std::unique_ptr<T,Deleter>::operator bool
From cppreference.com
< cpp | memory | unique ptr
explicit operator bool()constnoexcept; | (since C++11) (constexpr since C++23) | |
Checks whether *this owns an object, i.e. whether get()!=nullptr.
Contents |
[edit]Parameters
(none)
[edit]Return value
true if *this owns an object, false otherwise.
[edit]Example
Run this code
#include <iostream>#include <memory> int main(){std::unique_ptr<int> ptr(new int(42)); if(ptr)std::cout<<"before reset, ptr is: "<<*ptr <<'\n'; ptr.reset();(ptr ?(std::cout<<"after reset, ptr is: "<<*ptr):(std::cout<<"after reset ptr is empty"))<<'\n';}
Output:
before reset, ptr is: 42 after reset ptr is empty
[edit]See also
| returns a pointer to the managed object (public member function) |
