No, the documentation is all lies :) 
C:\>perl -e"die scalar %hash
0 at -e line 1.

C:\>perl -e"die scalar %ENV
26/64 at -e line 1.

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In reply to Re^3: What is the most efficient way to see if a hash is empty? by Anonymous Monk
in thread What is the most efficient way to see if a hash is empty? by ELISHEVA

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