在golang中连接多个切片

Question

I'm trying to merge multiple slices as follows,

package routes

import (
    "net/http"
)

type Route struct {
    Name        string
    Method      string
    Pattern     string
    Secured     bool
    HandlerFunc http.HandlerFunc
}

type Routes []Route

var ApplicationRoutes Routes

func init() {
    ApplicationRoutes = append(
        WifiUserRoutes,
        WifiUsageRoutes,
        WifiLocationRoutes,
        DashboardUserRoutes,
        DashoardAppRoutes,
        RadiusRoutes,
        AuthenticationRoutes...
    )
}

However the builtin append() is capable of appending two slices, hence it throws too many arguments to append at compile time. Is there an alternative function to achieve the task? or is there a better way to merge the slices?

Answer 1

append operates on individual elements, not on entire slices. Append each slice in a loop

routes := []Routes{
    WifiUserRoutes,
    WifiUsageRoutes,
    WifiLocationRoutes,
    DashboardUserRoutes,
    DashoardAppRoutes,
    RadiusRoutes,
    AuthenticationRoutes,
}

var ApplicationRoutes []Route
for _, r := range routes {
    ApplicationRoutes = append(ApplicationRoutes, r...)
}