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Allow me to quote from the Delphi help file:
For a variable parameter, the actual argument must be of the exact type
of the formal parameter.
procedure SwapBytes(var B1, B2: Byte);
var
Temp: Byte;
begin
Temp := B1; B1 := B2; B2 := Temp;
end;
var
C1, C2: 0..255; (*Similar to a byte, but NOT identical*)
begin
SwapBytes(C1,C2); (*<-- Error message here*)
end.
Arguments C1 and C2 are not acceptable to SwapBytes, *although they have
the exact memory representation and range that a Byte has*. [Emphasis
mine.]
Oh, and for the case where I specifically ran into this, typecasting won't
help. Apparently when you typecast a variable, the result looks like a
constant to the compiler so you can't pass it as a variable parameter
(pass by reference).
--
...computer contrarian of the first order... / http://aperiodic.net/phil/
PGP: 026A27F2 print: D200 5BDB FC4B B24A 9248 9F7A 4322 2D22 026A 27F2
--- --
> This made me wonder, suddenly: can telnet be written in perl?
Of course it can be written in Perl. Now if you'd said nroff,
that would be more challenging...
-- Larry Wall
---- --- --
Generated at 18:01 on 30 Aug 2006 by mariachi 0.52