std::try!
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[src]
macro_rules! try { ($expr:expr) => (match $expr { $crate::result::Result::Ok(val) => val, $crate::result::Result::Err(err) => { return $crate::result::Result::Err($crate::error::FromError::from_error(err)) } }) }
Helper macro for unwrapping Result values while returning early with an
error if the value of the expression is Err. For more information, see
std::io.