Structs§
- RegionVid 
- A region variable ID.
Enums§
- RegionKind 
- Representation of regions. Note that the NLL checker uses a distinct
representation of regions. For this reason, it internally replaces all the
regions with inference variables – the index of the variable is then used
to index into internal NLL data structures. See rustc_const_eval::borrow_checkmodule for more information.