Implements the folly::get_exception<Ex>(res) protocol.
Declared in <folly/result/result.h>
template<typename Ex>
rich_ptr_to_underlying_error<Ex const>
get_exception(get_exception_tag_t tag) const noexcept;A pointer to the stored const Ex, or nullptr.
| Name | Description |
|---|---|
| tag | Protocol dispatch tag. |