[Jprogramming] index origin 0

Sat Jul 24 21:30:15 HKT 2010

I used APL and also at least one flavor of BASIC that had index origin
control. I have no problem with J fixing index origin at 0.
Tom Arneson
-----Original Message-----
From: programming-bounces at jsoftware.com
[mailto:programming-bounces at jsoftware.com] On Behalf Of Roger Hui
Sent: Saturday, July 24, 2010 08:17
To: Programming forum
Subject: [Jprogramming] index origin 0
I have been asked by some APL colleagues about 
index origin 0 in J. The question is, does the choice
of a fixed value of 0 for index origin a hindrance to
your work? The question is specifically addressed
to "ordinary domain experts", people with no
software engineering in their background and are not
professional mathematicians. 
In case you did not know, in APL there is a choice
known as the index origin, controlled by the variable 
quad-io, of counting from 1 instead of from 0, affecting 
the left argument of { and the result of i. , among other things. 
I will say no more than this to avoid biasing your answers.
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