Multiple return types in golang

In the Go programming language, it is not possible to have multiple return types for a function. Go functions can only have a single return type. This is in contrast to some other programming languages like C, where it is possible to have multiple return types.

In Go, if you want to return multiple values from a function, you can use the concept of "tuple return" or "multiple return values". This allows you to return multiple values of different types as a single result. The syntax for this is to specify the return types in parentheses, separated by commas.

Here is an example of a Go function that returns multiple values:

func calculate(x, y int) (int, int) {
    return x + y, x * y
}

In this example, the calculate function takes two integer arguments x and y, and it returns the sum of x and y as the first return value, and the product of x and y as the second return value.

To call this function and get the multiple return values, you can use the following syntax:

sum, product := calculate(3, 4)

In this example, the sum variable will be assigned the value 7, and the product variable will be assigned the value 12.

By using this technique, you can effectively achieve a similar result to having multiple return types in other programming languages. However, it's important to note that these multiple return values are still treated as a single result in Go, and not as separate return types.