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| import Foundation
/// 前缀类型
//前缀类型
struct Swifter<Base> {
let base: Base
init(_ base: Base) {
self.base = base
}
}
//利用协议扩展属性
protocol SwifterProtocol {}
extension SwifterProtocol {
var swifter: Swifter<Self> {
set { }
get {
return Swifter(self)
}
}
static var swifter: Swifter<Self>.Type {
set { }
get { Swifter<Self>.self }
}
}
//给字符串扩展功能
extension String: SwifterProtocol {}
extension NSString: SwifterProtocol {}
//extension NSMutableString: SwifterProtocol {}
//给Person扩展功能
class Person{}
extension Person: SwifterProtocol {}
// 扩展功能
extension Swifter where Base: ExpressibleByStringLiteral {
var numberCount: Int {
var count = 0
for c in (base as! String) where ("0"..."9").contains(c) {
count += 1
}
return count
}
static func test() {
print("test")
}
mutating func run() {
// self.base = "run"
}
}
extension Swifter where Base: Person {
func run() {
print("跑")
}
}
print("123ooo123".swifter.numberCount)
Person().swifter.run()
String.swifter.test()
var abc = "123"
var def: NSMutableString = "456"
abc.swifter.run()
print(abc)
def.swifter.run()
/////////////////////////
protocol ArrayType {
}
extension Array: ArrayType{}
extension NSArray: ArrayType{}
extension String: ArrayType{}
func isArrayType(_ type: Any.Type) -> Bool {
type is ArrayType.Type
}
print(isArrayType([Int].self))
print(isArrayType([Any].self))
print(isArrayType(NSArray.self))
print(isArrayType(NSMutableArray.self))
print(isArrayType(String.self))
|