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Export of internal Abseil changes.

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dabd5614eec687a27bcba28e1d98e84ce716f281 by Abseil Team <absl-team@google.com>:

Demonstrate that std::bitset is supported by AbslHash, both with a comment and
a test.

PiperOrigin-RevId: 218782040
GitOrigin-RevId: dabd5614eec687a27bcba28e1d98e84ce716f281
Change-Id: I777d5e030ba8c6b8a2a353e29ace87484caa811f
This commit is contained in:
Abseil Team 2018-10-25 17:47:06 -07:00 committed by Ashley Hedberg
parent 94c298e2a0
commit f86f941385
1 changed files with 9 additions and 0 deletions
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9
absl/hash/internal/hash.h
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@ -494,6 +494,15 @@ AbslHashValue(H hash_state, const absl::variant<T...>& v) {
} }
return H::combine(std::move(hash_state), v.index()); return H::combine(std::move(hash_state), v.index());
} }
// -----------------------------------------------------------------------------
// AbslHashValue for Other Types
// -----------------------------------------------------------------------------
// AbslHashValue for hashing std::bitset is not defined, for the same reason as
// for vector<bool> (see std::vector above): It does not expose the raw bytes,
// and a fallback to std::hash<> is most likely faster.
// ----------------------------------------------------------------------------- // -----------------------------------------------------------------------------
// hash_range_or_bytes() // hash_range_or_bytes()