Within an event, I'd like to put the focus on a specific TextBox within the ListViewItem's template. The XAML looks like this: <ListView x:Name="myList" ItemsSource="{Binding SomeList}"> <ListView.View> <GridView> <GridViewColumn> <GridViewColumn.CellTemplate> <DataTemplate> ...
This question comes out of the discussion on tuples. I started thinking about the hash code that a tuple should have. What if we will accept KeyValuePair class as a tuple? It doesn't override the GetHashCode() method, so probably it won't be aware of the hash codes of it's "children"... So, run-time will call Object.GetHashCode(), whic...
I've been working with databases for the last few years and I'd like to think that I've gotten fairly competent with using them. However I was reading recently about Joel's Law of Leaky Abstractions and I realised that even though I can write a query to get pretty much anything I want out of a database, I have no idea how the database a...
While working on a C# app I just noticed that in several places static initializers have dependencies on each other like this: static private List<int> a = new List<int>() { 0 }; static private List<int> b = new List<int>() { a[0] }; Without doing anything special that worked. Is that just luck? Does C# have rules to resolve this? Ed...
The source code for the PHP interpreter is absolutely mystifying to me. The thing is, I'd like to learn more about it, so I can avoid making Schlemiel-style mistakes. This is a huge project, some nearly sixty megs in size. How do I go about reading it? Is there an article or a book out there somewhere to help me begin to make some se...
Looking for the gory details on extensibility, ISAPI, HTTP.sys, ... ...
I've been using spring for some time, but I always wondered how does it work, more specifically, how do they load and weave beans/classes marked only with an interface or @annotation. For the xml declarations, it's easy to see how spring preprocesses my beans (they are declared in the xml context that spring reads), but for the classes...
I have a port scanning application that uses work queues and threads, it uses simple TCP connections and spends a lot of time waiting for packets to come back (up to half a second). Thus the threads don't need to fully execute (i.e. first half sends a packet, context switch, does stuff, comes back to thread which has network data waiting...
I couldn't find a documented API that yields this information. A friend suggested I use NtQuerySystemInformation. After looking it up, the information is there (see SYSTEM_THREAD ) but it is undocumented, and not very elegant - I get the information for all threads in the system. Do you know of a more elegant, preferably documented API...
I'm looking for books / articles / papers on Javascript engine internals along the lines of the many reference works about the JVM internals, CLR internals, etc. I could (and likely will) look at the source code for JavaScriptCore and V8/Chromium, but if there's a book out there or some other "guided tour" documentation, I'd prefer to r...
Hi guys..... why this is happen ? When u create abstract class in c++ Ex: Class A (which has a pure virtual function) after that class B is inherited from class A And if class A has constructor called A() suppose i created an Object of class B then the compiler initializes the base class first i.e.class A and then initialize the ...
GAE has various limitations, one of which is size of biggest allocatable block of memory amounting to 1Mb (now 10 times more, but that doesn't change the question). The limitation means that one cannot put more then some number of items in list() as CPython would try to allocate contiguous memory block for element pointers. Having huge l...
What is the purpose of the csrss.exe (Client/Server Runtime Server Subsystem) on Windows? Maybe someone could give a good explanation or pointers to documentation? Unfortunately Google results are pretty noisy when searching a core process of Windows. The reason I'm asking is that I got a BSOD from my service application which seems t...
By Using reflector you can see that WPF UserControl is overriding AdjustBranchSource. internal override void AdjustBranchSource(RoutedEventArgs e) { e.Source = this; } My very own problem regards inconsistency caused by that issue. When an element is based inside a user control or outside. The Source parameter behaves differ...
For example, a process waiting for disk I/O to complete will sleep on the address of the buffer header corresponding to the data being transferred. When the interrupt routine for the disk driver notes that the transfer is complete, it calls wakeup on the buffer header. The interrupt uses the kernel stack for whate...
So lets say that you want to learn some stuff about database internals. What's the best source code to look at? the best books to buy? I was talking about this with a buddy the other day and he recommended: Art of Computer Programming, Volume 3: Sorting and Searching What other books would help me learn about all the File IO and memory...
Hello guys, I'm trying to make a application that allows remote access to other applications (running on different machines). The idea is to make give users transparent accesso to certain applications, I've basically two options: Application Streaming Intercepting draw command and reproduce them in the client (of course, the input i...
I wonder how weak references work internally, for example in .NET or in Java. My two general ideas are: "Intrusive" - to add list of weak references to the most top class (object class). Then, when an object is destroyed, all the weak references can be iterated and set to null. "Non-intrusive" - to maintain a hashtable of objects' poin...
Does anyone know how the databinding system works in silverlight technically, I have seen alot of the tuts on databinding and that items must be bound to a Dependancy Object ( and dependants ) using dependancy properties but where are the properties actually managed? what classes should I look at in reflector to understand the internals?...
I'm making some pretty string-manipulation-intensive code in C#.NET and got curious about some Joel Spolsky articles I remembered reading a while back: http://www.joelonsoftware.com/articles/fog0000000319.html http://www.joelonsoftware.com/articles/Unicode.html So, how does .NET do it? Two bytes per char? There ARE some Unicode chars^H...