Added exemplary unit test for iter_mut().

[rust-101.git] / src / part12.rs

diff --git a/src/part12.rs b/src/part12.rs
index 7d03ca61c0d1a238618ff996835a1e783d5cd525..c2331eaf618b82aa2ee8e1308512c52b364401cd 100644 (file)
--- a/src/part12.rs
+++ b/src/part12.rs
@@ -166,4 +166,4 @@ fn demo_mut(c: &mut CallbacksMut) {
 // **Exercise 12.1**: Write some piece of code using only the available, public interface of `CallbacksMut` such that a reentrant call to a closure
 // is happening, and the program panics because the `RefCell` refuses to hand out a second mutable borrow of the closure's environment.
 
 // **Exercise 12.1**: Write some piece of code using only the available, public interface of `CallbacksMut` such that a reentrant call to a closure
 // is happening, and the program panics because the `RefCell` refuses to hand out a second mutable borrow of the closure's environment.
 

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