函数式编程.md

封装成对象

type Config struct {
  Protocol string 
  Timeout time.Duration 
  Maxconns int 
  TLS *tls.Config
}

Builder 模式

//使用一个builder类来做包装
type ServerBuilder struct {
  Server
}

func (sb *ServerBuilder) Create(addr string, port int) *ServerBuilder {
  sb.Server.Addr = addr
  sb.Server.Port = port
  //其它代码设置其它成员的默认值
  return sb
}

func (sb *ServerBuilder) WithProtocol(protocol string) *ServerBuilder {
  sb.Server.Protocol = protocol 
  return sb
}

func (sb *ServerBuilder) WithMaxConn( maxconn int) *ServerBuilder {
  sb.Server.MaxConns = maxconn
  return sb
}

func (sb *ServerBuilder) WithTimeOut( timeout time.Duration) *ServerBuilder {
  sb.Server.Timeout = timeout
  return sb
}

func (sb *ServerBuilder) WithTLS( tls *tls.Config) *ServerBuilder {
  sb.Server.TLS = tls
  return sb
}

func (sb *ServerBuilder) Build() (Server) {
  return  sb.Server
}