HaloO, [EMAIL PROTECTED] wrote:
+Alternately, C<*+0> is the first element, and the subscript dwims +from the front or back depending on the sign. That would be more +symmetrical, but makes the idea of C<*> in a subscript a little more +distant from the notion of "all the keys", which would be a loss, +and potentially makes C<+*> not mean the number of keys.
The distinction of the three cases would be through dispatch to different functions. The plain * goes to &postcircumfix<[ ]>:(Array,Whatever) while the other two go to &infix:<+>(Whatever,Int) and &infix:<->:(Whatever,Int) respectively. In the latter cases the Whatever type somehow must package the array. Perhaps it is actually Whatever of Array or somesuch. The return value is a normal Int suitable for indexing the array. Perhaps we need to restrict the second parameter to UInt unless these two operators wrap around depending on sign ;) That is @array[*+(-1)] actually retrieves that last entry and @array[*-(-1)] the first =:() Can the index be set up before using it in an array index? my @a = 1,2,3; my $x = *-1; say @a[$x]; # prints 3 Would &infix:<-> return a lazy Whatever value that becomes a specific index when it hits &postcircumfix<[ ]>? That is we have something like Whatever arithmetic? Regards, TSa. --
