[fpc-devel] How to convert set to integer and vice versa

thaddy at thaddy.com thaddy at thaddy.com
Tue Jul 22 12:48:43 CEST 2014

You will find that if you are converting from a Delphi version equal to 
or before Delhi 2009, the {$Mode Delphi} or -Mdelphi directive does 
exactly what you want.

On 22-7-2014 3:37, Gennady Agranov wrote:
> Hi,
> I am new to FPC, but I do like it - thanks!
> We are trying to switch from Delphi to FPC, but I am stuck with the 
> following issue - in Delphi you can cast "set" to "integer" and get it 
> back later - again by casting. In our case it is used for persistence 
> purposes.
> We have a lot of different set types - i really do not want to write 
> set<->integer converter for every set type we have :(
> Actually I did find a way - I use ^ and @ and cast pointers,
> but is there a way to write general set<->integer converter in FPC 
> that I do not have to worry whether it will work or not?
> And what actually -CPPACKSET=0 does - documentation is not clear - at 
> least for me :)
> Thanks,
> Gennady
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