golang初识5 - interface

1. interface-new

(1) abstract

format:

type abstractName interface {
    method_name1 [return_type]
}

(2) implment

1) species

format:

type structName struct {
  // body
}

2) method

format:

func (instanceName structName) method_name1()[return_type] {
  // body
}

(3) Instantiation

format:

var variable_name abstractName

variable_name = new(structName)

1) invoke

variable_name.method_name1()

Reference:

http://www.runoob.com/go/go-interfaces.html