pub struct Span;Expand description
Zero-cost stand-in: a unit struct with no Drop, so span() calls
vanish under optimization. #[inline(always)] matters — the binary
crate calls this across the crate boundary, where a non-generic
function would otherwise survive without LTO.
Auto Trait Implementations§
impl Freeze for Span
impl RefUnwindSafe for Span
impl Send for Span
impl Sync for Span
impl Unpin for Span
impl UnsafeUnpin for Span
impl UnwindSafe for Span
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
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more