Using The Return Keyword in Go

In simple terms, return is a keyword in Go that is used to end the execution of a function and return a value to the caller of the function.

When a function is executed, it may perform some computations or modify some data, but at some point, it may need to provide a result back to the caller of the function. This is where return comes in.

To use return in Go, you simply write the keyword return followed by the value that you want to return. Here’s an example:

	func add(x, y int) int {
    return x + y
	}

• In this example, we define a function called add that takes two integer arguments x and y. The function returns the sum of x and y using the return keyword followed by the expression x + y

You can also use return to exit a function early if some condition is met. For example:

func divide(x, y float64) (float64, error) {
  if y == 0 {
    return 0, fmt.Errorf("division by zero")
  }
  return x / y, nil
}

In this example, we define a function called divide that takes two float64 arguments x and y. The function checks if y is zero, and if it is, it returns an error using the return keyword followed by the error message.

If y is not zero, the function returns the result of dividing x by y using the return keyword followed by the expression x / y and nil to indicate that there is no error.