What is the difference between:
std::shared_ptr<int> p1 = std::shared_ptr<int>(new int);
and
std::shared_ptr<int> p2 = (std::shared_ptr<int>) new int;
Which is better and why?
Add a comment
|
1 Answer
Neither. This one is strictly preferable:
auto p3 = std::make_shared<int>();
(Although it has slightly different semantics, since it initializes the int object, unlike your code.)
This version is subexpression-wise correct, doesn't contain the red-flag word "new", and also uses a more efficient allocation scheme.
