Go Programming Tips

Add 0x prefix when printing hex numbers

Use %#x placeholder.

func TestPrintHex()  {
	var i int = 0x123456
	fmt.Printf("%x\n", i)
	fmt.Printf("%#x\n", i)
}

123456
0x123456

Print the type of a variable

fmt.Printf("%T\n", i)
fmt.Println(reflect.Typeof(i))
fmt.Prinft("%s\n", reflect.Typeof(i).String())