function s = Stack(domains)
%
% STACK - A one-dimensional 'stack' of domains.
%
%    A stack object is a container for one-dimensional domains,
%    which are instances of class Domain1D. The domains are of two
%    types - extended domains, and connector domains.
%
s.stack_id = -1;
s.domains = domains;
if nargin == 1
    nd = length(domains);
    for n=1:nd
        ids(n) = domain_hndl(domains(n));
    end
    s.stack_id = stack_methods(0, 8, nd, ids);
else
    help(Stack);
    error('wrong number of parameters');
end
if s.stack_id < 0
    error(geterr);
end
s = class(s, 'Stack');