pub enum DropStyle {
Dead,
Static,
Conditional,
Open,
}
Expand description
Describes how/if a value should be dropped.
Variants§
Dead
The value is already dead at the drop location, no drop will be executed.
Static
The value is known to always be initialized at the drop location, drop will always be executed.
Conditional
Whether the value needs to be dropped depends on its drop flag.
Open
An “open” drop is one where only the fields of a value are dropped.
For example, this happens when moving out of a struct field: The rest of the struct will be dropped in such an “open” drop. It is also used to generate drop glue for the individual components of a value, for example for dropping array elements.
Trait Implementations§
Auto Trait Implementations§
impl RefUnwindSafe for DropStyle
impl Send for DropStyle
impl Sync for DropStyle
impl Unpin for DropStyle
impl UnwindSafe for DropStyle
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
Layout§
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...)
attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 1 byte
Size for each variant:
Dead
: 0 bytesStatic
: 0 bytesConditional
: 0 bytesOpen
: 0 bytes