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$\begingroup$ Very sneaky! I like it :) $\endgroup$

sebhofer
– sebhofer

2013-02-12 16:25:18 +00:00
Commented Feb 12, 2013 at 16:25
$\begingroup$ nice!! (+1) also works without Alternatives: func[x : _?NonNegative : 0, dummy___?Negative] := (x - 1)^2 + 5? $\endgroup$

kglr
– kglr

2013-02-12 19:18:02 +00:00
Commented Feb 12, 2013 at 19:18
$\begingroup$ Wow. My head is spinning on this one. Doesn't seem to work for functions that have multiple arguments which should match these patterns though. Impressive, nonetheless. $\endgroup$

kale
– kale

2013-02-12 19:27:03 +00:00
Commented Feb 12, 2013 at 19:27

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