update: it's wrong, only read further to learn from mistakes ;-)

> to portably get the number of keys in a hash, use keys in scalar context; scalar(%hash) is not backwards compatible

nitpick for the sake of fun, b/c of the magic of the string_to_number conversion using it as a number will portably work.

(tho I'd also prefer using keys here :)

  DB<1> p $]
5.024001

  DB<2> %h=(a=>0)

  DB<3> p scalar %h
1/8

  DB<4> p 0+ %h
1

  DB<5>

[download]

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re^2: How to test for empty hash? by LanX
in thread How to test for empty hash? by scareduck

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