static variables - Different files - Redefinition error?

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ASKER

Darn, I think in VB.net it's purely file-based.

So, would you happen to know if It'd be possible for me to do what I want to do ?

Same variable names, different files, same compilation unit, static ?

Thanks

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ASKER

I'm a little confused about your previous comment Infinity, could you please elaborate some?

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dennis_george

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dennis_george

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e_tadeu

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ASKER

Dennis and Infinity - Yes, that makes perfect sense. Thank you very much.

e_tadeu - I'm not entirely clear about your prevoius comment.

By externing V1 and V2 in two different headers, this accomplishes something but I'm still not understanding it.

Thanks for your time!

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e_tadeu

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ASKER

Ahh.. I miscommunicated.

I'd like to have a unique V1 and V2 usable inside different files. (one being a header, and the other being a file that includes the header).

It's not a big deal, I just figured there was an easy way to do it.

Now that I know more about compilation units, I'll code accordingly =)

And just to make sure you understand this completely : you can't treat a header as a compilation unit, as it will never be compiled. It will be included in one or more compilation units that will contain everything the header specifies.

So, if you want two different compilation units, each having their own set of V1,V2 variables, you do this :

---- file1.cpp ----
// ...
static int V1;
static int V2;
// ...
---- ----

---- file2.cpp ----
// ...
static int V1;
static int V2;
// ...
---- ----

If you want the V1,V2 from compilation unit "file1" to be used in "file2", then do this :

---- file1.cpp ----
// ...
static int V1;
static int V2;
// ...
---- ----

---- file1.h ----
// ...
extern int V1;
extern int V2;
// ...
---- ----

---- file2.cpp ----
// ...
#include "file1.h"
// ...
---- ----

Of course you can play around with header files, as long as you realise that they only get included in a cpp file, and never get compiled themselves !

ASKER

Thanks for the extra information Infinity, I appreciate your help