check_element_existence.go

import "fmt"

func main() {
  // create an array of strings
  slice := []string{"apple", "grapes", "mango"}
  // You can check by changing element to "orange"
  if Contains(slice, "mango") { 
    fmt.Println("Slice contains element")
  } else {
    fmt.Println("Slice doesn't contain element")
  }
}

func Contains(slice []string, element string) bool {
   for _, i := range slice {
     if i == element {
       return true
     }
   }
   return false
}


output:
Slice contains element