Generic Functions in Go

Question

I\'m in the process of learning Go and the documentation and interactive lessons say that an empty interface can hold any type, as it requires no a

Answer 1

Not that you can use generic in production as of now (as of 2nd Oct 2020) but for people interested in the upcoming go generics feature, with the latest design draft of go, you can write a generic function Print as below

package main

import (
    "fmt"
)

// T can be any type. Compilation will fail if T is not iterable.
func Print[T any](s []T) {
    for _, v := range s {
        fmt.Print(v)
    }
}

func main() {
    // Passing list of string works
    Print([]string{"Hello, ", "world\n"})

    // You can pass a list of int to the same function as well
    Print([]int{1, 2})
}

Output:

Hello, world
12