Rolf was faster with his answer than me. Allow one annotation: perldoc -f map has a paragraph explaining this ambiguity.
McA
In reply to Re^2: map syntax error -- weird
by McA
in thread map syntax error -- weird
by Anonymous Monk
| For: | Use: | ||
| & | & | ||
| < | < | ||
| > | > | ||
| [ | [ | ||
| ] | ] |