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Re: Python tricks

by thechartist (Monk)
on Mar 04, 2019 at 21:49 UTC ( #1230873=note: print w/replies, xml ) Need Help??


in reply to Python tricks

The matrix transposition can be done as a one-liner if you use PDL:

Done on Strawberry Perl 5.26.1 perl -MPDL -e "$seq = sequence(3,2)+1; print transpose( $seq );"
Edit: even better is:
perl -MPDL -e "print transpose(sequence(3,2)+1);"
The nested function calls appeal to my Lispy side; but in Perl, it is often easier for me to assign something to a variable, then pass that variable to a function/subroutine. My matrix algebra is very rusty, but I suppose some of the other matrix problems have 1 line solutions using PDL. I will come back to this.

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Re^2: Python tricks
by etj (Chaplain) on May 02, 2022 at 17:22 UTC
    I would highly recommend PDL::LinearAlgebra which has had a medium-sized update recently to get all the wrappers for the underlying LAPACK routines to work with "native complex" data. It turns perldl into a rather more MATLAB/Octave-like matrix tool.

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