How to cut in golang (three methods)

Go language is a modern and efficient programming language. Many developers often encounter situations where they need to cut strings at work. This article will introduce how to separate strings in Golang.

The first method: strings.Split()

We can use the built-in strings package to split a string. The package provides the Split() function, which receives two Parameters: The first parameter is the string to be separated, and the second parameter is the specified separator. The return value is a slice, and the elements in the slice are delimited strings.

Sample code:

package main

import (
    "fmt"
    "strings"
)

func main() {
    str := "a,b,c,d,e"
    arr := strings.Split(str, ",")
    fmt.Println(arr)
}

Output result:

[a b c d e]

Second method: regexp package

If you need to separate strings based on complex patterns, Regular expressions can be used. The regexp package of Go language provides regular expression-related functions.

Sample code:

package main

import (
    "fmt"
    "regexp"
)

func main() {
    str := "foo&%$bar##baz"
    re := regexp.MustCompile(`[&%$#]+`)
    arr := re.Split(str, -1)
    fmt.Println(arr)
}

Output result:

[foo bar baz]

In the above code, the Split() function is used to separate strings based on regular expressions.

The third method: strings.Fields()

The strings.Fields() function can separate the string into a slice by spaces. If the string contains multiple consecutive spaces, It will only count as one space.

Sample code:

package main

import (
    "fmt"
    "strings"
)

func main() {
    str := "This is a string   with extra spaces"
    arr := strings.Fields(str)
    fmt.Println(arr)
}

Output result:

[This is a string with extra spaces]

Summary

Through the above three methods, we can easily perform string conversion in Golang Separate operations. In actual development, we can choose the appropriate method according to the actual situation to achieve efficient and concise code implementation.

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