RE: Possible feature for new Euphoria-version

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Robert Craig wrote:
> 
> 
> Tommy Carlier wrote:
> > sequence seq
> > seq = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}
> > sequence b
> > b = {2, 2}
> > integer a
> > a = seq[b]
> > 
> > This way you can also pass and return multiple indices to and from 
> > procedures and functions.
> 
> There are at least three logical ways that you might define
> subscripting of a sequence with a sequence.
> 
> 1. Your way (above). The sequence used as a subscript would
>     contain a series of subscripts to be applied. This
>     fills a logical gap in subscripting, since currently
>     the number of levels of subscripting is fixed at
>     compile-time. You could use this for reading and writing.
> 
> 2. sequence s
>     s = {100, 200, 300, 400, 500}
>     s[{1,5,3}] is {100, 500, 300}
>     The subscript would let you randomly select a bunch of
>     elements for reading or writing.
> 
> 3. sequence s
>     s[1] = 7
>     s["Tommy"] = 99
>     s["Carlier"] = 0
>     s["Carlier"] += 1
>     ? s["Tommy"] * s["Carlier"]
> 
>     The Euphoria implementer might set up a hash table internally.
>     Whenever you assigned to a previously nonexistent
>     element, the implementation would create a new
>     element for you. This would be good for symbol tables,
>     databases etc.
> 
> Which approach is best? If you choose one, you'll
> eliminate the possibility of doing the others.
> 
> Regards,
>     Rob Craig
>     Rapid Deployment Software
>     http://www.RapidEuphoria.com
> 
> 

My preference is number 2.  But my vote shouldn't count as much as the 
other's votes because I'm not an experienced programmer.

I'd like:

sequence a, b
a = {1,2,3,4,5}
b = a[2,1,3..5,1] -- b now equals {2,1,{3,4,5},1}

Just my input,
Phil

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