strings包
阿新 • • 發佈:2021-07-20
目錄
- strings.EqualFold 判斷兩個utf-8編碼字串是否相同
- strings.HasPrefix 判斷s字串是否有字首字串p
- strings.HasSuffix 判斷s字串是否有後綴綴字串p
- strings.Count 判斷s字串有幾個不重複的sep子串
- strings.Contains 判斷s字串是否包含字串p
- strings.ContainsAny 判斷s字串是否包含字元p
- strings.ContainsRune 判斷s字串是否包含指定ASCII碼值
- strings.IndexByte/IndexRune 判斷指定ASCII碼值在s字串中的位置,不存在返回-1
- strings.Index 判斷字串p在s字串出現的位置,不存在返回-1
- strings.IndexAny 字串p中的任一utf-8碼值在s中第一次出現的位置,沒有返回-1
- strings.Title 首字母都改為大寫
- strings.ToLower 所有轉小寫
- strings.ToUpper 所有轉大寫
- strings.Repeat 拷貝n個s字串
- strings.Replace 字串替換
- strings.Trim 返回用p包裹的中間字串
- strings.TrimLeft 去掉左邊包裹
- strings.TrimRight 去掉右邊包裹
- strings.TrimSpace 去掉前後空格
- strings.TrimPrefix 返回去除s可能的字首prefix的字串
- strings.TrimSuffix 返回去除s可能的字尾prefix的字串
- strings.Fields 字串按照空格轉為切片
- strings.Split 切割
- strings.SplitN 切割條件
- strings.Join 字串拼接
strings.EqualFold 判斷兩個utf-8編碼字串是否相同
func main() {
s:="jeff"
t:="jeff"
k:= "chary"
fmt.Println(strings.EqualFold(s,t)) // true
fmt.Println(strings.EqualFold(s,k)) // false
}
strings.HasPrefix 判斷s字串是否有字首字串p
func main() { s:="jeff" fmt.Println(strings.HasPrefix(s,"j")) //true fmt.Println(strings.HasPrefix(s,"e")) //false }
strings.HasSuffix 判斷s字串是否有後綴綴字串p
func main() {
s:="jeff"
fmt.Println(strings.HasSuffix(s,"f")) //true
fmt.Println(strings.HasSuffix(s,"j")) //false
}
strings.Count 判斷s字串有幾個不重複的sep子串
func main() {
s:="hello word jeff"
fmt.Println(strings.Count(s,"f")) // 2
fmt.Println(strings.Count(s,"kkk")) // 0
}
strings.Contains 判斷s字串是否包含字串p
func main() {
s:="hello word jeff"
fmt.Println(strings.Contains(s,"word")) //true
fmt.Println(strings.Contains(s,"kkk")) //false
}
strings.ContainsAny 判斷s字串是否包含字元p
func main() {
s:="hello word jeff"
fmt.Println(strings.ContainsAny(s,"word")) //true
fmt.Println(strings.ContainsAny(s,"kkk")) //false
}
strings.ContainsRune 判斷s字串是否包含指定ASCII碼值
a-z:97-122
A-Z:65-90
0-9:48-57
func main() {
s:="aaa hello word jeff"
fmt.Println(strings.ContainsRune(s,97)) //true
fmt.Println(strings.ContainsRune(s,98)) //false
}
strings.IndexByte/IndexRune 判斷指定ASCII碼值在s字串中的位置,不存在返回-1
a-z:97-122
A-Z:65-90
0-9:48-57
func main() {
s:="hello word jeff aaa"
fmt.Println(strings.IndexByte(s,97)) // 16
fmt.Println(strings.IndexByte(s,'a')) // 16
fmt.Println(strings.IndexByte(s,98)) // -1
}
strings.Index 判斷字串p在s字串出現的位置,不存在返回-1
func main() {
s:="hello word jeff"
fmt.Println(strings.Index(s,"word")) // 6
fmt.Println(strings.Index(s,"h")) // 1
fmt.Println(strings.Index(s,"kkk")) // -1
}
strings.IndexAny 字串p中的任一utf-8碼值在s中第一次出現的位置,沒有返回-1
func main() {
s:="hello word jeff aaa"
fmt.Println(strings.IndexAny(s,"ekkk")) // 1
fmt.Println(strings.IndexAny(s,"kkk")) // -1
}
strings.Title 首字母都改為大寫
func main() {
s:="hello word jeff"
fmt.Println(strings.Title(s)) //Hello Word Jeff
fmt.Println(strings.ToTitle(s)) //Hello Word Jeff 標題版
}
strings.ToLower 所有轉小寫
func main() {
s:="HELLO WORD JEFF"
fmt.Println(strings.ToLower(s)) //hello word jeff
}
strings.ToUpper 所有轉大寫
func main() {
s:="hello word jeff"
fmt.Println(strings.ToUpper(s)) //HELLO WORD JEFF
}
strings.Repeat 拷貝n個s字串
func main() {
s:="hello word jeff"
fmt.Println(strings.Repeat(s,2)) //hello word jeffhello word jeff
}
strings.Replace 字串替換
返回將s中前n個不重疊old子串都替換為new的新字串,如果n<0會替換所有old子串。
func main() {
s:="hello word jeff"
//前面1個"h"替換為“k”
fmt.Println(strings.Replace(s,"h","k",1)) //kello word jeff
//所有的"o"替換為"k"
fmt.Println(strings.Replace(s,"o","k",-1)) //hellk wkrd jeff
}
strings.Trim 返回用p包裹的中間字串
func main() {
s:="!!!hello word jeff !!!"
fmt.Println(strings.Trim(s,"!")) //hello word jeff
}
strings.TrimLeft 去掉左邊包裹
func main() {
s:="!!!hello word jeff !!!"
fmt.Println(strings.TrimLeft(s,"!")) //hello word jeff !!!
}
strings.TrimRight 去掉右邊包裹
func main() {
s:="!!!hello word jeff !!!"
fmt.Println(strings.TrimRight(s,"!")) //!!!hello word jeff
}
strings.TrimSpace 去掉前後空格
func main() {
s:=" hello word jeff "
fmt.Println(strings.TrimSpace(s)) //hello word jeff
}
strings.TrimPrefix 返回去除s可能的字首prefix的字串
func main() {
s:="hello word jeff"
fmt.Println(strings.TrimPrefix(s,"hello")) // word jeff
fmt.Println(strings.TrimPrefix(s,"word")) //hello word jeff
}
strings.TrimSuffix 返回去除s可能的字尾prefix的字串
func main() {
s:="hello word jeff"
fmt.Println(strings.TrimSuffix(s,"jeff")) //hello word
fmt.Println(strings.TrimPrefix(s,"word")) //hello word jeff
}
strings.Fields 字串按照空格轉為切片
func main() {
s:="hello word jeff"
fmt.Println(strings.Fields(s)) //[hello word jeff]
}
strings.Split 切割
func main() {
s:="hello,word,jeff"
fmt.Println(strings.Split(s,",")) //[hello word jeff]
}
strings.SplitN 切割條件
func main() {
s:="hello word jeff"
fmt.Println(strings.SplitN(s,"",3)) //[h e llo word jeff]
}
strings.Join 字串拼接
func main() {
s:= []string{"hello", "word", "jeff"}
fmt.Println(strings.Join(s,",")) //hello,word,jeff
}
var NetworkSql string
for i := range in.Network {
NetworkSql = strings.Join([]string{NetworkSql, strconv.Itoa(in.Network[i])}, ",")
}
NetworkSql = string(NetworkSql)[1:]
func main() {
var k string
s:= []int{1, 2, 3}
for i:= range(s){
k = strings.Join([]string{ k,strconv.Itoa(i)},",")
}
fmt.Println(k) // ,0,1,2
}
選擇了IT,必定終身學習