标签：blog ar 使用 sp div on 问题 log 代码
class SwiftSingleton {
class var shared: SwiftSingleton {
if !Inner.instance {
Inner.instance = SwiftSingleton()
}
return Inner.instance!
}
struct Inner {
static var instance: SwiftSingleton?
}
}
Inner.instance = SwiftSingleton()
class SwiftSingleton {
class var shared: SwiftSingleton {
dispatch_once(&Inner.token) {
Inner.instance = SwiftSingleton()
}
return Inner.instance!
}
struct Inner {
static var instance: SwiftSingleton?
static var token: dispatch_once_t = 0
}
}
标签：blog ar 使用 sp div on 问题 log 代码
原文地址：http://www.cnblogs.com/xumaple/p/4056372.html
