Assuming that create
and destroy
are free functions (which seems to be the case from the OP’s code snippet) with the following signatures:
Bar* create();
void destroy(Bar*);
You can write your class Foo
like this
class Foo {
std::unique_ptr<Bar, void(*)(Bar*)> ptr_;
// ...
public:
Foo() : ptr_(create(), destroy) { /* ... */ }
// ...
};
Notice that you don’t need to write any lambda or custom deleter here because destroy
is already a deleter.