macro_rules! assert_fn_err_ge_x_as_result {
($a_function:path, $a_param:expr, $b_expr:expr $(,)?) => { ... };
($a_function:path, $b_expr:expr $(,)?) => { ... };
}Expand description
Assert a function error is greater than or equal to an expression.
Pseudocode:
(function(param) ⇒ Err(a) ⇒ a) ≥ expr
-
If true, return Result
Ok(a). -
Otherwise, return Result
Err(message).
This macro is useful for runtime checks, such as checking parameters, or sanitizing inputs, or handling different results in different ways.