Macro assert_option_none_as_result

macro_rules! assert_option_none_as_result {
    ($a:expr $(,)?) => { ... };
}

👎Deprecated: Please rename from assert_option_none_as_result to assert_none_as_result because more developers prefer the shorter name.

Assert an expression.is_none() is true.

• If true, return Result Ok(()).

• Otherwise, return Result Err with a diagnostic message.

This macro provides the same statements as assert_option_none, 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

• assert_option_none
• assert_option_none_as_result
• debug_assert_option_none