Pomelo Lee workspace

wget https://dl.google.com/go/go1.13.4.linux-amd64.tar.gz
 
mkdir -p /usr/local/golang/opt/
 
tar -C /usr/local/golang/opt/ -zxvf go1.13.4.linux-amd64.tar.gz 
 
mkdir -p /usr/local/golang/repos/gopath/

vi /etc/profile
 
export GOROOT=/usr/local/golang/opt/go
export GOPATH=/usr/local/golang/repos/gopath
export PATH=$PATH:$GOROOT/bin
 
 
source /etc/profile
 
go version

 cd /usr/local/golang/repos/gopath
 
 vi hello.go
 
package main
 
import "fmt"
 
func main(){
  fmt.Printf("hello,world\n");
}

go run hello.go 
 
go build hello.go 
./hello

mkdir -p $GOPATH/src/golang.org/x/
cd $GOPATH/src/golang.org/x/
yum install git
git clone https://github.com/golang/net.git net
go install net

timedatectl set-timezone Asia/Shanghai

import("fmt"
	"time")
func main(){
	t := time.Now()
	zero_tm := time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, t.Location()).Unix()
	fmt.Println(zero_tm)
}

package main
 
import (
    "fmt"
    "time"
)
 
func main() {
    i := 10000
    for j := 0; j < 3; j++ {
        // 使用多协程处理，其中可以预见的是除数为0会抛出异常
        go divide(i, j)
    }
 
    // 为了保证前面线程运行完，这里休眠一下
    for {
        time.Sleep(1 * time.Second)
    }
}
 
func divide(i, j int) {
    // 定义recover方法，在后面程序出现异常的时候就会捕获
    defer func() {
        if r := recover(); r != nil {
            // 这里可以对异常进行一些处理和捕获
            fmt.Println("Recovered:", r)
        }
    }()
 
    fmt.Println(i / j)
}