Macro assure::assure_lt

macro_rules! assure_lt {
    ($left:expr, $right:expr $(,)?) => { ... };
    ($left:expr, $right:expr, $($arg:tt)+) => { ... };
}

Assure one value is less than another value.

If true, then return Ok(true).

Otherwise, return Err(…).

This macro has a second form, where a custom message can be provided.

Examples

assure_lt!(1, 2);
assure_lt!(1, 2, "message");