Go2 (with Generics) experimental. See: https://blog.golang.org/generics-next-step and https://go.googlesource.com/go/+/refs/heads/dev.go2go/README.go2go.md

hoge.go2

  package main

  import "fmt"

  func Print(type T)(s []T) {
    for _, v := range s {
      fmt.Println(v)
    }
  }

  func main() {
    a := []int{1, 2, 3, 4, 5}
    b := []float64{1.1, 2.2, 3.3, 4.4, 5.5}

    Print(a)
    Print(int)(a)
    Print(b)
  }

# setup for your machine

$ cd ~
$ git clone https://go.googlesource.com/go goroot

$ cd ~/goroot/src
$ git checkout dev.go2go
$ ./all.bash

$ export GOPATH=~/goroot
$ export GOROOT=~/goroot

$ vim hoge.go2
# write this gist contents

  package main

  import "fmt"

  func Print(type T)(s []T) {
    for _, v := range s {
      fmt.Println(v)
    }
  }

  func main() {
    a := []int{1, 2, 3, 4, 5}
    b := []float64{1.1, 2.2, 3.3, 4.4, 5.5}

    Print(a)
    Print(int)(a)
    Print(b)
  }

$ go tool go2go run hoge.go2

warning: GOPATH set to GOROOT (/Users/fskmt/goroot) has no effect
1
2
3
4
5
1
2
3
4
5
1.1
2.2
3.3
4.4
5.5