Diff between Mid and Mid$, Instr and Instr$ ?

[dtqui]

Hi,

I would like to know what is the difference between Mid and Mid$ in VB5? The help in VB5 only talks about the Mid. What's with all the dollar sign in Instr$, Left$, Right$ etc..

If I only use all the functions without dollar sign, would I face problems when I migrate my software from VB5 to VB6?

Thanks.

 

[hardkor1001110]

its just old syntax -- you had to use the $ in GW and QuickBASIC.

 

[dpaulson]

Use of the $ will result in a string type variable, without it, it will return a variant type. Use of the $ will result in quicker calculations and less memory usage.
David Paulson

 

[jmarler]

dpaulson is correct. Function without the $ will return a variant data type and placing the $ on the command will force the function to return a string data type. Forcing the function to use a string rather than a variant will cause the command to run 5-7 times faster.
- Jeff Marler B-)

 

[dtqui]

Thks for the replies. Now I know better. :-s

 

[JohnYingling]

It makes a difference in VB6 CPU time although I don't see the $ mentioned in the DOC. Use Left$, Right$, Mid$, Ucase$, Lcase$, Trim$, Ltrim$, Rtrim$, Join$ and Replace$.

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