Folks, why is the error handling chapter of the second edition of TRPL so sparse? Have the techniques mentioned in the first edition been replaced by something better? More specifically the second edition does not say anything about working with functions returning different error types in the same caller function.
First edition: https://doc.rust-lang.org/book/error-handling.html
Second edition: http://rust-lang.github.io/book/second-edition/ch09-00-error-handling.html