39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
// Copyright 2015-2018 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Provides a `H256FastMap` type with H256 keys and fast hashing function.
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extern crate ethereum_types;
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extern crate plain_hasher;
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use ethereum_types::H256;
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use std::hash;
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use std::collections::HashMap;
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use plain_hasher::PlainHasher;
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/// Specialized version of `HashMap` with H256 keys and fast hashing function.
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pub type H256FastMap<T> = HashMap<H256, T, hash::BuildHasherDefault<PlainHasher>>;
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_works() {
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let mut h = H256FastMap::default();
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h.insert(H256::from(123), "abc");
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}
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} |