@@ -4,6 +4,7 @@ title: "in_place_t, in_place_type_t, in_place_index_t"
 ms.date: 11/13/2024
 f1_keywords: ["utility/utility<in_place_t>", "utility/std::in_place_t", "utility/utility<in_place_type_t>", "utility/std::in_place_type_t", "utility<in_place_index_t>", "utility/std::in_place_index_t"]
 helpviewer_keywords: ["utility<in_place_t> struct", "utility<in_place_type_t> struct", "utility::in_place_type_t struct", "utility<in_place_index_t> struct", "utility::in_place_index_t struct"]
+ai-usage: ai-assisted
 ---
 # `in_place_t`, `in_place_type_t`, `in_place_index_t` struct
 
@@ -40,28 +41,19 @@ template <size_t I>
 inline constexpr in_place_index_t<I> in_place_index{};
 ```
 
-## Requirements
-
-**Header:** `<utility>`
-
-**Namespace:** `<utility>`
-
-**Compiler Option:** [`/std:c++17`](../build/reference/std-specify-language-standard-version.md) or later.
-
-
 ## Parameters
 
-*I*\
-The index where the object will be created in place.
+*`I`*\
+The index where the object is created in place.
 
-*T*\
-The type of object to create in place.
+*`T`*\
+The type of object to create.
 
 ## Remarks
 
-- `in_place_t` indicates in-place construction of an object.
-- `in_place_type_t` indicates in-place construction of an object of a specific type.
-- `in_place_index_t` indicates in-place construction of an object at a specific index.
+- `in_place_t` indicates in-place construction of an object. Use this to create objects in place inside a `std::optional` or `std::variant`.
+- `in_place_type_t` indicates in-place construction of an object of a specific type. This is useful with `std::any` because `std::any` can hold any kind of type, so we need to specify the type it will hold.
+- `in_place_index_t` indicates in-place construction of an object at a specific index. Use this with `std::variant` to specify the index where the object is created.
 
 The following are some types that use these structs in their constructors: `expected` class, [`optional` class](optional-class.md), [`single_view` class](single-view-class.md), [`any` class](any-class.md) or [`variant` class](variant-class.md).
 
@@ -78,30 +70,27 @@ The following are some types that use these structs in their constructors: `expe
 struct MyStruct
 {
     int value;
-    MyStruct(int v) : value(v)
-    {
-    }
+    MyStruct(int v) : value(v) {}
 };
 
 int main()
 {
-    // Uses std::in_place to construct an integer directly inside opt
+    // Construct a MyStruct directly inside opt
     std::optional<MyStruct> opt(std::in_place, MyStruct(42));
 
-    // Construct a MyStruct object inside various objects
+    // Construct a MyStruct object inside an any object
     std::any a(std::in_place_type<MyStruct>, MyStruct(314));
 
-    // Construct a MyStruct object inside a vector object at index 0
+    // Construct a MyStruct object inside a vector at index 0
     std::variant<MyStruct> v(std::in_place_index<0>, MyStruct(271));
 
-
     if (opt)
     {
         std::cout << opt->value << ", ";
     }
 
     std::cout << std::any_cast<MyStruct>(a).value << ", "
-              << std::get<0>(v).value << std::endl;
+              << std::get<0>(v).value;
 
     return 0;
 }
@@ -110,3 +99,10 @@ int main()
 ```output
 42, 314, 271
 ```
+## Requirements
+
+**Header:** `<utility>`
+
+**Namespace:** `<utility>`
+
+**Compiler Option:** [`/std:c++17`](../build/reference/std-specify-language-standard-version.md) or later.
@@ -123,7 +123,7 @@ If *rhs* contains a value, direct initializes the contained value as if using `s
 
 ## <a name="optional-destructor"></a> ~optional destructor
 
-Destroys any non-trivially destructible contained value, if one is present, by invoking its destructor.
+Destroys any nontrivially destructible contained value, if one is present, by invoking its destructor.
 
 ```cpp
 ~optional();