由于某種原因，我無(wú)法用范圍迭代var sessionStore = make(FileSystemStore)func LsSessionsCommand(_ []string, _ *string, _ *memory.FileSystem){    w := tabwriter.NewWriter(os.Stdout, 1, 1, 1, ' ', 0)    fmt.Fprint(w, "id\tstored time\n")        for key, val := range sessionStore {        // never reaches here        t := time.Unix(val.Stored, 0)        createdTime := fmt.Sprintf("%d:%d %d/%d/%d", t.Hour(), t.Minute(), t.Day(), t.Month(), t.Year())        _, err := fmt.Fprintf(w, "%s\t%s\n", key, createdTime)        if err != nil {            fmt.Printf("unable to list sessions: %v", err)        }    }    err := w.Flush()    if err != nil {        fmt.Printf("unable to list sessions: %v", err)    }}sessionStore的typeFileSystemStoretype FileSystemStore map[string]FileSystemStoreEntrytype FileSystemStoreEntry struct {    FS FileSystem    Stored int64}添加到datasessionStorefunc StashSession(memfs memory.FileSystem, id string) {    s := sessionStore[id]    s.FS = memfs    s.Stored = time.Now().Unix()    memfs.ReplaceFS(memory.CreateMemoryFileSystem().MFileSystem)}讀數(shù)datafunc CollectSession(memfs memory.FileSystem, id string, stashCurrent bool, newid string) {    s := sessionStore[id]    fs := s.FS.MFileSystem    if stashCurrent {        s.FS = memfs    }    memfs.ReplaceFS(fs)}我可以和數(shù)據(jù)，但不能迭代它。當(dāng)我調(diào)用輸出時(shí)，我得到它只是永遠(yuǎn)不會(huì)到達(dá)范圍函數(shù)的主體。readwritesessionStoreLsSessionsCommand()id    stored time我先叫函數(shù)，再叫函數(shù)StashSessionLsSessionsCommand