Aren't the following functionally equivalent,
Technically, no. [sort @array]->[0]; does return a single element. @{[sort @array]}[0]; however is a slice with one element. I would have expected it to warn - just as @array[0] will warn. The PC way to write it is: 
  print ${[sort @array]}[0];

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In reply to Re^6: Why does 'print shift sort @array' not work? by JavaFan
in thread Why does 'print shift sort @array' not work? by pat_mc

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