pub trait Base62 { // Required method fn base62(&self) -> String; }
Encodes a u64 hash to base-62 string.
Since 52*62^5 > 2^32, so 6 digit base62 string can represent u32 hash.
52*62^5 > 2^32
Since 52*62^10 > 2^64, so 11 digit base62 string can represent u64 hash.
52*62^10 > 2^64