Convert a string to an array in Go [duplicate]

If your string is JSON (as comments suggest) that has top-level list of objects of same type; you can use encoding/json from standard library to parse and simply unmarshal it into a slice of your Go struct type like this:

package main

import (
    "encoding/json"
    "fmt"
)

type Data struct {
    Name string
    Foo []string `json:"foo"`
}

func main() {
    // Unmarshall to slice
    var data []Data

    // Your string with list of objects
    input := `[{"name": "first", "foo":["item1", "item2", "item3"]}, {"name": "second", "foo":["item5", "item6"]}]`
    
    err := json.Unmarshal([]byte(input), &data)
    if err != nil {
        panic(err)
    }
    fmt.Println(data)
}

I recommend reading JSON and Go which pretty much explains how to read JSON and in Go.