scala / scala/scala-java8-compat
Override mutating CompletableFuture methods to throw UOE
Open
Nobody has claimed this yet.
enhancement
- Dominant language
- Scala
- Stars
- 438
- Forks
- 63
- Avg merge
- 5h 12m
- Merged PRs (30d)
- 2
Description
In private class CF[T] extends CompletableFuture[T] with (Try[T] => Unit) { as an example.
So if a Java user downcasts to CompletableFuture, it won't go haywire.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Locate the private class CF[T] extending CompletableFuture[T] and inspect the mutating CompletableFuture methods available to Java callers. The work is done when those methods are overridden to throw UnsupportedOperationException, preventing a downcast CompletableFuture from mutating the result.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, scala
- Domain
- api
- Issue type
- Feature
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100