Re: [Gretl-devel] new defbundle() function
On Sat, 29 Apr 2017, Sven Schreiber wrote:
Am 29.04.2017 um 15:23 schrieb Allin Cottrell:
> Well, right now ',' is the unique, definitive argument separator.
> Implementing either of the above would mean defining a new internal type,
> namely an "argument-pair", plus a new operator, "pair-joiner".
>
> Also, since every printable, non-alphanumeric ASCII symbol is already in
> use as an operator of some kind in hansl, there would be a potential
> collision problem. Too expensive, I think.
OK, fair enough. I guess for visual structuring one could simply use
whitespace, as in:
bundle b = defbundle("eins",1, "zwei",2)
Or vertical whitespace if you prefer:
bundle b = defbundle("eins", 1,
"zwei", 2)
BTW a follow-up question: Would defbundle(eins,1) also be legal? I
mean in
the same way that both b.eins and b["eins"] are legal expressions for the
bundle memmber "eins"?
As things stand, in the case of "defbundle(eins,1)" gretl will be
looking for a string variable named "eins" to supply the key and
will fail if there's no such variable: "The symbol 'eins' is
undefined."
Allin