How to Remove Redundant Spaces in Golang Strings?

Removing Redundant Spaces in Golang Strings

In Golang, efficiently removing excessive spaces from strings is a common task. Redundant spaces include leading/trailing whitespace, new-line characters, and even null characters. Additionally, this process should account for international space characters to ensure comprehensive handling.

Using the Strings Package

The strings package offers a convenient solution to address this need. The strings.Fields function splits a string into separate fields based on spaces and other whitespace characters. Utilizing this function, we can easily remove redundant spaces by joining the split fields back together with a single space.

package main

import (
    "fmt"
    "strings"
)

func standardizeSpaces(s string) string {
    return strings.Join(strings.Fields(s), " ")
}

func main() {
    tests := []string{" Hello,   World  ! ", "Hello,\tWorld ! ", " \t\n\t Hello,\tWorld\n!\n\t"}
    for _, test := range tests {
        fmt.Println(standardizeSpaces(test))
    }
}

Output:

Hello, World !
Hello, World !
Hello, World !

In this example, the various input strings with excessive spaces are transformed into clean and standardized forms with only a single space between words.

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