http://qs1969.pair.com?node_id=474770


in reply to Re: Transposer
in thread Transposer

Well, it's not a matrix which is input, but it is a matrix that is output. input is a list of strings, with each string defining a tuple, whereas output is a LoL. Anyway, thanks for the code.

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Re^3: Transposer
by jdporter (Paladin) on Jul 14, 2005 at 14:31 UTC
    Yeah... but as already discussed, the part that converts those strings into actual arrays should probably be separated from the other part. But hey - if they must be integral, then here: 
    # first arg: n
# second arg: array(ref) of strings which are comma-separated lists.
# return: list of nth elements.
sub nth_elemS
{
    map { (split ',')[$_[0]] } @{$_[1]}
}

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