void function ( ) { last = head ; }
clears the list . this does not throw away the old buckets but only resets the end-pointer of the list to the first element . all buckets are then unused and are reused when the list is filled again . concode_field_sep Bucket next concode_elem_sep Bucket head concode_elem_sep Bucket current concode_elem_sep Bucket last concode_elem_sep int xCov concode_elem_sep Bucket prev concode_elem_sep int yCov concode_elem_sep int xPos concode_field_sep void add concode_elem_sep void rewind concode_elem_sep Bucket findOrInsert