如何在 Go 中查找对象的类型？

Question

How do I find the type of an object in Go? In Python, I just use typeof to fetch the type of object. Similarly in Go, is there a way to implement the same ?

Here is the container from which I am iterating:

for e := dlist.Front(); e != nil; e = e.Next() {
    lines := e.Value
    fmt.Printf(reflect.TypeOf(lines))
}

I am not able to get the type of the object lines in this case which is an array of strings.

转载于:https://stackoverflow.com/questions/20170275/how-to-find-a-type-of-an-object-in-go

Answer 1

The Go reflection package has methods for inspecting the type of variables.

The following snippet will print out the reflection type of a string, integer and float.

package main

import (
    "fmt"
    "reflect"
)

func main() {

    tst := "string"
    tst2 := 10
    tst3 := 1.2

    fmt.Println(reflect.TypeOf(tst))
    fmt.Println(reflect.TypeOf(tst2))
    fmt.Println(reflect.TypeOf(tst3))

}

see: http://play.golang.org/p/XQMcUVsOja to view it in action.

More documentation here: http://golang.org/pkg/reflect/#Type