I would basically do what you do, except that I'd create the list of indices first, and then rearrange the target array:

my @foo = (1..8);

my @indices = map { $_*2 +1 => $_*2 } 0..(@foo / 2)-1;
@bar = @foo[ @indices ];

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In reply to Re: Switch the odd/even elements of an array by Corion
in thread Switch the odd/even elements of an array by jaredor

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