NaN minutes later, a truck arrives in the alley, its license plate reads “undefined”. Someone gets out of the vehicle
“I have something for you”
He gives you a package. You open it. It’s an [object Object]Must be from the NPM delivery service. The recipient is lucky the driver didn’t give them thousands of dependencies too.
“I got a package from Jason”
Ah sweet, my
left-padis coming today!You don’t get dependencies in real life like that.
You work 10 years in an industry and try to get a promotion? That may be a dependency issue.
“I’ve been looking for you! Got something I’m supposed to deliver. Your hands only.”
You wouldn’t want your code throw an exception
[object Object]
As someone who mostly avoids JavaScript, I don’t see the IT in this image, I just see a bad language I avoid!
I promise you, people make mistakes in every language lol.
I had the exact same reaction.
I [object Object]
The Javascript literal interpretation of NaN never fails to amuse me.
"a"+"b" -> "ab" "a"-"b" -> NaNYeah:
parseInt("a") -> NoT a NuMbErSure, but the main issue here is that JS doesn’t only auto cast to more generic but in both directions.
Maybe a better example is this:
"a" + 1 -> "a1" "a" - 1 -> NaNWith + it casts to the more generic string type and then executes the overloaded + as a string concatenation.
But with - it doesn’t throw an exception (e.g. something like “Method not implemented”), but instead casts to the more specific number type, and “a” becomes a NaN, and NaN - 1 becomes NaN as well.
There’s no situation where
"a" - "b"makes any sense or could be regarded as intentional, so it should just throw an error. String minus number also only makes sense in very specific cases (specifically, the string being a number), so also here I’d expect an error.If the programmer really wants to subtract one number from another and one or both of them are of type string, then the programmer should convert to number manually, e.g. using
parseInt("1") - parseInt("2").
I’m an old fuck and I started to code in the late 80s. Fast forward 30 years, I once had to work at a WeWork. One day, directly outside of my small office space, I swear to god, a fucking hipster kid with a Macbook under his arm practiced skateboard moves. That was the exact moment I started hating working in IT. It’s also what I think every Javascript coder looks and acts like.
I had a weird image of the hipster using the Macbook to do the kick flip…
I got one of those too. I called the customer service to get another path home because of disturbances, and they just have robot answering. The robot started halfway through the call just reading pure json at me, and then said “to get this information as a message press 1” or something. This is what I got:
Here is your journey from undefined to undefined: BUSS 506 towards Karolinska sjukhuset 09:36 from undefined 10:18 arrived at undefined. Link to your journey.
If you want those on separate lines you need to add two spaces on the end of each line!
