more_asserts::debug_assert_le!

macro_rules! debug_assert_le {
    ($left:expr, $right:expr) => { ... };
}

Panics if the first expression is not less than or equal to the second. Requires that the types be comparable with <=.

Prints the values out on panic.

This macro is disabled by default in optimized builds, unless -C debug-assertions is provided to the compiler.