Maybe there should be a __ here ?

[agumonkey]

https://github.com/crazymykl/rust-koans/blob/2e31e3cce84cbed69c8e96c42e5bcf37966bba57/src/koans/integer.rs#L45

such as:

let __ num: i8 = 1;

I was confused if it was a test or somehow a helper function.

[shaleh]

This issue has been resolved.