use splat with an array when case

splat-case.rb

# if we want to check whether a particular value is in an array, we have
# a couple options... Most times simply calling array.include?(element) is
# sufficient, but we can also get creative by using the splat function
# with a case statement to check multiple arrays ;)

hondai  = ['hondai', 'acura', 'civic', 'element', 'fit', ...]
toyota = ['toyota', 'lexus', 'tercel', 'rx', 'yaris', ...]

case car
when *toyota then # Do something for Toyota cars
when *hondai then # Do something for Hondai cars
...
end

# ...which translates to:
case car
when 'toyota', 'lexus', 'tercel', 'rx', 'yaris', ... then # Do something for Toyota cars
when 'hondai', 'acura', 'civic', 'element', 'fit', ... then # Do something for Hondai cars
...
end

# ...which is identical to:
case
when toyota.include?(car) then # Do something for Toyota cars
when hondai.include?(car) then # Do something for Hondai cars
...
end