Macro assertables::assert_fn_ok_lt_expr_as_result

macro_rules! assert_fn_ok_lt_expr_as_result {
    ($a_function:path, $a_param:expr, $b_expr:expr) => { ... };
    ($a_function:path, $b_expr:expr) => { ... };
}

Assert a function ok() is less than an expression.

• If true, return Result Ok(()).

• Otherwise, return Result Err with a diagnostic message.

Examples

This macro provides the same statements as [assert_], except this macro returns a Result, rather than doing a panic.

This macro is useful for runtime checks, such as checking parameters, or sanitizing inputs, or handling different results in different ways.

Related

• [assert_fn_ok_lt_expr]
• [assert_fn_ok_lt_expr_as_result]
• [debug_assert_fn_ok_lt_expr]