# frozen-string-literal: true
p "foo".frozen? #=> true
# frozen-string-literal: true
p "foo#{42}bar".frozen? #=> true
class MyArray < Array
end
ary = MyArray.new([1, 2, 3]).drop(1)
p ary #=> [2, 3]
p ary.class #=> MyArray # 2.7
ary.class #=> Array # 3.0
[2, 3] Array
Array