The example on the blog post json-and-go describes decoding arbitrary data, but instead of switching on the default concrete type for numbers - float64, it looks for int, making it print: is of a type I don't know how to handle. This change looks for float64 instead of int. Change-Id: I86825003893216dd52212d7f75239ec57770a83b Reviewed-on: https://go-review.googlesource.com/71930 Reviewed-by: Ian Lance Taylor <iant@golang.org>