Enable tree_get, tree_set to filter for the name of a named tuple in the path to a key (hence filter the name of a state in a chained transformation).
This enables distinguishing for attributes identical in two different states except that the names of the states are different.
Enable tree_get, tree_set to fetch or set named tuples by the name of the name tuple. This is handy to fetch a given state in the overall state of a chained optimizer.
Extend capabilities of tree_get, tree_set.
Enable tree_get, tree_set to filter for the name of a named tuple in the path to a key (hence filter the name of a state in a chained transformation). This enables distinguishing for attributes identical in two different states except that the names of the states are different.
Enable tree_get, tree_set to fetch or set named tuples by the name of the name tuple. This is handy to fetch a given state in the overall state of a chained optimizer.