[erlang-questions] Re: Matrix rotator

John Haugeland <>
Mon Jun 15 09:30:17 CEST 2009


>> Doing something like this is both easier and much faster on tuples, at
>> which point Mr. Billquist's strategy of construction through item
>> lookup becomes the preferred method (in lists, the cost of iterating
>> each list for each item is prohibitive.)
>
> I did say it was a trivial implementation, not an efficient one. :-)

I apologize; I had not meant that to be critical, though in retrospect
I can see that it appears that way.  Such was not my intent.  What I
was trying (and failing) to do was to point out an unspoken
understanding which you clearly have, but which many novices will not.

I had meant you no disrespect.  I only meant to highlight a concern
which I suspected third parties with little experience might be
unaware of.  There are many people on this list who are new to
software engineering, and I cannot count the number of times I've seen
novices on IRC be shocked that things like that aren't free.

I'll look for a different way to raise for attention things like that
in the future.  Again, my apologies if you felt I was criticizing you.


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