lib/rufus/tokyo/cabinet/abstract.rb
def delete (k)

      k = k.to_s

      v = self[k]

      lib.abs_out(@db, k, Rufus::Tokyo.blen(k)) ? v : nil
    end
def delete (k)

      k = k.to_s

      v = self[k]

      lib.abs_out(@db, k, Rufus::Tokyo.blen(k)) ? v : nil
    end
Removes a record from the cabinet, returns the value if successful
 else nil.