Hi,
I managed to make read/write properly in my code, but I wonder if it would be possible to extend the help page ITensor and include literary one sentence hinting that “restoring the SiteSet class originally used to construct the MPS;” may require a custom read method, when using a custom SiteSet.
The problem is the suggested code:
SpinHalf sites;
readFromFile("sites_file",sites);
works with built in SiteSets, but not necessarily with custom SiteSets (but it compiles, and resotres the SiteSet at least partially).
So It took me a lot of time to figure out what is wrong. I assumed back then that readFromFile works similar to python’s pickle, but it really does not.
I think an extra one sentence would be really helpful in clearing things up.