Nim discourages unsigned int. This is why: <https://github.com/nim-lang/Nim/wiki/Unofficial-FAQ#why-are-unsigned-types-discouraged>
- Why does 'string' and 'len' use 'int' rather than 'uint' for ... randbox
- Why does 'string' and 'len' use 'int' rather than 'uint'... Hlaaftana
- Why does 'string' and 'len' use 'int' rather than 'u... demotomohiro
