Q: Complex Magma Indexed queries - draft syntax

[Chris Muller]

> I have no idea on performance, but could each clause
> not modify a bitmap index appropraitely ?

I have a ~ half-million element MaHashIndex.  Tests if
the range is 10000:

| n |
n _ 0.
Time millisecondsToRun: [ self entriesFromIndex: 1 do:
[ : x :y : z ] until: [ : a : b : c | (n_n+1) > 10000
] ] 

"9841"

If the range is 100000:

| n |
n _ 0.
Time millisecondsToRun: [ self entriesFromIndex: 1 do:
[ : x :y : z ] until: [ : a : b : c | (n_n+1) > 100000
] ] 

"97408"

So it looks like about 1000 per second, too slow.  :(

Is there any way to avoid having to enumerate the
entire ranges?