Enum diesel::connection::statement_cache::MaybeCached
source · #[non_exhaustive]pub enum MaybeCached<'a, T: 'a> {
CannotCache(T),
Cached(&'a mut T),
}
Expand description
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
CannotCache(T)
Contains a not cached prepared statement
Cached(&'a mut T)
Contains a reference cached prepared statement
Trait Implementations§
source§impl<'a, T> Deref for MaybeCached<'a, T>
impl<'a, T> Deref for MaybeCached<'a, T>
Auto Trait Implementations§
impl<'a, T> Freeze for MaybeCached<'a, T>where
T: Freeze,
impl<'a, T> RefUnwindSafe for MaybeCached<'a, T>where
T: RefUnwindSafe,
impl<'a, T> Send for MaybeCached<'a, T>where
T: Send,
impl<'a, T> Sync for MaybeCached<'a, T>where
T: Sync,
impl<'a, T> Unpin for MaybeCached<'a, T>where
T: Unpin,
impl<'a, T> !UnwindSafe for MaybeCached<'a, T>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more