On Feb 13, 2014, at 15:17 , Mauricio Aldazosa 
<[email protected]> wrote:

> My guess is that when using a rest-param a call to next is involved thus 
> realizing two elements of the sequence.

A destructured vararg is nil when there are no more items, which indeed 
requires realizing at least the first item. But that only explains why the 
first item gets realized, not the second (unless I'm missing something).

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