在Go语言中, 字符串不同于其他语言, 例如Java, C ++, python等等。它是一系列可变宽度字符, 其中每个字符都使用UTF-8编码由一个或多个字节表示。你可以使用以下函数列表以不同的方式修剪字符串。所有这些功能都在字符串包下定义, 因此你必须在程序中导入字符串包才能访问这些功能。
1.修剪:此函数用于修剪此函数中指定的所有前导和后缀Unicode代码点的字符串。
语法如下:
func Trim(str string, cutstr string) string
这里, str代表当前字符串, 剪切表示要在给定字符串中修剪的元素。
例子:
// Go program to illustrate
// how to trim a string
package main
import (
"fmt"
"strings"
)
// Main method
func main() {
// Creating and initializing string
// Using shorthand declaration
str1 := "!!Welcome to lsbin !!"
str2 := "@@This is the tutorial of Golang$$"
// Displaying strings
fmt.Println( "Strings before trimming:" )
fmt.Println( "String 1: " , str1)
fmt.Println( "String 2:" , str2)
// Trimming the given strings
// Using Trim() function
res1 := strings.Trim(str1, "!" )
res2 := strings.Trim(str2, "@$" )
// Displaying the results
fmt.Println( "\nStrings after trimming:" )
fmt.Println( "Result 1: " , res1)
fmt.Println( "Result 2:" , res2)
}
输出如下:
Strings before trimming:
String 1: !!Welcome to lsbin !!
String 2: @@This is the tutorial of Golang$$
Strings after trimming:
Result 1: Welcome to lsbin
Result 2: This is the tutorial of Golang
2. TrimLeft:此函数用于修剪字符串的左侧(在函数中指定)Unicode代码点。
语法如下:
func TrimLeft(str string, cutstr string) string
这里, str代表当前字符串, 剪切表示要在给定字符串中修剪的左侧元素。
例子:
// Go program to illustrate how to
// trim left-hand side elements
// from the string
package main
import (
"fmt"
"strings"
)
// Main method
func main() {
// Creating and initializing string
// Using shorthand declaration
str1 := "!!Welcome to lsbin **"
str2 := "@@This is the tutorial of Golang$$"
// Displaying strings
fmt.Println( "Strings before trimming:" )
fmt.Println( "String 1: " , str1)
fmt.Println( "String 2:" , str2)
// Trimming the given strings
// Using TrimLeft() function
res1 := strings.TrimLeft(str1, "!*" )
res2 := strings.TrimLeft(str2, "@" )
// Displaying the results
fmt.Println( "\nStrings after trimming:" )
fmt.Println( "Result 1: " , res1)
fmt.Println( "Result 2:" , res2)
}
输出如下:
Strings before trimming:
String 1: !!Welcome to lsbin **
String 2: @@This is the tutorial of Golang$$
Strings after trimming:
Result 1: Welcome to lsbin **
Result 2: This is the tutorial of Golang$$
3. TrimRight:此函数用于修剪字符串的右侧(在函数中指定)Unicode代码点。
语法如下:
func TrimRight(str string, cutstr string) string
这里, str代表当前字符串, 剪切表示要在给定字符串中修剪的右侧元素。
例子:
// Go program to illustrate how to
// trim right-hand side elements
// from the string
package main
import (
"fmt"
"strings"
)
// Main method
func main() {
// Creating and initializing the
// string using shorthand declaration
str1 := "!!Welcome to lsbin **"
str2 := "@@This is the tutorial of Golang$$"
// Displaying strings
fmt.Println( "Strings before trimming:" )
fmt.Println( "String 1: " , str1)
fmt.Println( "String 2:" , str2)
// Trimming the given strings
// Using TrimRight() function
res1 := strings.TrimRight(str1, "!*" )
res2 := strings.TrimRight(str2, "$" )
// Displaying the results
fmt.Println( "\nStrings after trimming:" )
fmt.Println( "Result 1: " , res1)
fmt.Println( "Result 2:" , res2)
}
输出如下:
Strings before trimming:
String 1: !!Welcome to lsbin **
String 2: @@This is the tutorial of Golang$$
Strings after trimming:
Result 1: !!Welcome to lsbin
Result 2: @@This is the tutorial of Golang
4. TrimSpace:此函数用于修剪指定字符串中的所有前导和尾随空白。
语法如下:
func TrimSpace(str string) string
例子:
// Go program to illustrate how to
// trim white space from the string
package main
import (
"fmt"
"strings"
)
// Main method
func main() {
// Creating and initializing string
// Using shorthand declaration
str1 := " **Welcome to lsbin** "
str2 := " ##This is the tutorial of Golang## "
// Displaying strings
fmt.Println( "Strings before trimming:" )
fmt.Println(str1, str2)
// Trimming white space from the given strings
// Using TrimSpace() function
res1 := strings.TrimSpace(str1)
res2 := strings.TrimSpace(str2)
// Displaying the results
fmt.Println( "\nStrings after trimming:" )
fmt.Println(res1, res2)
}
输出如下:
Strings before trimming:
**Welcome to lsbin** ##This is the tutorial of Golang##
Strings after trimming:
**Welcome to lsbin** ##This is the tutorial of Golang##
5. TrimSuffix:此方法用于从给定字符串中修剪尾随后缀字符串。如果给定的字符串不包含指定的后缀字符串, 则此函数将返回原始字符串, 而不进行任何更改。
语法如下:
func TrimSuffix(str, suffstr string) string
这里, str代表原始字串, 后缀代表后缀字符串。
例子:
// Go program to illustrate how to
// trim a suffix string from the
// given string
package main
import (
"fmt"
"strings"
)
// Main method
func main() {
// Creating and initializing string
// Using shorthand declaration
str1 := "Welcome, lsbin"
str2 := "This is the, tutorial of Golang"
// Displaying strings
fmt.Println( "Strings before trimming:" )
fmt.Println( "String 1: " , str1)
fmt.Println( "String 2:" , str2)
// Trimming suffix string from the given strings
// Using TrimSuffix() function
res1 := strings.TrimSuffix(str1, "lsbin" )
res2 := strings.TrimSuffix(str2, "Hello" )
// Displaying the results
fmt.Println( "\nStrings after trimming:" )
fmt.Println( "Result 1: " , res1)
fmt.Println( "Result 2:" , res2)
}
输出如下:
Strings before trimming:
String 1: Welcome, lsbin
String 2: This is the, tutorial of Golang
Strings after trimming:
Result 1: Welcome, Result 2: This is the, tutorial of Golang
6. TrimPrefix:此方法用于从给定字符串中修剪前导前缀字符串。如果给定的字符串不包含指定的前缀字符串, 则此函数将返回原始字符串, 而不进行任何更改。
语法如下:
func TrimPrefix(str, suffstr string) string
这里, str代表原始字串, 后缀代表前缀字符串。
例子:
// Go program to illustrate how to
// trim the prefix string from the
// given string
package main
import (
"fmt"
"strings"
)
// Main method
func main() {
// Creating and initializing string
// Using shorthand declaration
str1 := "Welcome, lsbin"
str2 := "This is the, tutorial of Golang"
// Displaying strings
fmt.Println( "Strings before trimming:" )
fmt.Println( "String 1: " , str1)
fmt.Println( "String 2: " , str2)
// Trimming prefix string from the given strings
// Using TrimPrefix() function
res1 := strings.TrimPrefix(str1, "Welcome" )
res2 := strings.TrimPrefix(str2, "Hello" )
// Displaying the results
fmt.Println( "\nStrings after trimming:" )
fmt.Println( "Result 1: " , res1)
fmt.Println( "Result 2: " , res2)
}
输出如下:
Strings before trimming:
String 1: Welcome, lsbin
String 2: This is the, tutorial of Golang
Strings after trimming:
Result 1: , lsbin
Result 2: This is the, tutorial of Golang