The Python id() function returns the unique identifier of an object. This identifier is an integer that is guaranteed to be unique and constant for the lifetime of the object. The id() function can be used to compare two objects to see if they are the same object in memory, as two objects with the same value may have different memory addresses. The id() function can also be used to track the lifetime of an object, as the identifier will change if the object is deleted and then recreated. Overall, the id() function is a useful tool for managing memory and tracking objects in Python. Keep reading below to learn how to python id in C++.
Looking to get a head start on your next software interview? Pickup a copy of the best book to prepare: Cracking The Coding Interview!
Python ‘id’ in C++ With Example Code
Python ID in C++
Python is a high-level programming language that is widely used for various purposes. One of the most useful features of Python is its built-in
id() function, which returns the unique identifier of an object. This identifier is an integer that is guaranteed to be unique and constant for the lifetime of the object.
If you are working with C++, you may wonder if there is an equivalent function to Python’s
id(). Fortunately, there is a way to get a similar identifier in C++ using pointers.
In C++, a pointer is a variable that stores the memory address of another variable. This memory address can be used as a unique identifier for the variable. To get the memory address of a variable in C++, you can use the
int x = 42; int* ptr = &x; std::cout << ptr << std::endl;
In this example, we declare an integer variable
x and initialize it to 42. We then declare a pointer variable
ptr and assign it the memory address of
x using the
& operator. Finally, we print the value of
ptr to the console, which will be the memory address of
By using pointers in this way, we can get a unique identifier for a variable in C++. However, it is important to note that this identifier is not guaranteed to be constant for the lifetime of the object, as it can change if the object is moved in memory.
In conclusion, while C++ does not have a built-in function equivalent to Python’s
id(), we can use pointers to get a similar identifier for a variable. By using the memory address of the variable, we can get a unique identifier that can be used for various purposes.
Equivalent of Python id in C++
In conclusion, while Python’s built-in `id()` function provides a convenient way to obtain the unique identifier of an object, C++ does not have an equivalent function. However, C++ provides a way to obtain the memory address of an object using the `&` operator. This memory address can be used as a unique identifier for the object. Additionally, C++ provides the `typeid` operator which can be used to obtain the type information of an object. While the implementation may differ between Python and C++, both languages provide ways to obtain information about objects that can be useful in various programming scenarios.