zhanglun/UUID.md

Created September 4, 2015 13:23

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UUID（版本4）的形式为：

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

其中，x 是任意十六进制字符，y 是 8,9,a,b,A,B 其中之一。它的正则表达式可以写作：

/[a-f0-9]{8}-[a-f0-9]{4}-4[a-f0-9]{3}-[89aAbB][a-f0-9]{3}-[a-f0-9]{12}/

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