GO语言（一）G语言自虐

 package main

 import . "fmt"  //notice 1

 type testInt func(uint32) bool

 func isOdd(integer uint32) bool {
   if integer% ==  {
     return false
   }
   return true
 }

 func isEven(integer uint32) bool {
   if integer% ==  {
     return true
   }
   return false
 }

 func filter(slice []uint32, f testInt) []uint32 {
   var result []uint32
   for _,value := range slice { //notice 2
     if f(value) {
       result = append(result, value)
     }
   }
   return result
 }

 func main() {
   slice := []uint32 {,,,,,}
   Println( slice)

   odd := filter(slice, isOdd)
   Println("Odd elements of slice are : ", odd)

   even := filter(slice, isEven)
   Println("Even elements of slice are : ", even)
 }

注意点一，引入包的方法；

注意点二，range返回两个值：下标值，数组实际值；