GoLang桥接模式的实现示例

type computer interface {
 
    print()
 
    setPrinter(printer)
}

import "fmt"
 
type windows struct {
    printer printer
}
 
func (w *windows) print() {
    fmt.Println("Print request for windows")
    w.printer.printFile()
}
 
func (w *windows) setPrinter(p printer) {
    w.printer = p
}

import "fmt"
 
type mac struct {
    printer printer
}
 
func (m *mac) print() {
    fmt.Println("Print request for mac")
    m.printer.printFile()
}
 
func (m *mac) setPrinter(p printer) {
    m.printer = p
}

type printer interface {
    printFile()
}

import "fmt"
 
type epson struct {
}
 
func (p *epson) printFile() {
    fmt.Println("Printing by a EPSON Printer")
}

type hp struct {
}
 
func (p *hp) printFile() {
    fmt.Println("Printing by a HP Printer")
}

func main() {
    hpPrinter := &hp{}
    epsonPrinter := &epson{}
    macComputer := &mac{}
    macComputer.setPrinter(hpPrinter)
    macComputer.print()
    fmt.Println()
    macComputer.setPrinter(epsonPrinter)
    macComputer.print()
    fmt.Println()
    winComputer := &windows{}
    winComputer.setPrinter(hpPrinter)
    winComputer.print()
    fmt.Println()
    winComputer.setPrinter(epsonPrinter)
    winComputer.print()
    fmt.Println()
}