The build system was dramatically overhauled in VS2010, it now uses MSBuild instead of the custom VCBuild system. The same build system used by other languages supported by VS. They did a pretty good job of making that invisible, old projects normally build just fine. But there are a few places where you can get … Read more
I had a similar problem with linker warning LNK4042: object specified more than once; extras ignored. In my case Visual Studio was trying to compile both header and source files with the same name – MyClass.h and MyClass.cpp. It happened because I renamed .cpp file to .h and Visual Studio got confused. I noticed the … Read more
A switch is often compiled to a jump-table (one comparison to find out which code to run), or if that is not possible, the compiler may still reorder the comparisons, so as to perform a binary search among the values (log N comparisons). An if-else chain is a linear search (although, I suppose, if all … Read more
By default UNICODE is defined in Visual Studio 2010. Either call MessageBoxA instead of using the MessageBox define or pass a wide string literal (L“First Win32 Program” and L“Window Title”) or, if you really care about being able to build without UNICODE defined, use the _T macro around your string literals: _T(“First Win32 Program”) (this … Read more
The extra braces are needed because std::array is an aggregate and POD, unlike other containers in the standard library. std::array doesn’t have a user-defined constructor. Its first data member is an array of size N (which you pass as a template argument), and this member is directly initialized with an initializer. The extra braces are … Read more