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- fn main() {}
- enum A {
- Foo(String)
- }
- enum AMut<'a> {
- Foo(&'a mut String)
- }
- impl A {
- fn as_ref_mut(&mut self) -> AMut {
- match *self {
- A::Foo(ref mut s) => AMut::Foo(s)
- }
- }
- }
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