What a clever inefficiency! I was trying to find a way to generate a list of numbers that was at least as big as each list, but failed...

With ?: I can save some, and shaving with map$foo,@list tricks I can save some more. This brings the safe version down to 48 characters. 

sub Mix {
map{my$i=$_;map$i<@$_?$$_[$i]:(),@_}0..map@$_,@_
}

[download]
That matches what was done unsafely before. But unfortunately for sanity's sake observe the following 33 character entry: 
sub Mix {
map{splice@$_,0,1}map@_,map@$_,@_
}

[download]
I have written saner code...

UPDATE
Saved 3 chars on the unsafe example, there is no need for a nice numerical list when I will be just converting the elements...

UPDATE 2
Sheesh. And the safe example can be modified to the rather bizarre 45 character beast: 

sub Mix {
map{splice@$_,0,1}map@_,map@$_,@_=map[@$_],@_
}

[download]
UPDATE 3
I give up on shrinking this. However I have 4 variations on the key 33 char sub. In terms of efficiency of execution, the following wins: 
sub Mix {
map{map{splice@$_,0,1}(@_)x@$_}@_
}

[download]
So that is (barring the unexpected) my final answer.

In reply to Re (tilly) 2: Mixing up da Arrays (Golf) (Russ=53) by tilly
in thread Mixing up da Arrays (Golf) by ChOas

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