October 12, 2002

IF statements can become quite long when you’re testing for multiple values. Using the IN expression can make them more readable.So, instead of typing: IF (@testvar = 1 or @testvar

Always use an enum instead of defines and always close the list with an additional count. This makes life simpler and helps the compiler.Instead of defines: #define TypeA 0#define TypeB

All you need is a simple class that asks your object for each known interface. Here’s the class QI: #include #include #include class QI : public std::stringstream, protected CRegKey{protected: virtual

Suppose you need to make multiple inserts (or updates or deletes) to a SQL Server database?for instance, inserting items in a shopping cart. In the past, you needed to loop

Instead of writing a string class that contains a (char *), why not write a string class with a fixed char array? Of course, it would be repetitive if you

Consider this code: class CA{//…};class CB{//…};CA * CB2CA(CB *pb){ return dynamic_cast(pb);} The CA and CB are totally unrelated classes and the CB2CA function seems to be completely useless. However, what

A sparse array saves memory by not allocating memory for elements that are not initialized or to which you don’t need access. They’re quite easy using the STL map.This example

Use the following code: #include void main(){ char name[15]; double salary; ofstream outFile(“FileName.txt”, ios::in); while (outFile){ outFile >> name >> salary; }}