http://en.cppreference.com/w/cpp/language/storage_duration Static local variables Static variables declared at block scope are initialized the first time control passes through their declaration (unle
這是從文檔,部分Failable Initializers for Classes: class Product {
let name: String!
init?(name: String) {
self.name = name
if name.isEmpty { return nil }
}
}
if let bowTie =
所以我在要求model_path功能的初始化延伸String使用: class String
def foo(bar)
...
link_to(baz, baz_path(baz))
end
end
因此,要得到它的工作我添加 include Rails.application.routes.url_helpers
問題現在我甚至無法查看網站,因爲
這裏是我的代碼: public class A<T : Any> {
public init(n : Int) {
print("A")
}
}
public class B : A<Int> {
}
public class C : B {
}
let x = C(n: 123)
這種失敗的編譯和破口大罵這樣的錯誤: repl.swift:9:9: