Auto merge of #41768 - rap2hpoutre:patch-4, r=frewsxcv
Add an example to std:🧵:Result type This PR is a part of https://github.com/rust-lang/rust/issues/29378. I submit this PR with the help (mentoring) of @steveklabnik. I'm still not sure my request is good enough but I don't want to spoil the issue with too much questions so I continue here. r? @steveklabnik
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@ -865,9 +865,31 @@ impl fmt::Debug for Thread {
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// JoinHandle
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////////////////////////////////////////////////////////////////////////////////
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/// A specialized [`Result`] type for threads.
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///
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/// Indicates the manner in which a thread exited.
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///
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/// A thread that completes without panicking is considered to exit successfully.
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///
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/// # Examples
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///
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/// ```no_run
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/// use std::thread;
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/// use std::fs;
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///
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/// fn copy_in_thread() -> thread::Result<()> {
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/// thread::spawn(move || { fs::copy("foo.txt", "bar.txt").unwrap(); }).join()
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/// }
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///
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/// fn main() {
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/// match copy_in_thread() {
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/// Ok(_) => println!("this is fine"),
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/// Err(_) => println!("thread panicked"),
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/// }
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/// }
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/// ```
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///
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/// [`Result`]: ../../std/result/enum.Result.html
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#[stable(feature = "rust1", since = "1.0.0")]
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pub type Result<T> = ::result::Result<T, Box<Any + Send + 'static>>;
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