It seems worth noting that the side-effect involved in
this challenge is not a side-effect in the sense of
language theory; it only exists in implementation
details that have no formal status in the language.
(I suspect most everybody here understands that, but
who knows when this thread will be perused by those
who are in the earliest phases of learning J?)
I'll be interested to learn whether anything of a
practical nature can be learned from this exercise.
My personal bias is that the only things that matter
are the formal definition, departures of an
implementation from the definition, and ambiguities in
the definition. What we're looking at hear, "under
the hood", seems to involve none of these.
Tracy
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