code: func (fi *FastIntegerHashMap) Set(key, value uint64) {
  	if float64(fi.count+1)/float64(len(fi.packets)) > ratio {
  		fi.rebuild()
  	}
  
  	fi.packets.set(&packet{key: key, value: value})
  	fi.count++
  }
docs: // Set will set the provided key with the provided value.