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class Array
# Wraps the object in an Array unless it's an Array. Converts the
# object to an Array using #to_ary if it implements that.
def self.wrap(object)
if object.nil?
[]
# to_a doesn't work correctly with Array() but to_ary always does
elsif object.respond_to?(:to_a) && !object.respond_to?(:to_ary)
[object]
else
Array(object)
end
end
end
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