docs(STYLE.md): prefer try_next() over next()

This commit is contained in:
link2xt
2025-07-21 16:27:22 +00:00
committed by l
parent dbad714539
commit 0c51b4fe41

View File

@@ -78,6 +78,27 @@ All errors should be handled in one of these ways:
- With `.log_err().ok()`.
- Bubbled up with `?`.
When working with [async streams](https://docs.rs/futures/0.3.31/futures/stream/index.html),
prefer [`try_next`](https://docs.rs/futures/0.3.31/futures/stream/trait.TryStreamExt.html#method.try_next) over `next()`, e.g. do
```
while let Some(event) = stream.try_next().await? {
todo!();
}
```
instead of
```
while let Some(event_res) = stream.next().await {
todo!();
}
```
as it allows bubbling up the error early with `?`
with no way to accidentally skip error processing
with early `continue` or `break`.
Some streams reading from a connection
return infinite number of `Some(Err(_))`
items when connection breaks and not processing
errors may result in infinite loop.
`backtrace` feature is enabled for `anyhow` crate
and `debug = 1` option is set in the test profile.
This allows to run `RUST_BACKTRACE=1 cargo test`