Macro tokio_io::try_nb
[−]
[src]
macro_rules! try_nb { ($e:expr) => { ... }; }
A convenience macro for working with io::Result<T>
from the Read
and
Write
traits.
This macro takes io::Result<T>
as input, and returns T
as the output. If
the input type is of the Err
variant, then Poll::NotReady
is returned if
it indicates WouldBlock
or otherwise Err
is returned.