Re: [Gretl-devel] default values for matrices?

Isn't this more a question of scope? If the pointer from is mandatory, then the variable is forced to have a larger scope then perhaps the script writer intends? Not that a poiter doesn't have advantages, but why should the compiler force a larger scope? That seems in conflict with the argument against global variables. Sent from Outlook Mobile<https://aka.ms/blhgte> On Sat, Dec 19, 2015 at 7:21 AM -0800, "Sven Schreiber" <svetosch@gmx.net<mailto:svetosch@gmx.net>> wrote: Am 18.12.2015 um 21:59 schrieb Allin Cottrell: While personally I'm not much concerned with a default matrix, I would like to use this discussion to ask about the necessity of the pointer form for marking the argument optional. And it may well be that it has been discussed before. To be concrete, why would it be problematic to have something like this: <hansl-not-correct-right-now> function void example(matrix m[null]) if !isnull(m) print m endif end function example(I(3)) </hansl-not-correct-right-now> Changing the function signature to "matrix *m[null]" is easy enough, but then of course you need an extra line before the call: marg = I(3) example(&marg) Basically it's this extra and kind of unnecessary line that is bothering me (and Oleh I guess) because it "contaminates" the script. thanks, sven _______________________________________________ Gretl-devel mailing list Gretl-devel(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-devel