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| author | Vitaly Goldshteyn <goldvitaly@google.com> | 2024-03-06 02:38:50 -0800 |
|---|---|---|
| committer | Copybara-Service <copybara-worker@google.com> | 2024-03-06 02:39:47 -0800 |
| commit | 6bf3c73fdfeb62733d2a0f81b9846ff77f3a3b9f (patch) | |
| tree | 674d88886bca7c1407310a8d6691c07c6902413e /absl/functional/overload.h | |
| parent | 8dc90ff07402cd027daec520bb77f46e51855889 (diff) | |
| download | abseil-6bf3c73fdfeb62733d2a0f81b9846ff77f3a3b9f.tar.gz abseil-6bf3c73fdfeb62733d2a0f81b9846ff77f3a3b9f.tar.bz2 abseil-6bf3c73fdfeb62733d2a0f81b9846ff77f3a3b9f.zip | |
Document and test ability to use absl::Overload with generic lambdas.
PiperOrigin-RevId: 613141617
Change-Id: Ife68495d4a5951b734db7407fb99686cf45a5133
Diffstat (limited to 'absl/functional/overload.h')
| -rw-r--r-- | absl/functional/overload.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/absl/functional/overload.h b/absl/functional/overload.h index 4651f14b..732795fc 100644 --- a/absl/functional/overload.h +++ b/absl/functional/overload.h @@ -35,7 +35,14 @@ // [](double) -> absl::string_view { return "double"; }), // v) == "int"); // -// Note: This requires C++17. +// One of the lambda may specify overload for several types via generic lambda. +// +// absl::variant<std::string, int32_t, int64_t> v(int32_t{1}); +// assert(std::visit(absl::Overload( +// [](const std::string& s) { return s.size(); }, +// [](const auto& s) { return sizeof(s); }), v) == 4); +// +// Note: absl::Overload requires C++17. #ifndef ABSL_FUNCTIONAL_OVERLOAD_H_ #define ABSL_FUNCTIONAL_OVERLOAD_H_ |