Instance new Type (Golang)

Question

Can anyone tell me how to create a new instance of Type from a string? Reflect?

There are examples but they are for the older (pre Go 1 versions) of the language [:(

Answer 1

Factory with predefined constructors can be based on something like:

package main

import (
    "fmt"
)

type Creator func() interface{}

type A struct {
    a int
}

type B struct {
    a bool
}

func NewA() interface{} {
    return new(A)
}

func NewB() interface{} {
    return new(B)
}

func main() {
    m := map[string]Creator{}
    m["A"] = NewA
    m["B"] = NewB
    for k, v := range m {
        fmt.Printf("%v -> %v\n", k, v())
    }
}