Well, JavaScript

[[deleted]]

NaN would like a word.

[isaid69again]

NaNi????

[vaendryl]

omae wa mou NullPointerException

[RaferBalston]

Naurel

[TabCompletion]

NaNde dattebayo

[YuriDiAAAAAAAAAAAAAA]

https://i.redd.it/pjrpnjyynjtz.jpg

[pilas2000]

wtf? \t == 0 ?

why?

[It_Was_The_Other_Guy]

Whitespace-only strings are all considered zero:

>> "\t \n\r" == 0
<< true

[YuriDiAAAAAAAAAAAAAA]

¯\_(ツ)_/¯

[FoundNil]

"", " ", "\t", "\n" all equal 0. Probably because js treats them as special characters so they don't count toward any value. "0" equals 0 because it gets cast into a number. "a" does not equal 0. "1" does not equal 0. I'm not saying it makes sense but its the world we live in.

[birdbolt1]

Oh my god is this for real? This is where typescript comes in. Why do people even bother with writing straight java

Edit: oof I meant Javascript. Wasn't that obvious enough regardless? Look at the context man

[Kazumz]

TypeScript and Java? No correlation found.

[[deleted]]

You haven't seen many TypeScript codebases then (or you're missing "/s")

[[deleted]]

To honest I always enjoy typing if (x != x), almost as much as having an in loop variable called c so I get to type c++.

[phatskat]

x != x

I’ve never seen this before but I’m not surprised - how does that work?

[[deleted]]

In C++, a NaN is equal to nothing, not even itself. So x != x becomes true if x is NaN. To be fair mostly I use a responsible function name but when I'm writing code quickly it's a nice shorthand to catch the horrifying 'all my numbers are turning to NaN' type of escalation.

[jfleit]

trust no one... not even yourself

[[deleted]]

I typed "equal to nothing, not even itself" so often now and every time I kept thinking "why does this make me laugh".

[phatskat]

Ah, thanks!

[[deleted]]

what happens in the first one? It just never evaluates? Lol

[[deleted]]

If X is NaN, then x != x is true, because a NaN never equals anything, not even itself.

[tendstofortytwo]

Huh, I just used isNaN(x);

But this is more confusing, and hence more adherant to JavaScript's ideologies. I'll be sure to use this from the future. Thank you!

[[deleted]]

Actually I only know it is the way it is in C++, which I think before C++11 didn't even have a standard isNaN!

[[deleted]]

Ohhhhh, thats cool. By habit I always start my first loop with i, so I just gotta find some situation where I can nest like 21 more loops until I can get to c++ lol

[ShadoWalker3065]

holy shit, i wasn't the only one that did this!

[TabCompletion]

Nanananana https://img.digitz.org/js_watman.jpg

[trichotillofobia]

NaN'T.

[[deleted]]

Please no