/guava/guava/src/com/google/common/hash/Hashing.java
list.add( first) ;
list.add ( second ) ;
return (bits + 31) & ~31; } public static HashFunction concatenating( HashFunction first, HashFunction second, HashFunction... rest) { List<HashFunction> list = new ArrayList<>(); list.add(first); <extra_id_0> Collections.addAll(list, rest); return new ConcatenatedHashFunction(list.toArray(new HashFunction[0])); } public static HashFunction concatenating(Iterable<HashFunction> hashFunctions) { checkNotNull(hashFunctions); List<HashFunction> list = new ArrayList<>();