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What is the escape character in Go language

Jan 17, 2023 pm 04:30 PM
golang go language

在Go语言中,转义字符是一种特殊的字符常量,以反斜线"\"开头,后跟一个或几个字符,具有不同于字符原有的意义。所谓转义,可以理解为 “采用某些方式暂时取消该字符本来的含义”,这里的 “某种方式” 指的就是在指定字符前添加反斜杠“\”,以此来表示对该字符进行转义。

What is the escape character in Go language

本教程操作环境:windows7系统、GO 1.18版本、Dell G3电脑。

Go语言中转义符是什么

转义字符是一种特殊的字符常量。转义字符以反斜线"\"开头,后跟一个或几个字符。转义字符具有特定的含义,不同于字符原有的意义,故称“转义”字符。

在编程中有一些字符是打不出来的,比如换行,提示音,下一个制表位等等,于是程序语言的开发者就设计了转义序列(escape sequence)这种东西用来表达这些字符。

所谓转义,可以理解为 “采用某些方式暂时取消该字符本来的含义”,这里的 “某种方式” 指的就是在指定字符前添加反斜杠 \,以此来表示对该字符进行转义。

Go语言常用转义字符

转义字符 说明
\t 表示一个制表符,通常使用它可以排版
\n 换行符
\ 一个\
" 一个"
\r 一个回车

转义字符的案例

Go语言制表符

Go 语言 制表符的转义字符为 \t

package main
import "fmt"
func main() {
    fmt.Println("Hello world")
fmt.Println("Hello \tworld")
}
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程序运行,控制台输出,如下图:

What is the escape character in Go language

Go语言换行符

Go 语言换行符的转义字符为 \n

package main
import "fmt"
func main() {
    fmt.Println("Hello world")
fmt.Println("Hello \nworld")
}
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What is the escape character in Go language

Go语言反斜杠

Go语言反斜杠的转义字符为 \\

package main
import "fmt"
func main() {
    fmt.Println("Hello world")
fmt.Println("Hello \world")  //Error
}
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What is the escape character in Go language

我们可以看到,我们想在程序中输出单个反斜杠的时候,使用单个反斜杠程序会直接报错,我们需要使用双反斜杠来进行转义。我们将程序修改如下:

package main
import "fmt"
func main() {
    fmt.Println("Hello world")
fmt.Println("Hello \\world")  
}
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What is the escape character in Go language

Go语言双引号

Go语言双引号的转义字符为 \"

package main
import "fmt"
func main() {
    fmt.Println("Hello world")
fmt.Println("Hello \"world")  
}
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程序运行,控制台输出,如下图:

What is the escape character in Go language

【相关推荐:Go视频教程编程教学

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