Your Solution 3 can be shorter: 
f(\[]);

[download]
This is clever! I did not see first that this is really equivalent to my solution 3, but indeed it is. Plus, I find it simple and elegant. Well, a little bit obfuscating maybe, but meeting my requirements. Thanks a lot!

-- 
Ronald Fischer <ynnor@mm.st>

In reply to Re^2: Anonymous scalar ref revisited by rovf
in thread Anonymous scalar ref revisited by rovf

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