Create slice filtering some condition from array

CreateSliceWithSomeConditionFromArray.go

package main

import "fmt"

func main() {
	s := []int{2, 3, 5, 7, 11, 13}
	printSlice(s)

	// https://github.com/golang/go/wiki/SliceTricks#filtering-without-allocating
	ns := s[:0]
	for _, v := range s {
		if v % 3 == 2 {
			ns = append(ns, v)
		}
	}
	printSlice(ns)
}

func printSlice(s []int) {
	fmt.Printf("len=%d cap=%d %v\n", len(s), cap(s), s)
}