Question

How to use enum in Go

Answer 1

package main

import "fmt"

type Base int

const (
    A Base = iota
    B
    C
    D
)

func main() {

    var base Base
    base = C

    if (base == C) {
      fmt.Println(base)
    }
}



/*
run:

2

*/

 

70+ SQL courses for beginners and professionals

Answer 2

package main
  
import "fmt"
  
type Base int
  
const (
    A Base = 1 << iota
    B
    C
    D
    E
)
  
func main() {
  
    var base Base
    
    base = A
    fmt.Println(base)
     
    base = B
    fmt.Println(base)
     
    base = C
    fmt.Println(base)
     
    base = D
    fmt.Println(base)
     
    base = E
    fmt.Println(base)
}
  
  
  
  
/*
run:
  
1
2
4
8
16
  
*/

 

70+ SQL courses for beginners and professionals

Answer 3

package main
  
import "fmt"
  
type Base int
  
const (
    A Base = iota * 3
    B
    C
    D
    E
)
  
func main() {
  
    var base Base
    
    base = A
    fmt.Println(base)
     
    base = B
    fmt.Println(base)
     
    base = C
    fmt.Println(base)
     
    base = D
    fmt.Println(base)
     
    base = E
    fmt.Println(base)
}
  
  
  
  
/*
run:
  
0
3
6
9
12
  
*/

 

70+ SQL courses for beginners and professionals

Answer 4

package main
 
import "fmt"
 
type Base float64
 
const (
    A = iota * 3
    B 
    C 
    D = iota * 1.35
    E
    F
)
 
func main() {
 
    var base Base
    
    base = A
    fmt.Println(base)
    
    base = B
    fmt.Println(base)
    
    base = C
    fmt.Println(base)
    
    base = D
    fmt.Println(base)
    
    base = E
    fmt.Println(base)
    
    base = F
    fmt.Println(base)
}
 
 
 
 
/*
run:
 
0
3
6
4.05
5.4
6.75
 
*/

 

70+ SQL courses for beginners and professionals