Remove leading and trailing whitespace in Go

In Go, we can use the strings package to remove leading and trailing whitespaces from a string.

To remove leading whitespaces, we can use the strings.TrimLeft() function, which takes two arguments: the string to be trimmed and a string of the characters to be removed. The following example demonstrates this:

package main
import (

    "fmt"

    "strings"

)
func main() {

    str := "   remove leading whitespaces"

    trimmed := strings.TrimLeft(str, " ")

    fmt.Println(trimmed)

}

Output:

remove leading whitespaces

Similarly, we can remove trailing whitespaces using the strings.TrimRight() function, which takes the same arguments as TrimLeft(). For example:

package main
import (

    "fmt"

    "strings"

)
func main() {

    str := "remove trailing whitespaces   "

    trimmed := strings.TrimRight(str, " ")

    fmt.Println(trimmed)

}

Output:

remove trailing whitespaces

Finally, we can remove both leading and trailing whitespaces using the strings.TrimSpace() function, which takes one argument: the string to be trimmed. For example:

package main
import (

    "fmt"

    "strings"

)
func main() {

    str := "  remove both leading and trailing whitespaces   "

    trimmed := strings.TrimSpace(str)

    fmt.Println(trimmed)

}

Output:

remove both leading and trailing whitespaces