Manage child states in a dragmapr hierarchy
Usage
d_set_child_state(hierarchy, key, state)
d_child_state(hierarchy, key, missing = NULL)
d_remove_child_state(hierarchy, key)Arguments
- hierarchy
A
dragmapr_hierarchy_state.- key
Single child key.
- state
A child
d_state().- missing
Value returned when a child key is absent.