Fix signature of Result in tasks tutorial. Closes #8343
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@ -423,7 +423,7 @@ do_some_work();
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While it isn't possible for a task to recover from failure, tasks may notify
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While it isn't possible for a task to recover from failure, tasks may notify
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each other of failure. The simplest way of handling task failure is with the
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each other of failure. The simplest way of handling task failure is with the
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`try` function, which is similar to `spawn`, but immediately blocks waiting
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`try` function, which is similar to `spawn`, but immediately blocks waiting
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for the child task to finish. `try` returns a value of type `Result<int,
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for the child task to finish. `try` returns a value of type `Result<T,
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()>`. `Result` is an `enum` type with two variants: `Ok` and `Err`. In this
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()>`. `Result` is an `enum` type with two variants: `Ok` and `Err`. In this
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case, because the type arguments to `Result` are `int` and `()`, callers can
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case, because the type arguments to `Result` are `int` and `()`, callers can
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pattern-match on a result to check whether it's an `Ok` result with an `int`
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pattern-match on a result to check whether it's an `Ok` result with an `int`
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