I was thinking that someone might use that expression that reads and writes to @_ inside another expression that depends on whether @_ has already been fetched or altered. ?: isn't just if/else, its an expression which can be used inside other expressions.

$join = ( @_ ? "Argument, the first"  : shift )
      . ( @_ ? "Argument, the second" : shift );

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In reply to Re^4: Confused by Perl ternary operator by diotalevi
in thread Confused by Perl ternary operator by newest_newbie

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