| 1 | use crate::HashFn; |
|---|---|
| 2 | use std::convert::TryInto; |
| 3 | |
| 4 | /// A hash function that simply takes the last 4 bytes of a given key as the |
| 5 | /// hash value. |
| 6 | #[derive(Eq, PartialEq)] |
| 7 | pub struct UnHashFn; |
| 8 | |
| 9 | impl HashFn for UnHashFn { |
| 10 | #[inline] |
| 11 | fn hash(bytes: &[u8]) -> u32 { |
| 12 | let len: usize = bytes.len(); |
| 13 | u32::from_le_bytes(bytes[len - 4..].try_into().unwrap()) |
| 14 | } |
| 15 | } |
| 16 |