On Sat, 28 Nov 2009 14:58:26 +0100 Jürgen Hestermann <juergen.hesterm...@gmx.de> wrote:
> > is it possible to set a variable in a programm as a readonly variable? > > Not that I am aware of. But for what reason do you want such a behaviour? > > And if I think it over, this can only work at runtime (letting the program > crash on the second assignment). At compile time the compiler may not exactly > know which assignment is done in what order. If you set the variable in a > procedure or function the compiler would have to check when this procedure is > called (which can be called by another procedure and so on). The first call > (and assignment) would be ok but the second should generate an error? How > should the compiler know how often the routine is called? This can even be > dependend on input data. Same under bash. Use the following: property MyVar: integer read FMyVar write SetMyVar; And in SetMyVar you can set flag and raise an exception if set for the second time. Mattias _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
