I believe it used to be uint (usize) back in pre-1.0, and IIRC inference didn't work well or wasn't supposed to work at all. I recall needing explicit prefixes

I believe it used to be uint (usize) back in pre-1.0, and IIRC inference didn't work well or wasn't supposed to work at all. I recall needing explicit prefixes on my int literals back then. No longer the case.