GO：数组/切片为常规字符串

Question

I am sort of new to golang, and also kind of new to programming. And go has been very hard for me. This is one thing that always confuses me: data types. If you run this(not on the playground) then it will spit out:

./main.go:40: cannot use recorded (type string) as type SVC in append

and if I reverse the values in the append call, it will spit out:

./main.go:40: first argument to append must be slice; have string

What I am trying to do is grab all of the stuff in the home directory, append all of the values with the modifications to an array, then put the array into a file using ioutil. All I want(as of now) is to append the values to the slice in func record. Can anybody help?

package main

import "os"
import "io/ioutil"
import "fmt"

type SVC struct {
        key string
        val string
}

func main() {
        os.Chdir("../../../../../../..")
        var data, err = ioutil.ReadDir("home")
        checkerr(err)
        for _, data := range data {
                fmt.Println(data.Name())
        }
        os.Chdir("home/beanboybunny/repos/bux/go/src/bux")
}
func checkerr(err1 error) {
        if err1 != nil {
                fmt.Println("error")
        }
}
func writer(dataname string) {
        f := "var "
        uname := dataname
        q := " = VVC{
"
        w := "  bux: 1,
"
        e := "  op: true,
"
        c := "}" 

        b2 := f + uname + q + w + e + c 
        record(b2)
}

func record(recorded string) {
        cache := []SVC{}
        record SVC := recorded 
        appenda := append(cache, recorded)
}

Answer 1

Your type SVC struct has two private string fields. If you just want an array of strings you don't need the SVC type.

If you're just trying to build an array of strings with your specially formatted transform of the items in the home directory, here is a start showing the use of append and format strings: https://play.golang.org/p/eUKTKRxwfp

package main

import (
    "fmt"
    "io/ioutil"
    "os"
    "strings"
)

func main() {
    os.Chdir("../../../../../../..")
    var data, err = ioutil.ReadDir("home")
    checkerr(err)
    lines := []string{}
    for _, data := range data {
        fmt.Println(data.Name())
        lines = append(lines, buildLine(data.Name()))
    }
    fmt.Println(strings.Join(lines, "
"))
    os.Chdir("home/beanboybunny/repos/bux/go/src/bux")
}

func checkerr(err1 error) {
    if err1 != nil {
        fmt.Printf("error: %v", err1)
    }
}

func buildLine(dataname string) string {
    return fmt.Sprintf("var %s = VVC{
 bux: 1,
 op: true,
}", dataname)
}