Assigning map of slices in a struct in Golang

Question

How to correctly assign a map of slices to a struct in Golang? I tried to following, but it does not work:

package main

import (
    "fmt"
)

type Test struct {
    name     string
    testCase map[string][]string
}

var t = Test{
    name: "myTest",
    testCase: map[string][]string{"key": {"value1", "value2"}}
}

func main() {

    fmt.Println(t)
}

.\main.go:14:61: syntax error: unexpected newline, expecting comma or }

understand the error message, missing a trailing ,. Add it — Inian
– Inian, Commented Sep 10, 2022 at 8:47
Got it, thanks. Didn't expect that, because there was nothing following. — royskatt
– royskatt, Commented Sep 10, 2022 at 8:49

Nopal · Accepted Answer · 2022-09-10 08:49:20Z

1

You have to add its type as a prefix when you assign the value.

type Test struct {
    name     string
    testCase map[string][]string
}

var t = Test{
    name: "myTest",
    testCase: map[string][]string{
        "key": {"value1", "value2"},
    },
}

Don't forget to add comma separator at the end of the item, since its use vertical style map

Reference

answered Sep 10, 2022 at 8:49

Nopal

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