https://doc.rust-lang.org/nightly/nightly-rustc/rustc_hir/def_id/struct.LocalDefId.html
LocalDefId in rustc_hir::def_id - Rust
A `LocalDefId` is equivalent to a `DefId` with `krate == LOCAL_CRATE`. Since we encode this information in the type, we can ensure at compile time that no...
rustchirdefid