>>>>> "C" == Christoph Rippel <crippel / primenet.com> writes: C> for hashes (you should use a recursion limited hash-value - this effects C> the hash value of non-recursive Arrays too (and hash-value of Hashes C> them-selves) but its simpler than an ``untangled hash value'' and more C> efficient (even for non-recursive Arrays). I've not understood, how do you define the hash value of a = [] a << a actually it give an error. Guy Decoux