Benchmarks for getting object type in go. http://stackoverflow.com/a/27160765/2078664 based on https://gist.github.com/mrap/7f08c9549289b6aea2923c27888e7e3e

results.md

goos: darwin
goarch: arm64
pkg: github.com/rrrix/go-play/reflect-type-bench
BenchmarkStringType-10       27413637        42.87 ns/op      16 B/op       1 allocs/op
BenchmarkReflectTypeOf-10    205474878        5.824 ns/op      0 B/op       0 allocs/op
BenchmarkSwitchType-10       1000000000       0.8087 ns/op     0 B/op       0 allocs/op✨✨
PASS
ok  github.com/rrrix/go-play/reflect-type-bench4.102s

typeof_test.go

package typeof

import (
	"fmt"
	"reflect"
	"testing"
)

type Thing struct {
}

func StringFormatType(v interface{}) string {
	return fmt.Sprintf("%T", v)
}

func ReflectionTypeToString(v interface{}) string {
	return reflect.TypeOf(v).String()
}
func SwitchReflectType(v interface{}) string {
	switch v.(type) {
	case int:
		return "int"
	case string:
		return "string"
	case bool:
		return "bool"
	case Thing:
		return "thing"
	default:
		return "unknown"
	}
}

func BenchmarkStringType(b *testing.B) {
	var v Thing
	for i := 0; i < b.N; i++ {
		StringFormatType(v)
	}
}
func BenchmarkReflectTypeOf(b *testing.B) {
	var v Thing
	for i := 0; i < b.N; i++ {
		ReflectionTypeToString(v)
	}

}
func BenchmarkSwitchType(b *testing.B) {
	var v Thing
	for i := 0; i < b.N; i++ {
		SwitchReflectType(v)
	}
}