I've got an HQL statement like this: select new map (f1 as field1, (select ...) as field2) from ... where ... order by field2; It fails saying "Unknown column 'field2'". I experienced this in general that when using the "new map" statement, I can't reference the map names in the order by field. As HQL subqueries are only allowed in t...
Hey guys, I have sort of a simple question. I am writing an Objective-C program with some multithreading. I have a global NSArray, and I add objects into that NSArray from a method that is called in a new thread. If the objects I add into that NSArray are new objects created in that method (local), will that create memory access and/or ...
I've got a C++ data-structure that is a required "scratchpad" for other computations. It's not long-lived, and it's not frequently used so not performance critical. However, it includes a random number generator amongst other updatable tracking fields, and while the actual value of the generator isn't important, it is important that th...
Should I be using $("#myElement") or $(myElement)? Both appear to work. ...
I want to define a property for a working directory(say work.dir=/home/username/working-directory), for my production .properties file, without hard-coding the /home/username.I want to reference the system property user.home in place on the hard-coded /home/username, to make work.dir more generic. How do I reference the system property a...
What is this? This is a collection of questions that come up every now and then about syntax in PHP. This is also a Community Wiki, so everyone is invited to participate in maintaining this list. Why is this StackOverflow does not allow searching for particular characters. As a consequence, many questions about operators and other sy...
What is the use of 'non type template' parameters which are of 'reference' type? Why are such parameters also treated as 'rvalues'? template<int &n> void f(){ &n; // error } int main(){ int x = 0; f<x>(); } ...
I have created an ASP.NET class. In that class i would like to use the Server.UrlEncode. Why intellisense is not helping me at all and instead of Server.UrlEncode it displays the HttpServerUtility? I have already a reference to system.web ...
I have an existing application in C++ with a custom ArrayBase class that manages storage and access to a contiguously allocated region of memory. I have a separate ItrBase class that is used to access data in that ArrayBase. ArrayBase has a createItr() function that currently returns an ItrBase object. I need to extend ArrayBase to us...
Hi, I have a question. Can anyone tell me why someone would declare parameter r like that ? Whats the difference between Record& r and Record(&r) ? QDataStream& operator>>(QDataStream &s, Record(&r)) { } Thanks :) ...
let's assume we have an array like this $arr=array(array('a'=>1,'b'=>2),array('c'=>3,'d'=>4)); and a reference to one of its elements $element=&$arr[1]['c']; My question is is it possible to get back to the original array using the reference alone? That is to get back to the parent array in some way without knowing it by name... Th...
I am trying to copy code from one project to another. There is one problem however: The type 'Microsoft.Practices.EnterpriseLibrary.Data.Sql.SqlDatabase' is defined in an assembly that is not referenced. You must add a reference to assembly 'Microsoft.Practices.EnterpriseLibrary.Data, Version=3.1.0.0, Culture=neutral, PublicKeyToken=nu...
Thanks for taking the time to read. =) The problem I am having is mainly Object visibility. I'm creating objects and attempting to create references to them before they have been initialized or have any data in them. You can get an idea what I'm trying to do here with the code provided. Certain Squares can see other square ect. Now my ...
I create a .NET (WPF) Application, and compile it to .EXE. Then I create a second project, and add a reference to the compiled .exe, I can see all the classes and forms, and can use them for automation, etc. I want to prevent other people from using my compiled .exe as a .dll, so I changed all my classes to 'Friend' instead of 'Public',...
I recently upgrade my machine to XP 64 bit and also made some code changes to our software and when I'm doing new XmlSerializer(valueType), where valueType is a type that is using DirectoryItem, I'm getting the following error: Unable to generate a temporary class (result=1). error CS0012: The type 'XYZ.Blob.DirectoryItem' is defin...
I am getting this error when trying to create a remote tracking branch git co -b release_2.6 origin/release_2.6 warning: refname 'origin/release_2.6' is ambiguous. warning: refname 'origin/release_2.6' is ambiguous. fatal: Ambiguous object name: 'origin/release_2.6'. I only have these two refs defined with release_2.6 git show-ref | ...
class A{ }; class B{ public: B(); B(const &A); }; void foo(A &a){ } int main(){ B b; foo(b); //error: invalid initialization of reference of type ‘A&’ from expression of type ‘B’ return 0; } In the above code, I have a compilation error error: invalid initialization of reference of type ‘A&’ from expression of ty...
Hi there, is it possible to model a reference to "any" (entity) with JPA? Similar to a reference of type Object in Java, which can hold any object. Thanks for your answer, Dominik ...
When creating references between ECore entities there is the possibility to mark a reference as "containment". Can somebody explain me in easy words what's the difference between a plain reference and a containment? The definitions and explainations I found so far didn't do the trick for me. ...
I have a big multidimensional array that holds references to objects and I need to be able to move a reference from one spot in the array to another and then delete the original reference (or set it to undefined). The problem with this is it then deletes the recent reference. var data = [[new Obj, new Obj], [new Obj, new Obj]]; functio...