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Remove unecessary variable call, `#sort!` always returns an array
Sooo... @carlosantoniodasilva :)
You don't even need to use sort!. Using sort would be enough here.
This applies to the helpers variable just below too.
@dmathieu at least we avoid creating a few extra objects :).
@carlosantoniodasilva: I'm not saying this is bad. I'm saying we create even less extra objects :)
@dmathieu sort! is faster than sort, and avoid creating a shallow copy of the original object