interface/example1/sensor/sensor.go

@@ -1,12 +0,0 @@
-package sensor
-
-type Sensor interface {
-	Add()
-	Delete()
-	Update()
-	Search()
-}
-
-func AddSensor(s Sensor) {
-	s.Add()
-}

interface/example1/sensor/sensorimpl/ftp.go

@@ -1,30 +0,0 @@
-package sensorimpl
-
-import (
-	"fmt"
-	"golanglearn/interface/example1/sensor"
-)
-
-type Ftp struct {
-	Name string
-}
-
-func (f *Ftp) Add() {
-	fmt.Println("ftp sensor", f.Name)
-}
-
-func (f *Ftp) Delete() {
-	panic("implement me")
-}
-
-func (f *Ftp) Update() {
-	panic("implement me")
-}
-
-func (f *Ftp) Search() {
-	panic("implement me")
-}
-
-func NewFtp(name string) sensor.Sensor {
-	return &Ftp{Name: name}
-}

interface/example1/sensor/sensorimpl/rtsp.go

@@ -1,30 +0,0 @@
-package sensorimpl
-
-import (
-	"fmt"
-	"golanglearn/interface/example1/sensor"
-)
-
-type Rtsp struct {
-	Name string
-}
-
-func (r *Rtsp) Add() {
-	fmt.Println("add sensor", r.Name)
-}
-
-func (r *Rtsp) Delete() {
-	panic("implement me")
-}
-
-func (r *Rtsp) Update() {
-	panic("implement me")
-}
-
-func (r *Rtsp) Search() {
-	panic("implement me")
-}
-
-func NewRtsp(name string) sensor.Sensor {
-	return &Rtsp{Name: name}
-}

interface/main.go

@@ -1,13 +0,0 @@
-package main
-
-import (
-	"golanglearn/interface/example1/sensor"
-	"golanglearn/interface/example1/sensor/sensorimpl"
-)
-
-func main() {
-	rtsp1 := sensorimpl.NewRtsp("xxx")
-	sensor.AddSensor(rtsp1)
-	ftp1 := sensorimpl.NewFtp("ftp")
-	sensor.AddSensor(ftp1)
-}

waitgroup/example2/main.go

@@ -1,35 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"strconv"
-	"sync"
-	"time"
-)
-
-/*
-限制并发数量的用法
-*/
-func main() {
-	wg := sync.WaitGroup{}
-	// 最多允许的并发数量
-	limit := make(chan struct{}, 20)
-	for i := 0; i < 100; i++ {
-		wg.Add(1)
-		limit <- struct{}{}
-		go func(num int) {
-			defer func() {
-				<-limit
-				wg.Done()
-			}()
-			dosth(num)
-		}(i)
-	}
-	wg.Wait()
-}
-
-func dosth(i int) {
-	fmt.Println("do sth-->", strconv.Itoa(i))
-	// 模拟耗时1s
-	time.Sleep(time.Second)
-}

waitgroup/example2/readme.md

@@ -1 +0,0 @@
-> 用waitgroup限制并发数量的用法