我正在尝试使用通用协议并注入具体实现,但我收到以下错误:Protocol 'Repo' can only be used as a generic constraint because it has Self or associated type requirements
let repo: Repo
我的代码
protocol Repo{
associatedtype T
func doSomething() -> T
}
class MyRepo: Repo{
func doSomething() -> String{
return "hi"
}
}
class SomeClass {
let repo: Repo
init(repo: Repo) {
self.repo = repo
repo.doSomething()
}
}
class EntryPoint{
let someClass: SomeClass
init(){
someClass = SomeClass(repo: MyRepo)
}
}
首先调用入口点并设置依赖关系树。
答案 0 :(得分:4)
我认为你要找的是这样的:
protocol Repo {
associatedtype T
func doSomething() -> T
}
class MyRepo: Repo{
func doSomething() -> String{
return "hi"
}
}
class SomeClass<A: Repo> {
let repo: A
init(repo: A) {
self.repo = repo
_ = repo.doSomething()
}
}
class EntryPoint{
let someClass: SomeClass<MyRepo>
init(){
someClass = SomeClass<MyRepo>(repo: MyRepo())
}
}