gogo-reflect

Call a Struct and its Method by name in Go?


I have found a function call MethodByName() here http://golang.org/pkg/reflect/#Value.MethodByName but it's not exactly what I want! (maybe because I don't know how to use it ... I cannot find any example with it). What I want is:

type MyStruct struct {
//some feilds here
} 
func (p *MyStruct) MyMethod { 
    println("My statement."); 
} 

CallFunc("MyStruct", "MyMethod"); 
//print out "My statement." 

So I guess, first I need something like StructByName() and after that use it for MethodByName(), is that right!?


Solution

  • To call a method on an object, first use reflect.ValueOf. Then find the method by name, and then finally call the found method. For example:

    package main
    
    import "fmt"
    import "reflect"
    
    type T struct {}
    
    func (t *T) Foo() {
        fmt.Println("foo")
    }
    
    func main() {
        var t T
        reflect.ValueOf(&t).MethodByName("Foo").Call([]reflect.Value{})
    }