Wraps the object in an Array unless it’s
an Array. Converts the object to an Array using #to_ary if it implements that.
# File activesupport/lib/active_support/core_ext/array/wrapper.rb, line 7
def wrap(object)
case object
when nil
[]
when self
object
else
if object.respond_to?(:to_ary)
object.to_ary
else
[object]
end
end
end