func RandomStringPure(length int) (result string) {
	buf := make([]byte, length)
	if _, err := rand.Read(buf); err == nil {
		result = string(buf)
	}
	return
}
// RandomStringPure returns a random characters string for you.
RandomStringPure returns a random characters string for you.
// RandomStringPure returns a random characters string for you .
func RandomStringPure(length int) (result string) {
	buf := make([]byte, length)
	if _, err := rand.Read(buf); err == nil {
		result = string(buf)
	}
	return
}
func RandomStringPure ( length int ) ( result string ) { buf := make ( [ ] byte , length ) if _ , err := rand . Read ( buf ) ; err == nil { result = string ( buf ) } return }
RandomStringPure returns a random characters string for you.
RandomStringPure returns a random characters string for you .