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Variables

   Easy Is Variant slower then other types?

   Medium What does it mean to pass by reference?

   Medium How should I format dates so that they look correct in all date and langauge formats?

   Medium How can I get a pointer to a string, object, or variable?

Is Variant slower then other types?

Compatibility:VB3 VB4 VB5

Yes. VB must determine the type of the variable for every access.

What does it mean to pass by reference?

Compatibility:VB3 VB4 VB5

When you pass by reference, you get the actual variable. (You pass by reference by default.)

In contrast, when passing by value, you get a copy of the variable.

The net effect is passing by value prevents you from changing the variable

How should I format dates so that they look correct in all date and langauge formats?

Compatibility:VB3 VB4 VB5

Instead of defining your own format, like this:

myStr = format$(myDate, "mm:dd:yy")

use the predefined types, like this:

myStr = format$(myDate, "Short Date")

How can I get a pointer to a string, object, or variable?

Compatibility:VB3 VB4 VB5

For strings, use the undocumented function StrPtr. If you need a pointer to a object, use ObjPtr. Finally, if you need a pointer to a variable use VarPtr.

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