Notes. Only non-const unique_ptr can transfer the ownership of the managed object to another unique_ptr. If an objects lifetime is managed by a const std unique_ptr it is limited to the scope in which the pointer was created.A const std unique_ptr cannot be transferred limiting the lifetime of the managed object to the scope in which the pointer was created. When the unique_ptr is destroyed it
This code effectively removes the first and last elements of the vector that pointed to even integers. Note that since stdunique_ptr cant be copied but only moved the fact that this code compiles shows that stdremove_if doesnt copy the elements of the collection but rather moves them around.In addition to managing the pointed objects lifetime unique_ptr provides the other expected capabilities of a smart pointer it overloads operator and operator- provides a means to obtain the raw pointer (get) to relinquish control of the pointed object (release) and to replace the object it manages (reset).How to Create and Use unique_ptr Instances. 11192018 2 minutes to read Contributors. all In this article. A unique_ptr does not share its pointer. It cannot be copied to another unique_ptr passed by value to a function or used in any C Standard Library algorithm that requires copies to be made.
unique_ptr objects replicate a limited pointer functionality by providing access to its managed object through operators and - (for individual objects) or operator  (for array objects). For safety reasons they do not support pointer arithmetics and only support move assignment (disabling copy Stack Exchange network consists of 175 Q&A communities including Stack Overflow the largest most trusted online community for developers to learn share their knowledge and build their careers.