7c335e8764
* misc: bump license header to 2019 * misc: remove_duplicate_empty_lines.sh * misc: run license header script * commit cargo lock
42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
|
|
// This file is part of Parity Ethereum.
|
|
|
|
// Parity Ethereum is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// Parity Ethereum is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
//! Provides a `H256FastMap` type with H256 keys and fast hashing function.
|
|
|
|
extern crate ethereum_types;
|
|
extern crate plain_hasher;
|
|
|
|
use ethereum_types::H256;
|
|
use std::hash;
|
|
use std::collections::{HashMap, HashSet};
|
|
use plain_hasher::PlainHasher;
|
|
|
|
/// Specialized version of `HashMap` with H256 keys and fast hashing function.
|
|
pub type H256FastMap<T> = HashMap<H256, T, hash::BuildHasherDefault<PlainHasher>>;
|
|
/// Specialized version of HashSet with H256 values and fast hashing function.
|
|
pub type H256FastSet = HashSet<H256, hash::BuildHasherDefault<PlainHasher>>;
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn test_works() {
|
|
let mut h = H256FastMap::default();
|
|
h.insert(H256::from(123), "abc");
|
|
}
|
|
}
|