in reply to Column slice of a 2D array

Is there a shorthand way to get a "column" slice of a 2D array?

Not really, but map maybe makes it a little clearer:

@a = ([2,4],[4,5],[8,6],[10,7]);; print map $_->[1], @a;; 4 5 6 7

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.