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Unless explicitly declared static, an ordinary function is implicitly declared extern in C and C++. For example: extern void func(int i); // extern is redundant However, sometimes the extern qualifier

The following code has a subtle bug. Can you detect it? DWORD ErrCode = GetLastError(); // Retrieve the error codeif (!ErrCode==ERROR_FILE_NOT_FOUND) // warning on this line Although the compiler cannot

Normally, you don’t need to implement operator == for comparing string objects, as it’s already defined for you. However, for certain applications, you might need to provide a different version

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The following code allows you to move a form by clicking anywhere on the formand dragging it: Option Explicit’define module level variables to store the last position of the form,

Counting the number of object instances of a certain class can be necessary in debugging and performance tuning. To do that, declare a static data member as a counter, and

The following will replace all single quotes in a SQL statement [CHR(39)] with anapostrophe [CHR(180)]. This is useful if you are trying to add names to adatabase as parameter values

The standard function template std::numeric_limits (defined in < limits >) returns the implementation-dependent number of digits that a certain type has: #include int main(){std::numeric_limits < float >::digits10; //6 on my

If you work with SQL Server or Oracle you at some point probably will need todetermine your unique connection identifier. For SQL Server, the connectionidentifier is called a Server Process

When granting permissions through roles, it is important to know that rolesare disabled while packages are compiled. For example, consider two schemas: User_A and User_B. Let’s create Role_A: CREATE ROLE

Question: I want to validate a form so that three radio buttons may be checked, but no more. This will be used in a “what are your top three choices”

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