Re: [Gretl-devel] spurious (IMO) type mismatch
On Tue, 10 Nov 2015, Sven Schreiber wrote:
Hi,
see this:
<hansl>
open denmark
list lolo = LRY
list lulu = (1==1) ? LRY : LRM
</hansl>
The last line gives an error, and I guess it's because of assigning
a series to a list. (Which however in principle works, see the
second line.)
This is tricky. In the first case the object being assigned to a list
is a named series from the dataset, which is OK. In the second case
it's the series product of a calculation, and in general that's not
acceptable; for example you cannot say
list L = x/3
where x is an existing series. Now a human observer can see that in
your case above the "calculation" happens to be transparent and just
passes through one or other of two named series. I'll have to think if
there's a way for gretl to recognize that without breaking other
things. Consider this superficially similar-looking example:
list lulu = (z==1) ? LRY : LRM
where z is a series. Here the calculation is _not_ transparent and
there is a genuine type mismatch: trying to add an anonymous,
on-the-fly series to a list.
Allin