WTF

WAT? A Funny Look at Ruby and JavaScript Oddities

by Joey deVilla on January 28, 2012

WAT: A donkey in an orange raincoat, standing on the deck of ship holding a tabby cat

The Urban Dictionary definition of "wat" is "the only proper response to something that makes absolutely no sense". The concept of wat is covered a little more completely on its page in Know Your Meme.

Darth Vader standing in the ocean, pouring water from a Brita pitcher into a plastic jug

"Wat" is also the title of a funny demo of Ruby and JavaScript oddities presented by Gary Bernhardt at CodeMash 2012, a rather unlikely tech conference — it takes place in Sandusky, Ohio, in Ohio’s largest indoor waterpark. (If you just said "wat" right now, you’ve used the word correctly.)

In the video, you see this classic wat bit about undefined variables and assignment in Ruby:

Screenshot of an irb session full of wat

You’ll also marvel at the way JavaScript treats (array + array) vs. (array + object) vs. (object + array) vs. (object + object):

Screenshot of a jsc session full of wat

Watch the video, and wait for that final slide, which is pure, hilarious wat!

This article also appears in the Shopify Technology Blog.

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