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This post is auto-generated from RSS feed The Rust Programming Language Forum - Latest topics. Source: Using if let Err(_) on a Thread::JoinHandle::result
I have a JoinHandle
from:
let handle: thread::JoinHandle<_> = thread::spawn(move || {
blah blah blah
}
When I try to join it:
let join_result = handle.join();
if let Err(err) = join_result {
eprintln!("Error {err:?}");
}
I get a clippy error:
warning: irrefutable `if let` pattern
--> src/read_midi_virtual.rs:70:12
|
70 | if let Err(err) = join_result {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this pattern will always match, so the `if let` is useless
= help: consider replacing the `if let` with a `let`
= note: `#[warn(irrefutable_let_patterns)]` on by default
Yet:
let join_result = handle.join();
match join_result {
Ok(_) => (),
Err(err) => eprintln!("Error read_midi_virtual run: Join error: {err:?}"),
}
has no warnings.
I do not understand.
I am using edition 2024 if it matters
5 posts - 3 participants
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