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error[E0594]: cannot assign to `v.v`, which is behind a `&` reference
--> $DIR/suggest-mut-method-for-loop-hashmap.rs:17:9
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LL | for (_k, v) in map.iter() {
| ----------
| | |
| | help: use mutable method: `iter_mut()`
| this iterator yields `&` references
...
LL | v.v += 1;
| ^^^^^^^^ `v` is a `&` reference, so the data it refers to cannot be written
error: aborting due to previous error
For more information about this error, try `rustc --explain E0594`.
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