> no logical reason to distinguish between "empty" and "undefined" for scalars

What do you mean by "empty scalar"? The empty string? Note that it's a perfect value which you can print, measure its length, match against a regex, etc. Undefined value, on the other hand, means the value is missing. If you need to have a special value for "missing value" for the whole array, use an array reference, and assign undef if the whole array is "undefined".

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

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In reply to Re^4: How to differentiate an empty array from an unitialized one? by choroba
in thread How to differentiate an empty array from an unitialized one? by iatros

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