实现接口功能时结构域未更新

Question

例如，如果我们有以下接口：type IRoute interface {    AddChildren(child IRoute)}以下结构：type Route struct {    Alias string `json:"alias"`    Children []Route `json:"children,omitempty"`    Url string `json:"url,omitempty"`}并实现了接口：func (this Route) AddChildren (child globals.IRoute){    this.Children = append(this.Children, child.(Route))}然后在我们的主函数中，如果我们想测试它是行不通的：rSettings := Route{"settings", nil, "/admin/settings"}rSettingsContentTypesNew := models.Route{"new", nil, "/new?type&parent"}rSettingsContentTypesEdit := models.Route{"edit", nil, "/edit/:nodeId"}// Does NOT work - no children is addedrSettingsContentTypes.AddChildren(rSettingsContentTypesNew)rSettingsContentTypes.AddChildren(rSettingsContentTypesEdit)rSettings.AddChildren(rSettingsContentTypes)这确实按预期工作：rSettings := Route{"settings", nil, "/admin/settings"}rSettingsContentTypesNew := models.Route{"new", nil, "/new?type&parent"}rSettingsContentTypesEdit := models.Route{"edit", nil, "/edit/:nodeId"}// However this does indeed workrSettingsContentTypes.Children = append(rSettingsContentTypes.Children,rSettingsContentTypesNew)rSettingsContentTypes.Children = append(rSettingsContentTypes.Children,rSettingsContentTypesEdit)rSettings.Children = append(rSettings.Children,rSettingsContentTypes)我错过了什么？:-)

Answer 1

的接收者func (this Route) AddChildren (child globals.IRoute)是一个值，因此您正在更改Route结构的副本。

将其更改为 func (this *Route) AddChildren (child globals.IRoute)