package main
import (
"fmt"
)
var (
//声明并初始化一个整数管道
intchan = make(chan int, 3)
mapchan = make(chan map[string]string, 2)
//intList = make([] int, 0)
intslice = []int{10, 20, 30}
num01 int
)
type Dog struct {
name string
age int
}
func intChanRW() {
//管道写
for _, v := range intslice {
intchan <- v
}
//统计管道内值有多少个
fmt.Printf("chan value--> %d, chan cap--> %d\n", len(intchan), cap(intchan))
//管道读，管道是按照先进先出的顺序来的，跟栈的顺序是反的。
num01 = <-intchan
//正常返回是10
fmt.Println(num01)
//再次查看管道值数量多少。
fmt.Printf("chan value--> %d, chan cap--> %d\n", len(intchan), cap(intchan))
//再次循环
var chanSlice []int
chanSlice = make([]int, 0)
countChan := len(intchan)
//管道数据读取后，添加至切片
for i := 1; i <= countChan; i++ {
chanSlice = append(chanSlice, <-intchan)
}
fmt.Println(chanSlice)
fmt.Printf("chan value--> %d, chan cap--> %d\n", len(intchan), cap(intchan))
}
func mapChanRW() {
//伪map数据结构
map1 := make(map[string]string, 2)
map2 := make(map[string]string, 2)
map1["name"] = "tom"
map1["home"] = "beijing"
map2["name"] = "xm"
map2["home"] = "shanghai"
//把map写入管道
mapchan <- map1;
mapchan <- map2
fmt.Printf("mapchan value--> %d\n", len(mapchan))
//取出跟intchan一样
//......
}
func stuBlChanRW() {
stuBlchan := make(chan Dog, 10)
dog01 := Dog{"xf", 3}
stuBlchan <- dog01
fmt.Println("=================")
var s Dog
s = <-stuBlchan
fmt.Println(s.name, s.age)
}
func main() {
intChanRW()
mapChanRW()
stuBlChanRW()
}
遍历和关闭
package main
import "fmt"
func clo() {
strchan := make(chan string, 3)
strchan <- "aa"; strchan <- "bb"
//关闭管道后是不能写的，只能读
close(strchan)
//写报错
//strchan <- "aa"
//读可以
s := <- strchan
fmt.Println(s)
}
func forc() {
intChan := make(chan int, 100)
for i:=1; i<=100; i++{
intChan <- i * 3
}
close(intChan)
for v := range intChan{
fmt.Printf("chan value --> %d\n", v)
}
}
func main() {
clo()
forc()
}
