Abstract part and a bridging mode to achieve some separation. Such that the two parts separate extension.
Bridge mode is similar strategy mode, except that a series of algorithms that package policy model algorithm can be replaced with each other.
Strategy mode achieve the abstract part and partial separation can be varied independently.
Bridge Package
Import (
"FMT"
)
type interface {// selecting a route Road
Way () String
}
type Trans {// selected transport interface
Transport () String
}
type Resault struct {// create a bridge, there can be various combinations
Road Way
Trans Trans
}
// bridging function
FUNC HowtoSchool (Road Road, Trans Trans) * Resault {
return {& Resault
Way: Road,
Trans: Trans,
}
}
FUNC (the this Resault *) GotoSchool () {
fmt.Println ( "the Choose ", this.way.Way (), this.trans.Transport ()," to School ")
}
1 // instantiate the route
of the type Way1 struct {
}
method // route 1, to realize how to go
func (this * Way1 ) Way () string {
return" [way1] "
}
// select a route, a return route of Example 1
FUNC ChooseWay1 () Road {
return & Way1 {}
}
// instantiate Scheme 2
type Way2 struct {
}
The method of Scheme 2 // realize how to get
FUNC (the this Way2 *) Way () String {
return "[Way2]"
}
// 2 selecting a route, a return route example 2
FUNC ChooseWay2 () Road {
return & Way2 {}
}
// instantiate walking to school
type walk struct {
}
// select walking to school, returns an instance walking
FUNC ChooseWalk () Trans {
return & walk {}
}
// methods implemented walk
FUNC (the this walk *) Transport () String {
return "[walk]"
}
// walking to school examples of the
type Bike struct {
}
// choose to walk to school, returns an instance walking
ChooseBike FUNC () Trans {
return {} & Bike
}
// methods to achieve walk
FUNC (* the this Bike) Transport () String {
return "[Bike]"
}
how := bridge.HowtoSchool(bridge.ChooseWay1(),bridge.ChooseWalk()) how.GotoSchool() how = bridge.HowtoSchool(bridge.ChooseWay2(),bridge.ChooseWalk()) how.GotoSchool() how = bridge.HowtoSchool(bridge.ChooseWay1(),bridge.ChooseBike()) how.GotoSchool() how = bridge.HowtoSchool(bridge.ChooseWay2(),bridge.ChooseBike()) how.GotoSchool()
