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[absl] Update documentation to reflect hash support for std::wstring, std::u16string and std::u32stringstrings

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PiperOrigin-RevId: 515726337
Change-Id: I08e184ec1f7169835c034ac45a7e87293dc53078
This commit is contained in:
Lawrence Wolf-Sonkin
2023-03-10 13:38:07 -08:00
committed by Copybara-Service
parent ed8428015f
commit d8933b836b
2 changed files with 10 additions and 9 deletions
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7
absl/hash/hash.h
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@@ -110,9 +110,10 @@ ABSL_NAMESPACE_BEGIN
// * std::unique_ptr and std::shared_ptr
// * All string-like types including:
// * absl::Cord
// * std::string
// * std::string_view (as well as any instance of std::basic_string that
// uses char and std::char_traits)
// * std::string (as well as any instance of std::basic_string that
// uses one of {char, wchar_t, char16_t, char32_t} and its associated
// std::char_traits)
// * std::string_view
// * All the standard sequence containers (provided the elements are hashable)
// * All the standard associative containers (provided the elements are
// hashable)

12
absl/hash/internal/hash.h
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@@ -516,14 +516,14 @@ H AbslHashValue(H hash_state, const std::shared_ptr<T>& ptr) {
// the same character sequence. These types are:
//
// - `absl::Cord`
// - `std::string` (and std::basic_string<char, std::char_traits<char>, A> for
// any allocator A)
// - `std::string` (and std::basic_string<T, std::char_traits<T>, A> for
// any allocator A and any T in {char, wchar_t, char16_t, char32_t})
// - `absl::string_view` and `std::string_view`
//
// For simplicity, we currently support only `char` strings. This support may
// be broadened, if necessary, but with some caution - this overload would
// misbehave in cases where the traits' `eq()` member isn't equivalent to `==`
// on the underlying character type.
// For simplicity, we currently support only strings built on `char`, `wchar_t`,
// `char16_t`, or `char32_t`. This support may be broadened, if necessary, but
// with some caution - this overload would misbehave in cases where the traits'
// `eq()` member isn't equivalent to `==` on the underlying character type.
template <typename H>
H AbslHashValue(H hash_state, absl::string_view str) {
return H::combine(