Description
https://doc.rust-lang.org/book/ch17-05-traits-for-async.html#the-stream-trait
First of all: Thank you for the excellent chapter about Async Rust.
In the last paragraphs it is written
"In the version of StreamExt used in the trpl crate, the trait not only defines the next method but also supplies a default implementation of next that correctly handles the details of calling Stream::poll_next. This means that even when you need to write your own streaming data type, you only have to implement Stream, and then anyone who uses your data type can use StreamExt and its methods with it automatically."
This is potentially wrong or atleast unclear to me.
It states "In the version of StreamExt used in the trpl crate" but the trpl crate just reexports the standard StreamExt of tokio-stream. In tokio-stream in stream_ext.rs I see a implementation of next but I see no additional "default implementation of next that correctly handles the details of calling Stream::poll_next". Maybe the standard implementation of next is exactly this default implementation. If this is the case, I don't understand why it is written like that.