Unlike ordinary member functions, a virtual destructor is not overridden when redefined in a derived class. Rather, it is extended: the lower-most destructor first invokes the destructor of its base
A template definition can be #included in several translation units (source files). However, each time it is #included the definition is recompiled. Using large template definitions can increase compilation time
In some rare cases, it is useful to disallow further derivation of a class. Classes that implement system API or sensitive security management are good examples for that. Declaring the
C++ defines a hierarchy of standard exceptions that are thrown at run time when abnormal conditions arise, such as when operator new fails. The standard exception classes are derived from
The preprocessor #include directive appears in two flavors: #include < vector > // angular brackets and #include “myclass.h” // quotes The two are not interchangeable. The angular-bracket version applies to
I use this routine in almost every application I develop. It’s handy whether you need a key for a collection or whether you use it in a database: Option ExplicitPrivate
This “wait” routine suspends your code and waits for the shelled process to finish. It comes in handy when you need to run another scriptatch file during your process. Use
Use this code to fill a list box with the values from a database table. The first field in the query provides the ItemData for the list: Call FillList(dbase, “select
If you write programs that access information on a network server, you never want to hard-code drive letters. Not all software vendors take advantage of the Uniform Naming Convention (UNC)