Question

How to calculate the number of day in specific month with Go

Answer 1

package main
    
import (
    "fmt"
    "time"
)
 
func Date(year, month, day int) time.Time {
    return time.Date(year, time.Month(month), day, 0, 0, 0, 0, time.UTC)
}
    
func main() {
    dt := Date(2020, 8, 0) // month before 
     
    fmt.Println(dt)        
     
    fmt.Println(dt.Day())  
}
 
 
   
   
/*
run:
   
2020-07-31 00:00:00 +0000 UTC
31
   
*/

 

70+ SQL courses for beginners and professionals

Answer 2

package main
   
import (
    "fmt"
    "time"
)

func Date(year, month, day int) time.Time {
    return time.Date(year, time.Month(month), day, 0, 0, 0, 0, time.UTC)
}
   
func main() {
    dt := Date(2020, 3, 0) // month before 
    
    fmt.Println(dt)        
    
    fmt.Println(dt.Day())  
}


  
  
/*
run:
  
2020-02-29 00:00:00 +0000 UTC
29
  
*/

 

70+ SQL courses for beginners and professionals