Thanks for your solution. It's pretty much what I was looking for. :-)

But.. are you sure if that code works for any input data one could think of? Couldn't the

$after->[$lo_1 + 1]

[download]

result in an undefined value when $lo_1 equals $#{$after}?

Cheers, Flo

In reply to Re^2: Difference between two arrays by rafl
in thread Difference between two arrays by rafl

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