chainerror/booksrc/tutorial12.md

# Deref for the ErrorKind

Because ChainError<T> implements Deref to &T, we can also match on `*e` instead of `e.kind()`
or call a function with `&e`
~~~rust
{{#include ../examples/tutorial12.rs}}
# #[allow(dead_code)]
# mod chainerror {
{{#includecomment ../src/lib.rs}}
# }
~~~
impl Deref for ChainError 2019-02-01 11:40:46 +01:00			`# Deref for the ErrorKind`

add more docs 2019-02-03 19:33:26 +01:00			Because ChainError<T> implements Deref to &T, we can also match on `*e` instead of `e.kind()`
			or call a function with `&e`
impl Deref for ChainError 2019-02-01 11:40:46 +01:00			`~~~rust`
simplify booksrc imports 2019-03-04 11:38:35 +01:00			`{{#include ../examples/tutorial12.rs}}`
impl Deref for ChainError 2019-02-01 11:40:46 +01:00			`# #[allow(dead_code)]`
			`# mod chainerror {`
			`{{#includecomment ../src/lib.rs}}`
			`# }`
			`~~~`