Go Regular expression

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Go Regular Expression Daquan

Ackage Test

Import (
"FMT"
"RegExp"
)

Func regixbase () {
Findtest ()
Findindextest ()
Findstringtest ()
Findchinesstring ()
Findnumorlowerletter ()
Findandreplace ()
}

Incoming []byte, return []byte
Func findtest () {
str: = "Ab001234hah120210a880218end"
Reg: = RegExp. Mustcompile ("\d{6}")//six-bit sequential number
Fmt. Println ("--find--")
Returns the first string in str that matches a reg
Data: = Reg. Find ([]byte (str))
Fmt. Println (String (data))

fmt.Println("------FindAll------")  //返回str中所有匹配reg的字符串  //第二个参数表示最多返回的个数，传-1表示返回所有结果  dataSlice := reg.FindAll([]byte(str), -1)  for _, v := range dataSlice {      fmt.Println(string(v))  }  

}

Incoming []byte, return to the first-last position index
Func findindextest () {
Fmt. Println ("--findindex--")
Returns the first end of a matched string
REG2: = RegExp. Mustcompile ("Start\d*end")//start start, end ends, all numbers in the middle
STR2: = "00start123endhahastart120psend09start10000end"
Index[0] Indicates the start position, index[1] indicates the end position
Index: = reg2. FindIndex ([]byte (STR2))
Fmt. Println ("Start:", Index[0], ", End:", index[1], str2[index[0]:index[1]])

fmt.Println("------FindAllIndex------")  //返回所有匹配的字符串首末位置  indexSlice := reg2.FindAllIndex([]byte(str2), -1)  for _, v := range indexSlice {      fmt.Println("start:", v[0], ",end:", v[1], str2[v[0]:v[1]])  }  

}

String passed in, returns string (more convenient)
Func findstringtest () {
Fmt. Println ("--findstring--")

str := "ab001234hah120210a880218end"  reg := regexp.MustCompile("\\d{6}") //六位连续的数字  fmt.Println(reg.FindString(str))  fmt.Println(reg.FindAllString(str, -1))  //以下两个方法是类似的  fmt.Println(reg.FindStringIndex(str))  fmt.Println(reg.FindIndex([]byte(str)))  

}

Find Chinese characters
Func findchinesstring () {
str: = "Hello china Hello World Peace Hi Good"
Reg: = RegExp. Mustcompile ("[\p{han}]+")
Fmt. Println (Reg. Findallstring (str,-1))

//[中国 世界和平 好]  

}

Find numbers or lowercase letters
Func Findnumorlowerletter () {
str: = "Haha00azbapabc09fgabhy99"
Reg: = RegExp. Mustcompile ("[\d|a-z]+")
Fmt. Println (Reg. Findallstring (str,-1))

//[00az abc09 ab 99]  

}

Find and replace
Func Findandreplace () {
str: = "Welcome for Beijing-tianjin CRH train."
Reg: = RegExp. Mustcompile ("")
Fmt. Println (Reg. Replaceallstring (str, "@"))//Replace the space with the @ character

//Welcome@for@Beijing-Tianjin@CRH@train.  

}