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part 09: explain how Rust prevents iterator invalidation
[rust-101.git]
/
src
/
part05.rs
diff --git
a/src/part05.rs
b/src/part05.rs
index 3992fb1dcf7b6a7445bb6a0c0f1aee2846c4304c..7324d13361111109ab482ee3b82d43051b7ee5b4 100644
(file)
--- a/
src/part05.rs
+++ b/
src/part05.rs
@@
-131,7
+131,7
@@
fn work_on_variant(mut var: Variant, text: String) {
Variant::Number(ref mut n) => ptr = n,
Variant::Text(_) => return,
}
Variant::Number(ref mut n) => ptr = n,
Variant::Text(_) => return,
}
- /* var = Variant::Text(text); */
+ /* var = Variant::Text(text); */
/* BAD! */
*ptr = 1337;
}
//@ Now, imagine what would happen if we were permitted to also mutate `var`. We could, for example,
*ptr = 1337;
}
//@ Now, imagine what would happen if we were permitted to also mutate `var`. We could, for example,