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More complicated lists may be constructed:
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($a, @fred) = @fred; # sets $a to first element of @fred and then removes this first element from @fred
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($a,$b,$c) = (1,2,3); # sets $a=1, $b=2, $c=3
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Curiously, setting a scalar equal to an array returns the length of the array
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$a = @fred; # returns $a as length of @fred
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The function length returns the number of characters in a string
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$a = length (@fred); # returns length in characters of first entry in @fred
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($a) = @fred; # sets $a to be first entry of @fred
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