Macro assert_diff_le_x_as_result 

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

Assert a difference is less than or equal to an expression.

Pseudocode:
Δ ≤ x

• If true, return Result Ok((lhs, rhs)).

• When false, return Err with a message and the values of the expressions with their debug representations.

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

• assert_diff_le_x
• assert_diff_le_x_as_result
• debug_assert_diff_le_x