Initializing std::array of classes using uniform initialization in C++

24 Oct 2023

To initialize a std::array of classes using uniform initialization, follow these steps:

Include the header file at the beginning of your code:
```
#include <array>
```

Define your class with a constructor:

class MyClass {
public:
 int value;
    
 MyClass(int val) : value(val) {}
};

Use the std::array class and initialize it with the desired values using uniform initialization syntax:
```
std::array<MyClass, 3> myArray{ {1}, {2}, {3} };
```
In this example, we are initializing a std::array called myArray of size 3. Each element of the array is of type MyClass. We are using uniform initialization syntax to initialize the objects of MyClass with different values.

Note the use of double braces {{ }} when initializing the elements of the std::array. This is required because the elements of the array are themselves objects of the class MyClass.

Now you can access the elements of the std::array and their members using the usual array indexing syntax:

int secondValue = myArray[1].value;

Uniform initialization provides a concise and consistent way to initialize arrays of classes and other objects in C++. It helps avoid errors and makes the code more readable.

To learn more about std::array and uniform initialization in C++, you can refer to the following references:

#cplusplus #uniforminitialization