Skip to content

correct type of SubstsRef #1347

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
May 7, 2022
Merged

correct type of SubstsRef #1347

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion src/generics.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ In rustc this is done using the `SubstsRef` that we mentioned above (“substs
Conceptually, you can think of `SubstsRef` as a list of types that are to be substituted for the
generic type parameters of the ADT.

`SubstsRef` is a type alias of `List<GenericArg<'tcx>>` (see [`List` rustdocs][list]).
`SubstsRef` is a type alias of `&'tcx List<GenericArg<'tcx>>` (see [`List` rustdocs][list]).
[`GenericArg`] is essentially a space-efficient wrapper around [`GenericArgKind`], which is an enum
indicating what kind of generic the type parameter is (type, lifetime, or const). Thus, `SubstsRef`
is conceptually like a `&'tcx [GenericArgKind<'tcx>]` slice (but it is actually a `List`).
Expand Down