Macro failure::ensure
[−]
[src]
macro_rules! ensure { ($cond:expr, $e:expr) => { ... }; ($cond:expr, $fmt:expr, $($arg:tt)+) => { ... }; }
Exits a function early with an Error
if the condition is not satisfied.
Similar to assert!
, ensure!
takes a condition and exits the function
if the condition fails. Unlike assert!
, ensure!
returns an Error
,
it does not panic.