diff options
Diffstat (limited to 'absl/types/variant.h')
| -rw-r--r-- | absl/types/variant.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/absl/types/variant.h b/absl/types/variant.h index 2f78722f..28aaef4f 100644 --- a/absl/types/variant.h +++ b/absl/types/variant.h @@ -399,9 +399,9 @@ constexpr absl::add_pointer_t<const T> get_if( // Calls a provided functor on a given set of variants. `absl::visit()` is // commonly used to conditionally inspect the state of a given variant (or set // of variants). -// Requires: The expression in the Effects: element shall be a valid expression -// of the same type and value category, for all combinations of alternative -// types of all variants. Otherwise, the program is ill-formed. +// +// The functor must return the same type when called with any of the variants' +// alternatives. // // Example: // @@ -414,6 +414,7 @@ constexpr absl::add_pointer_t<const T> get_if( // }; // // // Declare our variant, and call `absl::visit()` on it. +// // Note that `GetVariant()` returns void in either case. // absl::variant<int, std::string> foo = std::string("foo"); // GetVariant visitor; // absl::visit(visitor, foo); // Prints `The variant's value is: foo' |