例如，
package mainimport ( "fmt" "strings")func main() { s := "t Hello, Worldn " fmt.Printf("%d %qn", len(s), s) t := strings.TrimSpace(s) fmt.Printf("%d %qn", len(t), t)}输出：
16 "t Hello, Worldn "12 "Hello, World"
例如，
package mainimport ( "fmt" "strings")func main() { s := "t Hello, Worldn " fmt.Printf("%d %qn", len(s), s) t := strings.TrimSpace(s) fmt.Printf("%d %qn", len(t), t)}输出：
16 "t Hello, Worldn "12 "Hello, World"
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