About code. Mostly on C++
NuGet has recently added support for native projects. This simplifies a lot deployment of native libraries. Even though cpplinq is not a big library (in fact is just a header file) I have created a NuGet package so that you are able to automatically add it to your project. Here is what you have to … Read more
I was writing recently about an MFC bug in CDatabase class in Visual Studio 2012. In the meanwhile I have stumbled upon an even greater bug (check this report on Connect for the details): when the OpenEx function fails (wrong credentials, service not reachable, machine is shot down etc.) it corrupts memory. What happen next … Read more
Problem I have recently migrated a C# 2.0 project registered for COM interop to .NET 4.5 and when I imported the type library in a C++ project with no_registry, suddenly I got some errors because the type library could not be imported. Here are the steps to reproduce: create a .NET Class Library project and … Read more
After migrating an MFC application from Visual Studio 2008 to Visual Studio 2012 I run into an unexpected error: the application was having problem fetching data from the SQL Server database. After debugging it turned out that function CDatabase::GetConnect that I was using to retrieve the connection string after opening the database (for different purposes) … Read more
A recent question on stackoverflow raised the problem of a fast algorithm to count the unique colors in an image (Faster algorithm to check the colors in a image). My answer what that this kind of problems are suited for parallelization. However, parallelization may only help when used judiciously. To demonstrate the point I have … Read more
There are some new operators available in cpplinq: singleton, generate, pairwise and zip_with. singleton This operator create a range with a single element, specified as argument. Using the operator is straight forward. auto result = singleton (42) >> to_vector (); // yields {42} generate This operator creates a range using a given predicate. auto x … Read more
In the previous posts I introduced cpplinq, a C++ template library that provides .NET-like query operators for sequences of objects in C++11. In this third installment I will discuss the set operators the library provides. There are four set operators: distinct, union_with (called so because union is a keyword in C++), intersect_with (suffix _with is … Read more
In my previous post I introduced cpplinq, a C++ template library that provides .NET-like query operators for sequences of objects in C++11. In this second installment I will discuss about two things: range generators and range conversion operators. These two sets of operators are ubiquitous in queries. Range generators A range generator builds an object … Read more
cpplinq is a C++ template library that provides .NET-like query operators for sequences of objects in C++11. cpplinq is an open-source library that works both with VC++ compilers (2010 and 2012) and gcc (4.7.0 is the version used for unit tests). The library supports most of the .NET query operators and is extendable with additional … Read more
It is possible to host WPF controls in a Win32 application, and the other way around, but because of the differences betweeb these technologies there are various issues that can appear. One of these is handling of keyboard input. Without diving too much into differences between WPF and Win32, I will show how to provide … Read more