but it wouldn't be worse than the original solution and would certainly be more readable. Anyone has an idea? Thanks

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