# Functions
GenerateRandomKey method generates the random bytes for given length using `crypto/rand`.
GenerateRandomKeybm method generates the random bytes for given length using `math/rand.Source` and byte mask.
生成随机数字.
IsBlank checks if a string is empty ("") or whitespace.
格式 1076459955600494592.
RandomString method generates the random string for given length using `crypto/rand`.
RandomStringbm method generates the random string for given length using `math/rand.Source` and byte mask.
Remove removes all occurrences of a substring from within the source string.
Repeat returns a new string consisting of count copies of the string s.
Replace returns a copy of the string s with the first n non-overlapping instances of old replaced by new.
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时间订单号 年两位,天三位,时分秒6位,毫秒6位 (17位 + 随机数).