Go 字符串基础教程文档
收录于 2023-04-20 00:10:05 · بالعربية · English · Español · हिंदीName · 日本語 · Русский язык · 中文繁體
Go 字符串
Go 字符串是一系列可变宽度的字符。
Go 字符串和文本文件占用更少的内存或磁盘空间。由于 UTF-8 是标准,Go 不需要编码和解码字符串。
Go 字符串是值类型并且不可变。这意味着如果您创建一个字符串,则不能修改该字符串的内容。字符串的初始值默认为空""。
转到字符串示例
package main import ("fmt" "reflect" ) func main() { var x string = "Hello World" fmt.Println(x) fmt.Println(reflect.TypeOf(x)) }
输出:
Hello World string
Go String len() 示例
package main import "fmt" func main() { str := "I love my country" fmt.Println(len(str)) }
输出:
17
去打印 ASCII 示例
package main import "fmt" func main() { fmt.Println("Ascii value of A is ","A"[0]) }
输出:
Ascii value of A is 65
Go String ToUpper() 示例
package main import "fmt" import "strings" func main() { str := "india" fmt.Println(strings.ToUpper(str)) }
输出:
INDIA
Go String ToLower() 示例
package main import "fmt" import "strings" func main() { str := "INDIA" fmt.Println(strings.ToLower(str)) }
输出:
india
Go String HasPrefix() 示例
package main import "fmt" import "strings" func main() { s := "INDIA" fmt.Println(strings.HasPrefix(s,"IN")) }
输出:
true
Go String HasSuffix() 示例
package main import "fmt" import "strings" func main() { s := "INDIA" fmt.Println(strings.HasSuffix(s,"IA")) }
输出:
true
Go String Join() 示例
package main import "fmt" import "strings" func main() { var arr = []string{"a","b","c","d"} fmt.Println(strings.Join(arr,"*")) }
输出:
a*b*c*d
Go String Repeat() 示例
package main import "fmt" import "strings" func main() { var str = "New " fmt.Println(strings.Repeat(str,4)) }
输出:
new New new New
Go String Contains() 示例
package main import "fmt" import "strings" func main() { str:= "Hi...there" fmt.Println(strings.Contains(str,"th")) }
输出:
true
Go String Index() 示例
package main import "fmt" import "strings" func main() { str:= "Hi...there" fmt.Println(strings.Index(str,"th")) }
输出:
5
Go String Count() 示例
package main import "fmt" import "strings" func main() { str:= "Hi...there" fmt.Println(strings.Count(str,"e")) }
输出:
2
Go String Replace() 示例
package main import "fmt" import "strings" func main() { str:= "Hi...there" fmt.Println(strings.Replace(str,"e","Z",2)) }
输出:
Hi...thZrZ
Go String Split() 示例
package main import "fmt" import "strings" func main() { str := "I,love,my,country" var arr []string = strings.Split(str, ",") fmt.Println(len(arr)) for i, v := range arr { fmt.Println("Index : ", i, "value : ", v) } }
输出:
4 Index : 0 value : I Index : 1 value : love Index : 2 value : my Index : 3 value : country
Go String Split() 示例 2
package main import ( "fmt" "strings" ) func main() { fmt.Printf("%q\n", strings.Split("x,y,z", ",")) fmt.Printf("%q\n", strings.Split(" John and Jack and Johnny and Jinn ", "and")) fmt.Printf("%q\n", strings.Split(" abc ", "")) fmt.Printf("%q\n", strings.Split("", "Hello")) }
输出:
["x" "y" "z"] [" John " " Jack " " Johnny " " Jinn"] [" " "a" "b" "c" " "] [""]
Go String Compare() 示例
package main import ( "fmt" "strings" ) func main() { fmt.Println(strings.Compare("a", "b")) fmt.Println(strings.Compare("a", "a")) fmt.Println(strings.Compare("b", "a")) }
输出:
-1 0 1
Go String Trim() 示例
package main import ( "fmt" "strings" ) func main() { fmt.Println(strings.TrimSpace(" \t\n I love my country \n\t\r\n")) }
输出:
I love my country
Go String ContainsAny() 示例
package main import ( "fmt" "strings" ) func main() { fmt.Println(strings.ContainsAny("Hello", "A")) fmt.Println(strings.ContainsAny("Hello", "o & e")) fmt.Println(strings.ContainsAny("Hello", "")) fmt.Println(strings.ContainsAny("", "")) }
输出:
false
true
false
false