In the MVC RC 2 docs, we find: Expression-based helpers that render input elements generate correct name attributes when the expression contains an array or collection index. For example, the value of the name attribute rendered by Html.EditorFor(m => m.Orders[i]) for the first order in a list would be Orders[0]. Anyone care to lin...
We've got a Class called Group, it contains a collection of questions and it also contains collection of groups (i.e. we have a potential nesting of groups). Expressed in XML this might look something like this: <group id="Group1"> <questions> <question id="questions11"/> </questions> <groups> <group id="group12"> ...
Hi, My object looks something like this: class { int a; object b; IList<string> c; } All the fields are getting populated from the database and the collection is getting lazy initialization which is desirable. Now, my problem is that I want to send this object to the web service. But since the collection is lazily loaded...
How would you succinctly assert the equality of collections elements, specifically a Set in JUnit 4? ...
I have a MyBean annotated @XmlRootElement public class MyBean ... Marshalling/Unmarshalling MyBean w/o problems, e.g. JAXBContext jaxbCtx = JAXBContext.newInstance(MyBean.class); Marshaller m = jaxbCtx.createMarshaller(); m.marshal(myBean, writer); How can I use JAXB to marshall/unmarshall a Collection or List? My attempt results ...
Hi there I'm busy preparing for the MCTS 70-536 exam, according to the exam book (Microsoft Press - .NET Framework - Application Development Foundation Self Paced Training Kit 2nd Edition), this code sample: ArrayList al = new ArrayList(); al.AddRange(new string[] { "Hello", "world", "this", "is", "a", "test" }); Console.WriteLine(al.B...
Hi all, I noticed a strange behavior (for me) when sorting a list retrieved with Arrays.asList(). It seems that after Collections.sort( list ), the origin array is also sorted ! How is it possible ? List<Rate> rates = Arrays.asList( arrayRates ); Collections.sort( rates, new RateEffectiveDateComparator() ); /* after that the rates lis...
Hi, I'm looking for a implementation of java.util.Queue or something in the Google collection who behave like a Queue, but also ensure that each element of the queue is unique. (all further insertion will have no effect) It's that possible, or will I have to do it by hand? For now I'm using a Queue, with a LinkedList implementation, a...
I am currently doing this: Set<String> listOfTopicAuthors = .... List<String> list = Arrays.asList( listOfTopicAuthors.toArray( new String[0] ) ); Can you beat this ? ...
Is there a standard Java (1.5+) implementation (i.e. no 3rd party) of a collection which allows me to glue several collections into one? Here's a sketch, of how it works: final SomeCollection x = new SomeCollection(); final ArrayList a = new ArrayList(); a.add("first"); assert(a.size() == 1); x.embed(a); // don't know for sure, if th...
Hello boys and girls. I'm trying to get my head around collection_selects in Rails. I can populate the dropdown from a database table, submit the selected option, and show the result. However I can't figure out how to show the selected option in the dropdown when the user chooses to edit the entry. Here's an extract from my view code: ...
Hi there, Is there a way to get the first item of a non indexed collection in HQL, nested in a select statement? f.e. FROM ProjectPhase p WHERE p.Statusses[0].FullFilled = 'True' When p.Statusses is an IList, this works because the list is indexed but if p.Statusses is a bag, this doesn't work (because the items in a bag aren't indexed)...
Imagine you have a set of five elements (A-E) with some numeric values of a measured property (several observations for each element): A = {100, 110, 120, 130} B = {110, 100, 110, 120, 90} C = { 90, 110, 120, 100} D = {120, 100, 120, 110, 110, 120} E = {110, 120, 120, 110, 120} First, I have to detect if there are significant differen...
I have two very large tables and I need to process a small resultset from these tables. However, processing is done in several functions each and function must do some joining in order to format the data in proper way. I would definitely need to cache the initial resultset somehow so it can be reused by the functions. What I would like ...
I have the need to embed an object (A Dictionary) in an assembly. The Dictionary was created and populated within another application. I know I can serialize the dictionary to a file and then embed that file - just wanted to see if there were any preferable methods. I am also unaware if there is a significant performance issue of readin...
Sometime in VB.net i have something like: For Each El in Collection Write(El) Next But if i need the index number, i have to change it to For I = 0 To Collection.Count() - 1 Write(I & " = " & Collection(I)) Next Or even (worse) I = 0 For Each El In Collection Write(I & " = " & El) I += 1 Next Is there another way of ...
What is the best having when implementing Memento pattern (for Undo/Redo) in witch collection to Keep Mementos? Basically, I need this(c = change, u = undo, r = redo): 0 *c -1 0 *c -2 -1 0 *c -3 -2 -1 0 <u ...
I dont understand why I cannot do the below - This should work?? foreach (DataRow dataRow in dataTable.Rows) { if (true) { dataRow.Delete(); } } ...
PriorityBlockingQueue is unbounded, but I need to bound it somehow. What is the best way to achieve that? For information, the bounded PriorityBlockingQueue will be used in a ThreadPoolExecutor. NB: By bounded I don't want to throw Exception if that happens, I want to put the object in the queue and then cut it based on its priority va...
I just stumbled on one of Tony Morris' blog-posts about Java and a fundamental problem with the language: that of defining a bespoke equality-relation for a collection. This is something that I think is a big deal and wondered whether there was some scala solution. The classic issue manifests itself in thinking about, say, a trade. Let...