diff options
| author |  Abseil Team <absl-team@google.com> | 2020-05-15 08:23:25 -0700 |
|---|---|---|
| committer |  Andy Getz <durandal@google.com> | 2020-05-15 17:57:15 -0400 |
| commit | 62cf6a70414e15b356ec4f712ca8758133674f28 (patch) | |
| tree | d517fe8c1bb80458f8dda3e7b77ff7f32cf436d8 /absl/hash/internal | |
| parent | d118d4bb115387cc52c5338221f2554a940e6d90 (diff) | |
Export of internal Abseil changes
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dc36565216b3022abb5a3c92f46fb4079bda869e by Samuel Benzaquen <sbenza@google.com>:
Add support for std::reference_wrapper to absl::Hash.
PiperOrigin-RevId: 311733171
GitOrigin-RevId: dc36565216b3022abb5a3c92f46fb4079bda869e
Change-Id: I74543390446c2b7f6d856935aa36f28539810eef
Diffstat (limited to 'absl/hash/internal')
| -rw-r--r-- | absl/hash/internal/hash.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/absl/hash/internal/hash.h b/absl/hash/internal/hash.h index a71bd4a6..9e608f7c 100644 --- a/absl/hash/internal/hash.h +++ b/absl/hash/internal/hash.h @@ -551,6 +551,13 @@ typename std::enable_if<is_hashable<Key>::value, H>::type AbslHashValue( // AbslHashValue for Wrapper Types // ----------------------------------------------------------------------------- +// AbslHashValue for hashing std::reference_wrapper +template <typename H, typename T> +typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue( + H hash_state, std::reference_wrapper<T> opt) { + return H::combine(std::move(hash_state), opt.get()); +} + // AbslHashValue for hashing absl::optional template <typename H, typename T> typename std::enable_if<is_hashable<T>::value, H>::type AbslHashValue( |