swift簡單學習之單例

class caibi

dispatch_once(&static.onetaken)

return static.instance!}}

在網上查詢了資料之後發現，呵呵********了

彩筆簡版：

class caibi

return sta.insta}}

精簡版：

class theoneandonlykraken2

}class swiftsingleton

return inner.instance!

}struct inner

}a:class singletonc

dispatch_once(&static.oncetoken)

return static.instance!

}private init()

}b:class singletonb

return static.instance

}private init() }c:

class singletona }1、

import

foundation
class
singleone

2、

import

foundation
class
singletwo
dispatch_once(&singleton.oncetoken,
)return
singleton.single!
}}

3、

import

foundation
//全域性的常量
let single = singlethree()
class
singlethree
}

import

foundation
class
singlefour
return
static.instance
}}

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