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Add missing derive debug

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Fixes #171.
This commit is contained in:
Carol (Nichols || Goulding) 2016-08-22 12:17:00 -04:00
parent c7856b81b8
commit c88a73688d
1 changed files with 3 additions and 1 deletions
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src/ch06-02-match.md
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@ -94,6 +94,7 @@ can add this information to our `enum` by changing the `Quarter` variant to have
a `State` value: a `State` value:
```rust ```rust
#[derive(Debug)] // So we can inspect the state in a minute
enum UsState { enum UsState {
Alabama, Alabama,
Alaska, Alaska,
@ -150,7 +151,8 @@ be `Coin::Quarter(UsState::Alaska)`. When we compare that value with each of the
match arms, none of them match until we reach `Coin::Quarter(state)`. At that match arms, none of them match until we reach `Coin::Quarter(state)`. At that
point, the binding for `state` will be the value `UsState::Alaska`. We can then point, the binding for `state` will be the value `UsState::Alaska`. We can then
use that binding in the `println!`, thus getting the inner state value out of use that binding in the `println!`, thus getting the inner state value out of
the `Coin` enum variant for `Quarter`. the `Coin` enum variant for `Quarter` and enabling us to print "State quarter
from Alaska!".
Remember the `Option<T>` type from the previous section, and that we wanted to Remember the `Option<T>` type from the previous section, and that we wanted to
be able to get the inner `T` value out of the `Some` case? This will be very be able to get the inner `T` value out of the `Some` case? This will be very