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Postings from September 2000
Karl Glazebrook wrote:
> Ilya Zakharevich wrote:
> > You are trading a frequently used shortcut @a == 1 + $#a for a
> > rarely-used-but-beautiful/intuitive semantic. I'm not sure it is a win.
>
> It's now boiling down to a matter of opinion and we'll have to agree to
> differ. Of course I use array arithmetic all the time as a heavy PDL
> user.
>
It's not just for number-crunchers either. Array notation greatly simplifies
many frequently used operations. For instance (from RFC 82):
<quote>
@people = ('adam', 'eve ', 'bob ');
@scores = (7,9,5); # Score for each person
@histogram = '#' x @scores; # Returns ('xxxxxxx','xxxxxxxxx','xxxxx')
print join("\n", @people . ' ' . @histogram);
adam xxxxxxx
eve xxxxxxxxx
bob xxxxx
</quote>
Array notation is not 'rarely used' in languages that support it--in fact,
operations are applied to arrays and lists at least as often as scalars in
most code I see written for Mathematica, J, PDL, and so forth.
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