Module rustc_hir::def

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The result of resolving a path before lowering to HIR, with “module” segments resolved and associated item segments deferred to type checking. base_res is the resolution of the resolved part of the path, unresolved_segments is the number of unresolved segments.
Just a helper ‒ separate structure for each namespace.


What kind of constructor something is.
Encodes if a DefKind::Ctor is the constructor of an enum variant or a struct.
What kind of definition something is; e.g., mod vs struct.
Resolution for a lifetime appearing in a type.
Different kinds of symbols can coexist even if they share the same textual name. Therefore, they each have a separate universe (known as a “namespace”).
An attribute that is not a macro; e.g., #[inline] or #[rustfmt::skip].
The resolution of a path or export.