[Gretl-users] vertical matrix concatenation (was matrix declaration error)

Allin Cottrell cottrell at wfu.edu
Tue Jan 30 17:41:30 EST 2007

On Tue, 30 Jan 2007, Riccardo (Jack) Lucchetti wrote:

> On Tue, January 30, 2007 23:11, Allin Cottrell wrote:
>> That does make sense, but I'm a bit reluctant to change the
>> meaning of logical "&" and "|" right now -- though we could do
>> that later with fair warning.
> What we could do is: introduce now "&&" and "||" as synonyms of "&" and
> "|" but issue a warning everytime the 1-char versions are found,
> notifying users that they are deprecated (big red letters, fire alarm,
> buzzers, flashing lights, whatever). In a year's time or so, introduce
> "|".

Yes, I think that's a good idea.  Meanwhile, do we want a 
temporary symbol for vertical concatenation, or just forget it for 


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