Question: Using a single datawindow, can I access data from multiple databases (Oracle and Sybase)? If not, can I use PowerBuilder to access it without having any intermediate table? Answer:
STL’s unique() algorithm eliminates all but the first element from every consecutive group of equal elements in a sequence of elements. unique() takes two forward iterators, the first of which
A bit field can be signed or unsigned. According to the C++ standard, a signed bit field may be represented in one of three ways: two’s complement one’s complement sign
Although usually I don’t recommend using macros in C++ code, there are a few exceptions. One such exception is when you want to create a truly immutable constant. Consider the
If you happen to define an object or a function or a constant whose name collides with a macro located elsewhere in a third-party header file, as in: // file
Open source products come with their source code files. Although you can usually install a ready-made executable file, you want to take advantage of the available source code files and
Many modern operating systems support Symmetric Multiprocessing (SMP)?a hardware architecture that uses two or more processors on one machine and enables you to achieve true multitasking. On SMP architectures, multithreaded
The members of an enumerated type are called enumerators. For example: enum Direction { Up, // an enumerator Down // another enumerator }; int main() {} An enumerator’s scope is
I receive many questions from readers asking for guidance on how to port an existing C++ app to a different compiler or platform. Porting software can be very easy or