pub enum O1Env {
Unset,
Off,
On(O1Cfg),
}Expand description
Three-state env reading: unset falls through to the header hint,
off/0 force-disables even a header hint (the escape hatch).
Variants§
Auto Trait Implementations§
impl Freeze for O1Env
impl RefUnwindSafe for O1Env
impl Send for O1Env
impl Sync for O1Env
impl Unpin for O1Env
impl UnsafeUnpin for O1Env
impl UnwindSafe for O1Env
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