Add listener API #3470
Closed
Add listener API #3470
Conversation
This file contains 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
mikayla-maki
changed the title
mikayla-maki
changed the title
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Outdated suggestions cannot be applied.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.
This PR attempts to economize on the allocations made in 'library' crates (like
ui2) by providing a wrapper around the most common pattern of callbacks used in thedivelement. Initially this was implemented with aIntoListenermethod that could take both a closure and a boxed closure. Unfortunately, due to rust-lang/rust#41078 (comment), it is impossible to have proper type inference for this pattern and the rust compiler's error is opaque. To fix this, we added a function with a normal closure parameter and made it a requirement at all callsites. I believe this tradeoff is an acceptable tradeoff for the composability and runtime performance gains that library-style crates receive.Release Notes: