Go语言常用字符串处理方法实例汇总

2024-04-03 20:04:03 28
本文实例汇总了Go语言常用字符串处理方法。分享给大家供大家参考。具体如下：
packagemain

import(

   "fmt"

   "strings"

   //"unicode/utf8"

)

funcmain(){

   fmt.Println("查找子串是否在指定的字符串中")

   fmt.Println("Contains函数的用法")

   fmt.Println(strings.Contains("seafood","foo"))//true

   fmt.Println(strings.Contains("seafood","bar"))//false

   fmt.Println(strings.Contains("seafood",""))   //true

   fmt.Println(strings.Contains("",""))          //true这里要特别注意

   fmt.Println(strings.Contains("我是中国人","我"))    //true

   fmt.Println("")

   fmt.Println("ContainsAny函数的用法")

   fmt.Println(strings.ContainsAny("team","i"))       //false

   fmt.Println(strings.ContainsAny("failure","u&i"))//true

   fmt.Println(strings.ContainsAny("foo",""))         //false

   fmt.Println(strings.ContainsAny("",""))            //false

   fmt.Println("")

   fmt.Println("ContainsRune函数的用法")

   fmt.Println(strings.ContainsRune("我是中国",'我'))//true注意第二个参数，用的是字符

   fmt.Println("")

   fmt.Println("Count函数的用法")

   fmt.Println(strings.Count("cheese","e"))//3

   fmt.Println(strings.Count("five",""))   //before&aftereachruneresult:5,源码中有实现

   fmt.Println("")

   fmt.Println("EqualFold函数的用法")

   fmt.Println(strings.EqualFold("Go","go"))//大小写忽略

   fmt.Println("")

   fmt.Println("Fields函数的用法")

   fmt.Println("Fieldsare:%q",strings.Fields(" foobar baz  "))//["foo""bar""baz"]返回一个列表

   //相当于用函数做为参数，支持匿名函数

   for_,record:=range[]string{"aaa*1892*122","aaa\taa\t","124|939|22"}{

       fmt.Println(strings.FieldsFunc(record,func(chrune)bool{

           switch{

           casech>'5':

               returntrue

           }

           returnfalse

       }))

   }

   fmt.Println("")

   fmt.Println("HasPrefix函数的用法")

   fmt.Println(strings.HasPrefix("NLT_abc","NLT"))//前缀是以NLT开头的

   fmt.Println("")

   fmt.Println("HasSuffix函数的用法")

   fmt.Println(strings.HasSuffix("NLT_abc","abc"))//后缀是以NLT开头的

   fmt.Println("")

   fmt.Println("Index函数的用法")

   fmt.Println(strings.Index("NLT_abc","abc"))//返回第一个匹配字符的位置，这里是4

   fmt.Println(strings.Index("NLT_abc","aaa"))//在存在返回-1

   fmt.Println(strings.Index("我是中国人","中"))    //在存在返回6

   fmt.Println("")

   fmt.Println("IndexAny函数的用法")

   fmt.Println(strings.IndexAny("我是中国人","中"))//在存在返回6

   fmt.Println(strings.IndexAny("我是中国人","和"))//在存在返回-1

   fmt.Println("")

   fmt.Println("Index函数的用法")

   fmt.Println(strings.IndexRune("NLT_abc",'b'))//返回第一个匹配字符的位置，这里是4

   fmt.Println(strings.IndexRune("NLT_abc",'s'))//在存在返回-1

   fmt.Println(strings.IndexRune("我是中国人",'中'))  //在存在返回6

   fmt.Println("")

   fmt.Println("Join函数的用法")

   s:=[]string{"foo","bar","baz"}

   fmt.Println(strings.Join(s,","))//返回字符串：foo,bar,baz

   fmt.Println("")

   fmt.Println("LastIndex函数的用法")

   fmt.Println(strings.LastIndex("gogopher","go"))//3

   fmt.Println("")

   fmt.Println("LastIndexAny函数的用法")

   fmt.Println(strings.LastIndexAny("gogopher","go"))//4

   fmt.Println(strings.LastIndexAny("我是中国人","中"))     //6

   fmt.Println("")

   fmt.Println("Map函数的用法")

   rot13:=func(rrune)rune{

       switch{

       caser>='A'&&r<='Z':

           return'A'+(r-'A'+13)%26

       caser>='a'&&r<='z':

           return'a'+(r-'a'+13)%26

       }

       returnr

   }

   fmt.Println(strings.Map(rot13,"'Twasbrilligandtheslithygopher..."))

   fmt.Println("")

   fmt.Println("Repeat函数的用法")

   fmt.Println("ba"+strings.Repeat("na",2))//banana

   fmt.Println("")

   fmt.Println("Replace函数的用法")

   fmt.Println(strings.Replace("oinkoinkoink","k","ky",2))

   fmt.Println(strings.Replace("oinkoinkoink","oink","moo",-1))

   fmt.Println("")

   fmt.Println("Split函数的用法")

   fmt.Printf("%q\n",strings.Split("a,b,c",","))

   fmt.Printf("%q\n",strings.Split("amanaplanacanalpanama","a"))

   fmt.Printf("%q\n",strings.Split("xyz",""))

   fmt.Printf("%q\n",strings.Split("","BernardoO'Higgins"))

   fmt.Println("")

   fmt.Println("SplitAfter函数的用法")

   fmt.Printf("%q\n",strings.SplitAfter("/home/m_ta/src","/"))//["/""home/""m_ta/""src"]

   fmt.Println("")

   fmt.Println("SplitAfterN函数的用法")

   fmt.Printf("%q\n",strings.SplitAfterN("/home/m_ta/src","/",2)) //["/""home/m_ta/src"]

   fmt.Printf("%q\n",strings.SplitAfterN("#home#m_ta#src","#",-1))//["/""home/""m_ta/""src"]

   fmt.Println("")

   fmt.Println("SplitN函数的用法")

   fmt.Printf("%q\n",strings.SplitN("/home/m_ta/src","/",1))

   fmt.Printf("%q\n",strings.SplitN("/home/m_ta/src","/",2)) //["/""home/""m_ta/""src"]

   fmt.Printf("%q\n",strings.SplitN("/home/m_ta/src","/",-1))//["""home""m_ta""src"]

   fmt.Printf("%q\n",strings.SplitN("home,m_ta,src",",",2))  //["/""home/""m_ta/""src"]

   fmt.Printf("%q\n",strings.SplitN("#home#m_ta#src","#",-1))//["/""home/""m_ta/""src"]

   fmt.Println("")

   fmt.Println("Title函数的用法")//这个函数，还真不知道有什么用

   fmt.Println(strings.Title("herroyalhighness"))

   fmt.Println("")

   fmt.Println("ToLower函数的用法")

   fmt.Println(strings.ToLower("Gopher"))//gopher

   fmt.Println("")

   fmt.Println("ToLowerSpecial函数的用法")

   fmt.Println("")

   fmt.Println("ToTitle函数的用法")

   fmt.Println(strings.ToTitle("loudnoises"))

   fmt.Println(strings.ToTitle("loud中国"))

   fmt.Println("")

   fmt.Println("Replace函数的用法")

   fmt.Println(strings.Replace("ABAACEDF","A","a",2))//aBaACEDF

   //第四个参数小于0，表示所有的都替换，可以看下golang的文档

   fmt.Println(strings.Replace("ABAACEDF","A","a",-1))//aBaaCEDF

   fmt.Println("")

   fmt.Println("ToUpper函数的用法")

   fmt.Println(strings.ToUpper("Gopher"))//GOPHER

   fmt.Println("")

   fmt.Println("Trim 函数的用法")

   fmt.Printf("[%q]",strings.Trim("!!!Achtung!!!","!"))//["Achtung"]

   fmt.Println("")

   fmt.Println("TrimLeft函数的用法")

   fmt.Printf("[%q]",strings.TrimLeft("!!!Achtung!!!","!"))//["Achtung!!!"]

   fmt.Println("")

   fmt.Println("TrimSpace函数的用法")

   fmt.Println(strings.TrimSpace("\t\nalonegopher\n\t\r\n"))//alonegopher

}
希望本文所述对大家的Go语言程序设计有所帮助。
Go语言常用字符串处理方法实例汇总

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