A common cause is code like this: ($a, $b) = /foo(bar+)(baz*)/; $result = "got baz: $b"; or $result = "got baz: $1"; You may have a value that "should" be assigned but was instead undefined.

In reply to RE: NEWBIE: Can someone explain this error? by Anonymous Monk
in thread NEWBIE: Can someone explain this error? by ArthurDent

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