Skip to content

Move the note about lower bound #2517

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
soutaro merged 1 commit into from
May 27, 2025
Merged

Move the note about lower bound #2517

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
6 changes: 3 additions & 3 deletions docs/syntax.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -767,9 +767,6 @@ _generics-bound_ ::= (No type bound)
| `<` _type_ (The generics parameter has an upper bound)
| '>' _type_ (The generics parameter has a lower bound)

# A type parameter can have both upper and lower bounds, which can be specified in either order:
# `[T < UpperBound > LowerBound]` or `[T > LowerBound < UpperBound]`

_default-type_ ::= (No default type)
| `=` _type_ (The generics parameter has default type)

Expand All @@ -781,6 +778,9 @@ _generics-unchecked_ ::= (Empty)
| `unchecked` (Skips variance annotation validation)
```

A type parameter can have both upper and lower bounds, which can be specified in either order:
`[T < UpperBound > LowerBound]` or `[T > LowerBound < UpperBound]`.

RBS allows class/module/interface/type alias definitions and methods to be generic.

```rbs
Expand Down