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From: rfinch@caldwr.water.ca.gov (Ralph Finch)
Newsgroups: comp.lang.idl-pvwave
Subject: Curious array behaviour?
Message-ID: <275@locke.water.ca.gov>
Date: 15 Mar 91 18:13:48 GMT
Organization: Calif. Depart. of Water Resources, Sac.
Lines: 18


PV-Wave 3.02 on a Sun 4.

Array operations are quite powerful in idl-wave and so different from
other languages that I think I still don't fully understand them.
Here is something that has me puzzled:

a=[1,2,3,4,5]
print,a([-1])
  -> 1
print,a(-1)
  -> ERROR

Why the difference?
-- 
Ralph Finch			916-445-0088
rfinch@water.ca.gov		...ucbvax!ucdavis!caldwr!rfinch
Any opinions expressed are my own; they do not represent the DWR