Tip Bank

Question: Can you to tell me how to use a variable in other VB projects; i.e.,how to use some variable in two EXE-compiled VB projects? Answer: Because of the way

Question: I am collecting a number of function pointers in C++ and before I call them I want to check to see if they have been set. I really want

Question: Could you please explain what the significance of string::npos is in the statement? someString.find_first_not_of(“0123456789”)==string::npos Answer: string::npos is a constant integer that holds the maximum value of characters that a

Both C and C++ allow you to return by value aggregates, e.g., structs and unions, from a function. However, the runtime overhead of returning large objects by value can be

In many applications, you need a generic class that invokes callback functions regardless of their class type. For example, an even-driven system that needs to call a member function of

Here’s a common error: you define a class-internal type, say an enum or typedef, and then try to use it as the return type of that class’s member function: class

The standard functions isalpha(), isdigit(), isprint() etc., defined in the standard header or often fail to produce the right results because they assume that their arguments are of type ‘unsigned

The .* and ->* operators enable you to call a member function without having to know the function’s name. Remember, however, that when using these operators, you have to parenthesize

This is a useful tip if you are using SQL Server as your database and Accessas your front-end application. Use the following code to dynamically change theAccess passthrough query definition,