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%2 == 0 {
    return false
  }
  return true
}

func isEven(integer uint32) bool {
  if integer%2 == 0 {
    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 {1,2,3,4,5,7}
  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；