AW: [fpc-pascal]how to assign a value to an untyped variable
Michael Van Canneyt
michael.vancanneyt at wisa.be
Fri Jul 11 15:27:09 CEST 2003
On Fri, 11 Jul 2003, ZINTEL Gerhard wrote:
> > Hello all,
> > Friday, July 11, 2003, 3:18:58 PM, you wrote:
> > ZG> hello list members,
> > ...
> > ZG> which type to be used for a type cast (that is not
> > allowed for the left
> > ZG> side) or how to use an address operator to manage it?
> > at least in my fpc 1.0.6 typecasts for the left side are allowed,
> > value := r; // error
> > real(value) := r; // works ! ;-)
> In the (at least my) reference guide in chapter "6.4 Value typecasts"
> (version 1.8) there is written:
> "Value typecasts cannot be used on the left side of assignments, as variable
> doesn't it mean that the above is not allowed or do I miss something?
It means you cannot do
as opposed to
Which means essentially that a typecast of a constant is still a constant,
and cannot be assigned to. (same goes for expressions)
You can of course do
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