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sparse array calculation in PDL

by ptizoom (Sexton)
on Nov 15, 2012 at 08:00 UTC ( #1003951=perlquestion: print w/replies, xml ) Need Help??
ptizoom has asked for the wisdom of the Perl Monks concerning the following question:

Hi, I was wondering if there is an activity on time and space efficient calculation of non rectangular arrays in Perl (data language)?

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Re: sparse array calculation in PDL
by ptizoom (Sexton) on Nov 15, 2012 at 08:18 UTC
    Ooooh, I have just seen: http://search.cpan.org/~kwilliams/PDL-Sparse-0.01/, http://search.cpan.org/~moocow/PDL-CCS-1.17/ this shall auto-answer my question.

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Node Type: perlquestion [id://1003951]
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[reisinge]: 'push @foo, @bar' is the same as '@foo = (@foo ,@bar)' ?
[shmem]: yes, at least for the result in @foo
[shmem]: but the results of both operations are different.
[shmem]: result := the discarded result (what's leftmost of the statement)

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