Method WriteString

util/buffer.go:153–155

(a string)

	b.Malloc(1)[0] = v
}
func (b *Buffer) WriteString(a string) {
	*b = append(*b, a...)
}
func (b *Buffer) Write(a []byte) (n int, err error) {
	l := b.Len()
	newL := l + len(a)