[fpc-pascal] constant records as default parameters
dle3ab at angelbase.com
Thu Dec 30 20:40:33 CET 2010
I'd like to use a constant record as a default parameter. Is there some way to
do this? Here's my use case:
lt_ints = record
left, top : longint;
lt_zero : lt_ints = (left:0; top:0);
procedure do_something (const offset_lt : lt_ints = lt_zero);
The procedure declaration gives an error ("illegal expression").
I assume the trouble is that lt_zero cannot be used as a default parameter
value, because it is not truly a constant: it is an initialized variable.
Perhaps my real question is: how do I make a constant record which is truly
constant, rather than an initialized variable?
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