Thoughts
I love Ruby so much. I've been writing Ruby for less than a year, and I can beat every non-codegolf language with something that is
human-readable.
```
->(n){(2**n).digits.index &:odd?}
```
versus JS:
```
n=>(g=k=>k?k&1||1+g(k/10):+g)(2**n)
```