375 - Did you know C++26 added support constexpr placement new?

README.md

@@ -14,6 +14,7 @@
 
 > C++26
 
+* [Did you know C++26 added support constexpr placement new?](https://github.com/tip-of-the-week/cpp/blob/master/tips/375.md)
 * [Did you know that C++26 added `= delete("should have a reason")`?](https://github.com/tip-of-the-week/cpp/blob/master/tips/371.md)
 * [Did you know that C++26 added `span.at`?](https://github.com/tip-of-the-week/cpp/blob/master/tips/370.md)
 * [Did you know about C++26 simd proposal (1/N)?](https://github.com/tip-of-the-week/cpp/blob/master/tips/367.md)

tips/375.md

@@ -0,0 +1,25 @@
+<details open><summary>Info</summary><p>
+
+* **Did you know C++26 added support constexpr placement new?
+
+  * https://wg21.link/P2747
+
+</p></details><details open><summary>Example</summary><p>
+
+```cpp
+static_assert([] {
+  std::array<int, 1024> storage{};
+  auto ptr = new (storage.data()) int{42};
+  return 42 == *ptr;
+}());
+
+static_assert([] {
+  std::array<int, 1024> storage{};
+  auto ptr = std::construct_at<int>(storage.data(), 42);
+  return 42 == *ptr;
+}());
+```
+
+> https://godbolt.org/z/61Kcjz1s6 
+
+</p></details>