Macro assertables::assert_fn_lt_expr_as_result

source · 
macro_rules! assert_fn_lt_expr_as_result {
    ($a_function:path, $a_param:expr, $b_expr:expr) => { ... };
    ($a_function:path, $b_expr:expr) => { ... };
}
Expand description

Assert a function output is less than an expression.

  • If true, return Result Ok(()).

  • Otherwise, return Result Err with a diagnostic message.

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.

§Module macros