JavaScript and Duck Typing

Mallard — Picture under the Creative Commons license (source: https://flic.kr/p/ncTxxu) A poet called James Whitcomb Riley once said: “When I see a bird that walks like a duck and swims like a duck and quacks like a duck, I call that bird a duck.” Much probably referring to the Mallard (like the one of the above picture) that acts just like a duck, but isn’t a duck! Well, in programing language we