如何转换Observable <observable <organization> []＆gt;到Observable <organization []>？

Question

我正在使用ngrx / store

.map((p: Observable<Organization>[]) => {
        return new usersActions.GetOrganizationSuccess(p);
      })

GetOrganizationSuccess操作将Organization []作为有效负载

如何将（p）从Observable<Organization>[]转换为Organization[]？