Can a Golang function return multiple values?

Yes, Go functions can return multiple values ​​by returning a tuple, which is an immutable value that can contain different types of data.

#Can a Go function return multiple values?

Go functions can return multiple values ​​by returning a tuple. A tuple is an immutable value that can contain different types of data.

Syntax:

func functionName() (returnType1, returnType2, ..., returnTypeN) {
  // ...
  return value1, value2, ..., valueN
}

Example:

func getMinMax(numbers []int) (int, int) {
  min := numbers[0]
  max := numbers[0]
  for _, n := range numbers {
    if n < min {
      min = n
    }
    if n > max {
      max = n
    }
  }
  return min, max
}

Let us use a practical case to demonstrate how to use return multiple values Function:

Case: Find the maximum and minimum value in an array

package main

import "fmt"

func getMinMax(numbers []int) (int, int) {
  min := numbers[0]
  max := numbers[0]
  for _, n := range numbers {
    if n < min {
      min = n
    }
    if n > max {
      max = n
    }
  }
  return min, max
}

func main() {
  numbers := []int{1, 3, 5, 2, 4}
  min, max := getMinMax(numbers)
  fmt.Println("Minimum:", min)
  fmt.Println("Maximum:", max)
}

Output:

Minimum: 1
Maximum: 5

In this case, The getMinMax function returns a tuple containing the minimum and maximum values ​​in the array. The main function then gets the returned value by unpacking the tuple.

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