blob: d44ddc9cad87e0913915307a62dd505c344bf35b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
#pragma once
#include <util/generic/hash.h>
#include <util/random/random.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
//! Updates #h with #k.
//! Cf. |boost::hash_combine|.
void HashCombine(size_t& h, size_t k);
//! Updates #h with the hash of #k.
//! Cf. |boost::hash_combine|.
template <class T>
void HashCombine(size_t& h, const T& k);
////////////////////////////////////////////////////////////////////////////////
//! Provides a hasher that randomizes the results of another one.
template <class TElement, class TUnderlying = ::THash<TElement>>
class TRandomizedHash
{
public:
TRandomizedHash();
size_t operator () (const TElement& element) const;
private:
size_t Seed_;
TUnderlying Underlying_;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
#define HASH_INL_H_
#include "hash-inl.h"
#undef HASH_INL_H_
|
