19ecce332e
Stabilize `Result::as_deref` and `as_deref_mut` FCP completed in https://github.com/rust-lang/rust/issues/50264#issuecomment-645681400. This PR stabilizes two new APIs for `std::result::Result`: ```rust fn as_deref(&self) -> Result<&T::Target, &E> where T: Deref; fn as_deref_mut(&mut self) -> Result<&mut T::Target, &mut E> where T: DerefMut; ``` This PR also removes two rarely used unstable APIs from `Result`: ```rust fn as_deref_err(&self) -> Result<&T, &E::Target> where E: Deref; fn as_deref_mut_err(&mut self) -> Result<&mut T, &mut E::Target> where E: DerefMut; ``` Closes #50264 |
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