> A "list producing expression used in scalar context" does not produce a list. It just produces a single value, which is the last element in the comma-delimited expression.

Maybe better phrased "a list-producing expression used in scalar context" will not produce an intermediate LIST which is then evaluated in scalar context, but a scalar is produced depending on the value. 

  DB<102> scalar (a..d)
 => "1E0"

  DB<103> sub tst {a..d}

  DB<104> tst()
 => ("a", "b", "c", "d")

  DB<105> scalar tst()
 => "1E0"

  DB<106> scalar ("a", "b", "c", "d")
 => "d"

  DB<107> sub tst { @{[a..d]} }

  DB<108> scalar tst()
 => 4

[download]

I wonder if a listify operator could help avoiding bugs when changing the return expression of a sub.

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re^2: Return Value of List-Producing Elements in Scalar Context by LanX
in thread Return Value of List-Producing Elements in Scalar Context by pikus

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