TArray Emplace is a function provided in the C++ library that allows for creating and inserting new elements into an array without creating them beforehand. This function is very useful when dealing with complex objects that cannot be copied or moved easily.
For example, consider an array of Point objects:
```c++
#include
struct Point {
int x, y;
Point(int x, int y) : x(x), y(y) {}
};
int main() {
std::array arr{};
// insert a new element using Emplace
arr.emplace(arr.begin(), 0, 0);
// insert a new element at the end of the array
arr.emplace_back(1, 1);
return 0;
}
```
In this example, we create an array of 3 Point objects and then use the Emplace function to create and insert a new Point object at the beginning of the array. We also use the emplace_back function to create and insert a new Point object at the end of the array.
The package/library containing this function is the STL (Standard Template Library), which is a part of the C++ Standard Library.
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