Struct tower::util::error::optional::None [−][src]
pub struct None(_);
This is supported on crate feature
util
only.Expand description
Error returned if the inner Service
has not been set.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for None
impl UnwindSafe for None
Blanket Implementations
Mutably borrows from an owned value. Read more
pub fn vzip(self) -> V
Attaches the provided Subscriber
to this type, returning a
WithDispatch
wrapper. Read more
Attaches the current default Subscriber
to this type, returning a
WithDispatch
wrapper. Read more