Go语言中使用反射的方法

　　本文实例讲述了Go语言中使用反射的方法。分享给大家供大家参考。具体实现方法如下：
复制代码 代码如下:// Data Model
type Dish struct {
Id int
Name string
Origin string
Query func()
}

　　创建实例如下：
复制代码 代码如下:shabushabu = Dish.new
shabushabu.instance_variables # => [@name]
shabushabu.origin = Japan
shabushabu.instance_variables # => [@name, @origin]

　　完整代码如下：
复制代码 代码如下:package main
import(
fmt
reflect
)

func main(){
// iterate through the attributes of a Data Model instance
for name, mtype := range attributes(&Dish{}) {
}
}

// Data Model
type Dish struct {
Id int
Name string
Origin string
Query func()
}

// Example of how to use Gos reflection
// Print the attributes of a Data Model
func attributes(m interface{}) (map[string]reflect.Type) {
typ := reflect.TypeOf(m)
// if a pointer to a struct is passed, get the type of the dereferenced object
if typ.Kind() == reflect.Ptr{
typ = typ.Elem()
}

// create an attribute data structure as a map of types keyed by a string.
attrs := make(map[string]reflect.Type)
// Only structs are supported so return an empty result if the passed object
// isnt a struct
if typ.Kind() != reflect.Struct {
fmt.Printf(%v type cant have attributes inspected\n, typ.Kind())
return attrs
}

// loop through the structs fields and set the map
for i := 0; i < typ.NumField(); i++ {
p := typ.Field(i)
if !p.Anonymous {
attrs[p.Name] = p.Type
}
}
return attrs
}

　　希望本文所述对大家的Go语言程序设计有所帮助。