Support type variable definitions in quoted patterns #16942
Closed
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Support explicit type variable definition in quoted patterns.
This allows users to set explicit bounds or use the binding twice.
Previously this was only possible on quoted expression patterns case '{ ... }.
```scala
case '[type x; `x`] =>
case '[type x; Map[`x`, `x`]] =>
case '[type x <: List[Any]; `x`] =>
```
In combination with scala#16907 it would also allow
```scala
case '[type f[X]; `f`] =>
case '[type f <: AnyKind; `f`] =>
```
and therefore solve scala#10864 and scala#11738
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Support explicit type variable definition in quoted patterns. This allows users to set explicit bounds or use the binding twice.
Previously this was only possible on quoted expression patterns case '{ ... }.
In combination with #16907 it would also allow
and therefore solve #10864 and #11738
This is part a part of #16910 that does not need a minor release.