import (
"fmt"
"reflect"
"time"
)
//输入参数是个函参且函参函数没有输入参数
func GoFunc1(f func()) {
go f()
}
//输入参数第1个是个函参且函参函数只有1个接口型输入值，第2参数是函参函数的输入参数
func GoFunc2(f func(interface{}),i interface{}) {
go f(i)
}
//输入参数第1个是接口参数类型,第2个输入参数是变参类型
func GoFunc3(i interface{},args ...interface{}) {
if len(args) > 1 {
//接口 i 调用函数格式满足func(...interface{})，输入参数格式是变参类型，那么满足这样条件的函数只有f3符合
go i.(func(...interface{}))(args)
} else if len(args) == 1 {
//接口 i 调用函数格式满足func(interface{})，输入参数格式只有1个接口类型，那么满足这样条件的函数只有f2符合
go i.(func(interface{}))(args[0])
} else {
//接口 i 调用函数格式满足func()，没有输入参数的格式，那么满足这样条件的函数只有f1符合
go i.(func())()
}
}
//没有输入参数的函数
func f1() {
fmt.Println("f1 has been run completely.")
}
//输入参数是只有1个接口的函数
func f2(i interface{}) {
//多选语句switch要先知到它是几个类型中的一个,i.(type)只能在switch中使用,这函数没有返回值
switch i.(type) {
case string:
//是字符时做的事情
fmt.Println(i," is type of string in f2")
case int:
//是整数时做的事情
fmt.Println(i," is type of int in f2")
default:
fmt.Println("无法识别类型：",i) //例如输入1个布尔值
}
//反射这个方法可以对任意对象使用
fmt.Println("f2 has been run completely,",i,"真实的对象类型:",reflect.TypeOf(i))
}
//变参函数是参数个数和类型都不确定的函数
func f3(args ...interface{}) {
fmt.Println("f3 has been run completely,"args length = ",len(args),args[0] = ",args[0],args[0] Type = ",reflect.TypeOf(args[0]))
for _,arg := range args[0].([]interface{}) {
switch v := arg.(type) {
case int:
fmt.Println(v," is type of int in f3")
case int32:
fmt.Println(v," is type of int32 in f3")
case int64:
fmt.Println(v," is type of int64 in f3")
case bool:
fmt.Println(v," is type of bool in f3")
case string:
fmt.Println(v," is type of string in f3")
case float32:
fmt.Println(v," is type of float32 in f3")
case float64:
fmt.Println(v," is type of float64 in f3")
default:
fmt.Println(v," data type has been not yet supported,reflect.TypeOf = ",reflect.TypeOf(v)," in f3")
}
}
fmt.Println("===================================================================")
for _,arg := range args[0].([]interface{}) {
fmt.Println("Value = ",arg," reflect.TypeOf = ",reflect.TypeOf(arg)," in f3")
}
fmt.Println("===================================================================")
}
func main() {
GoFunc3(f3,"moxi","moxi?",19861206,3.1415927)
GoFunc1(f1)
GoFunc2(f2,1<<20)
GoFunc3(f1)
GoFunc3(f2,"So in Love")
GoFunc3(f2,true)
//阻塞主进程5秒后结束，也就是所有的协程只有5秒代码的执行时间，
//不管这些协程有没有处理完工作，将退出整个程序
time.Sleep(500 * time.Second)
}
调试控制台打印输出如下信息：
2017/07/01 12:49:13 server.go:73: Using API v1 2017/07/01 12:49:13 debugger.go:97: launching process with args: [/root/code/go/src/contoso.org/book/debug] API server listening at: 127.0.0.1:2345 2017/07/01 12:49:13 debugger.go:505: continuing f3 has been run completely,args length = 1,args[0] = [moxi moxi? 19861206 3.1415927],args[0] Type = []interface {} moxi is type of string in f3 moxi? is type of string in f3 19861206 is type of int in f3 3.1415927 is type of float64 in f3 =================================================================== Value = moxi reflect.TypeOf = string in f3 Value = moxi? reflect.TypeOf = string in f3 Value = 19861206 reflect.TypeOf = int in f3 Value = 3.1415927 reflect.TypeOf = float64 in f3 =================================================================== f1 has been run completely. 1048576 is type of int in f2 f2 has been run completely,1048576 真实的对象类型: int f1 has been run completely. So in Love is type of string in f2 f2 has been run completely,So in Love 真实的对象类型: string 无法识别类型： true f2 has been run completely,true 真实的对象类型: bool