Apply the specified func to the contained value and return the result as an rvalue optional.
Synopsis
Declared in <bslstl_optional.h>
template<class t_FUNC>
constexpr
auto
transform(t_FUNC&& func) &&;Return Value
optional containing the result of func, or empty if disengaged
Parameters
Name |
Description |
func |
callable invoked with the contained value or when empty |
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