On Sun, 5 Nov 2023 17:17:43 GMT, Tagir F. Valeev <tval...@openjdk.org> wrote:
>> This is a Draft PR for [JEP-461](https://openjdk.org/jeps/461) > > src/java.base/share/classes/java/util/stream/Gatherer.java line 252: > >> 250: * Gatherer as input that Gatherer >> 251: */ >> 252: default <AA, RR> Gatherer<T, ?, RR> andThen(Gatherer<? super R, AA, >> ? extends RR> that) { > > It would be great to remove AA type parameter, which is mentioned only once, > so could be replaced with `?`. This will improve user experience if they > happen to need to specify type parameters explicitly. This is especially important given that often you don't know the AA type at all. E.g., imagine that you are doing `.andThen(Gatherers.fold(...))`, but `fold` returns `Gatherer<T, ?, R>`, so you can specify explicit `RR`, but not `AA`. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/16420#discussion_r1386696219
