[Jprogramming] index origin 0

R.E. Boss r.e.boss at planet.nl
Sun Jul 25 03:24:46 HKT 2010


The main reason I would prefer an index origin of 1 is because I expect the
first, second, third, ... element to have index 1, 2, 3, ...
Just like the last, second to last, third to last, ... have index _1, _2,
_3, ...
I am (educated as) a mathematician.
http://www.xkcd.com/163/
R.E. Boss
> -----Oorspronkelijk bericht-----
> Van: programming-bounces at jsoftware.com [mailto:programming-
> bounces at jsoftware.com] Namens Roger Hui
> Verzonden: zaterdag 24 juli 2010 15:17
> Aan: Programming forum
> Onderwerp: [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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