3 ways to trim whitespace (or other characters) from a string

yourbasic.org/golang

Use the strings.TrimSpace function to remove leading and trailing whitespace as defined by Unicode.

s := strings.TrimSpace("\t Goodbye hair!\n ")
fmt.Printf("%q", s) // "Goodbye hair!"

To remove other leading and trailing characters, use strings.Trim.
To remove only the leading or the trailing characters, use strings.TrimLeft or strings.TrimRight.

Further reading