Golang的学习心得1

package controllers
import (
 "github.com/astaxie/beego"
)
type ApiController struct {
 beego.Controller
}
//预处理方法,这个函数主要是为了用户扩展用的,这个函数会在下面定义的这些Method方法之前执行,用户可以重写这个函数实现类似用户验证之类。
func (a *ApiController)Prepare(){
 a.Ctx.WriteString("This is the Prepare Method")
}
//Beego 是支持resetful 的,对号入座
func (a *ApiController)Get() {
 a.Ctx.WriteString("This is the Get Method")
}
func (a *ApiController)Post() {
 a.Ctx.WriteString("This is the Post Method")
}
func (a *ApiController)Delete() {
 a.Ctx.WriteString("This is the Delete Method")
}
func (a *ApiController)Put() {
 a.Ctx.WriteString("This is the Put Method")
}
func (a *ApiController)Head() {
 a.Ctx.WriteString("This is the Head Method")
}
func (a *ApiController)Options() {
 a.Ctx.WriteString("This is the Head Methodn")
}
//这个函数实在执行完相应的http Method方法之后执行的,默认是空,
// 用户可以在子Strcut中重写这个函数,执行例如数据库关闭,清理数据之类的工作
func (a *ApiController)Finish() {
 a.Ctx.WriteString("This is the Head Finish")
}

package main
import "fmt"
func main(){
 x := []int{1,2,3}
 i := 0
 i,x[i] =2,i
 fmt.Println(i,x)//输出的是 2 【0 2 3】
}

Dep is a tool for managing dependencies for Go projects
Usage: "dep [command]"
Commands:
init Set up a new Go project, or migrate an existing one
status Report the status of the project's dependencies
ensure Ensure a dependency is safely vendored in the project
version Show the dep version information
check Check if imports, Gopkg.toml, and Gopkg.lock are in sync
Examples:
dep init set up a new project
dep ensure install the project's dependencies
dep ensure -update update the locked versions of all dependencies
dep ensure -add github.com/pkg/errors add a dependency to the project
Use "dep help [command]" for more information about a command.