I've done some searches on permutations and combinations, but haven't quite found what I'm looking for.

Given the following:

my $params = [ 1, [ 2, 3, 4 ], 5, [ 6, 7, 8 ], 9 ];

I want arrays holding all the different combinations, in order of placement in the original params arrayref... e.g.
$output = [ 
[ 1, 2, 5, 6, 9 ],
[ 1, 3, 5, 6, 9 ],
[ 1, 4, 5, 6, 9 ],
[ 1, 2, 5, 7, 9 ],
[ 1, 3, 5, 7, 9 ],

... and so on

[download]


I'm sure I'll get it sooner or later, but I'm wondering what's a concise and generic way to do this, if anyone had any ideas (or is bored) :)
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It's sad that a family can be torn apart by such a such a simple thing as a pack of wild dogs

In reply to Permutations question by RazorbladeBidet

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