FxHasher in rustc_data_structures::fx - Rust (original) (raw)
pub struct FxHasher {
pub(crate) hash: usize,
}Expand description
A speedy hash algorithm for use within rustc. The hashmap in liballoc by default uses SipHash which isn’t quite as speedy as we want. In the compiler we’re not really worried about DOS attempts, so we use a fast non-cryptographic hash.
The current implementation is a fast polynomial hash with a single bit rotation as a finishing step designed by Orson Peters.
Writes some data into this Hasher. Read more
Writes a single u8 into this hasher.
Writes a single u16 into this hasher.
Writes a single u32 into this hasher.
Writes a single u64 into this hasher.
Writes a single u128 into this hasher.
Writes a single usize into this hasher.
Returns the hash value for the values written so far. Read more
Writes a single i8 into this hasher.
Writes a single i16 into this hasher.
Writes a single i32 into this hasher.
Writes a single i64 into this hasher.
Writes a single i128 into this hasher.
Writes a single isize into this hasher.
🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)
Writes a length prefix into this hasher, as part of being prefix-free. Read more
🔬This is a nightly-only experimental API. (hasher_prefixfree_extras)
Writes a single str into this hasher. Read more
Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.
Size: 8 bytes