Use the strings.Trim function to remove the specified character set from the beginning and end of a string

Use the strings.Trim function to remove the specified character set at the beginning and end of the string

In the Go language, the strings.Trim function is a very practical function that can remove the specified character set at the beginning and end of the string, making the string More neat and organized. This article will introduce how to use the strings.Trim function and show some code examples.

First let’s take a look at the prototype of the strings.Trim function:

func Trim(s string, cutset string) string

This function accepts two parameters, the first The parameter is the string to be processed, and the second parameter is the character set to be removed. The return value of the function is the new string after removing the specified character set.

The following is a sample code using the strings.Trim function:

package main

import (
    "fmt"
    "strings"
)

func main() {
    str := "-Hello, World!-"
    cutset := "-! "

    newStr := strings.Trim(str, cutset)
    fmt.Println(newStr)
}

In the above code, we define a character slice str, which contains some additional characters, such as '-' and '!' and spaces. We set the character set cutset to be removed to "-!", so that these characters at the beginning and end of the string can be removed.

Run the above code, the output result is "Hello, World". It can be seen that after removing the character set "-!", the '-', '!' and spaces at the beginning and end of the string were successfully removed.

In actual development, we often need to remove some special characters in strings, such as spaces, newlines, etc. This function can be easily achieved using the strings.Trim function.

The following is another sample code:

package main

import (
    "fmt"
    "strings"
)

func main() {
    str := "   Hello,   World!   "
    cutset := " "

    newStr := strings.Trim(str, cutset)
    fmt.Println(newStr)
}

Run the above code, the output result is "Hello, World!". As you can see, the space characters are successfully removed, but the spaces in the middle of the string are retained.

When using the strings.Trim function, it should be noted that this function will only remove the specified character set at the beginning and end of the string, and will not remove the characters in the middle of the string.

In addition, if the character set to be removed appears inside the string, it will not be removed. Only the characters that appear at the beginning and end of the string will be removed. This is a detail that needs attention.

Summary:

This article introduces how to use the strings.Trim function in the Go language to remove the specified character set at the beginning and end of a string, and gives some practical code examples. Using the strings.Trim function can very conveniently remove special characters from a string, making the string more tidy and standardized. In actual development, we often need to process strings, and using the strings.Trim function can improve our development efficiency. Hope this article can be helpful to you.

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