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我试图寻找一些关于像golang结构标记属性标签,我没有发现任何关于在SWIFT我们至少有别的选择吗?斯威夫特3属性标签
Golang STRUCT:
struct {
microsec uint64 "field 1"
serverIP6 uint64 "field 2"
process string "field 3"
}
我试图寻找一些关于像golang结构标记属性标签,我没有发现任何关于在SWIFT我们至少有别的选择吗?斯威夫特3属性标签
Golang STRUCT:
struct {
microsec uint64 "field 1"
serverIP6 uint64 "field 2"
process string "field 3"
}
有在夫特容易获得没有这样的属性的标签;对于关于雨燕提供声明和类型属性的详细信息,请参阅:
如果我们专注于运行时反省,但是,你可以使用Mirror
structure来打印你的类型的属性名称,如下:
struct Foo {
let microsec: UInt64 //"field 1"
let serverIP6: UInt64 // "field 2"
let process: String // "field 3"
init(_ microsec: UInt64, _ serverIP6: UInt64, _ process: String) {
self.microsec = microsec
self.serverIP6 = serverIP6
self.process = process
}
}
let foo = Foo(100, 999, "foo")
Mirror(reflecting: foo).children.forEach { print($0.0 ?? "no field name") }
/* microsec
serverIP6
process */
如果你所提到的属性标签的唯一目的是利用Mirror
运行时自省,那么你就可以实现自己的自定义Mirror
你的类型,通过符合CustomReflectable
protocol,适合你的内省的目的。在这个自定义实现中,你可以用你自己的字段替换默认的属性名称。例如: -
struct Foo {
let microsec: UInt64 //"field 1"
let serverIP6: UInt64 // "field 2"
let process: String // "field 3"
init(_ microsec: UInt64, _ serverIP6: UInt64, _ process: String) {
self.microsec = microsec
self.serverIP6 = serverIP6
self.process = process
}
}
extension Foo : CustomReflectable {
var customMirror: Mirror {
return Mirror(self, children: [
"field 1" : "\(microsec)",
"field 2" : "\(serverIP6)",
"field 3" : process
])
}
}
let foo = Foo(100, 999, "foo")
Mirror(reflecting: foo).children
.forEach { print($0.0 ?? "no field name", $0.1) }
/* field 1 100
field 2 999
field 3 foo */
感谢您的回答,dfri。 – eduardo
@eduardo乐意帮忙! – dfri