GoLang: Working with map in Anynomous structs-CodePudding

I am trying to understand how to use maps in anonymous structs.

My code is as below

places := struct {
      Country map[string][]string
    }{
      make(map[string][]string)["india"] :=  []string{"Chennai", "Hyderabad", "Kolkata" }
    }

I tried with new()with initialization with no success.

is it possible to use maps inside anonymous structs ?

Thank you.

CodePudding user response：

Use a composite literal:

places := struct {
    Country map[string][]string
}{
    Country: map[string][]string{"india": {"Chennai", "Hyderabad", "Kolkata"}},
}

Or, if you want to use make, you can do so with multiple statements:

places := struct {
    Country map[string][]string
}{
    Country: make(map[string][]string),
}
places.Country["india"] = []string{"Chennai", "Hyderabad", "Kolkata"}

// or

places := struct { Country map[string][]string }
places.Country = make(map[string][]string)
places.Country["india"] = []string{"Chennai", "Hyderabad", "Kolkata"}

CodePudding user response：

This should work: https://goplay.space/#gfSDLS79AHB

package main

import (
    "fmt"
)

func main() {

    places := struct {
        Country map[string][]string
    }{
        Country: map[string][]string{"india": {"Chennai", "Hyderabad", "Kolkata"}},
    }

    fmt.Println("places =", places)
}