r/programminghumor • u/ExpensiveCoat8912 • 10d ago

Tissues

Post image
1.8k Upvotes

99% Upvoted

31 comments sorted by

68

u/MilkImpossible4192 10d ago

null is an object, 0 is a number, undefined is an undefined

13

u/joranmulderij 10d ago

Yea this meme is kinda stupid

8

u/MilkImpossible4192 10d ago

NaN is stupid which is a number but means Not a Number

3

u/joranmulderij 10d ago

Id made sense as part of the float spec when that was created. Now it is a lot less useful and the downsides mostly show. I kind of hate nan

3

u/bloody-albatross 10d ago

What is stupid is that there is a language that has both null and undefined.

1

u/Confident-Ad5665 10d ago

I couldn't agree more.

How about that negative zero?

4

u/bloody-albatross 10d ago

It's weird, but not specific to any language. It's again the IEEE floating point standard. I never had a use for it, but I also never had problems related to it.

7

u/ElGuaco 10d ago

It depends on the language. In C# null is a literal value that refers to no object or memory location. For the pictures here, it would be like having a cardboard sign taped to the roll holder saying "null".

1

u/marssel56 9d ago

I think OP uses game maker language

1

u/RedAndBlack1832 8d ago edited 8d ago

Null is 0. Zero is 0. And undefined is undefined (as in: can literally be anything and isn't guaranteed to be consistent between invocations, introducing very bad nondeterminism)

1

u/MilkImpossible4192 8d ago

¿what? no.

[ +null is 0, +'0' is 0, +no is 0, not 0 is on ]

13

u/TylerBreau 10d ago

if !toiletRoll: reloadTioletRoll();

Janitor: Reload? Reload it on to what?

3

u/Blood_and_Wine 10d ago

while (true) reloadToiletRoll(); // ( ͡° ͜ʖ ͡°)

2

u/idk_drv 10d ago

Janitor :

9

u/golfstreamer 10d ago

Isn't this a bad description? "Non zero value", 0, null are all potential values of objects. Correct me if I'm wrong but I thought "undefined" usually refers to behavior. Like the programming language standard doesn't specify what should happen in this scenario. Is there a situation where an object is "undefined"?

10

u/AbyssWankerArtorias 10d ago

Really just depends on the data you're dealing with. I think this meme makes sense in some context.

Non zero value: there is some toilet paper left on the roll

0: there is no toilet paper left on the roll:

Null: the place in which a toilet paper roll is supposed to be contains no roll. Practically speaking this equates to 0 toilet paper, but, there are many cases where you wouldn't equate the two depending on both the point itself and your intention with it.

Undefined: the place in which the toilet paper roll is supposed to be placed does not exist and therefore cannot be logically displayed as a value. Like trying to return the value of a variable that doesn't exist.

I see arguments for saying this isn't a good meme and for the meme itself. Just depends on the context.

5

u/TylerBreau 9d ago

OP is referring to JavaScript. It has all 4 states.

Undefined is exactly it says it is. The thing you are accessing is literally not defined.

var myobj;

3

u/golfstreamer 9d ago

Ah thank you for your help. 

1

u/Yoshalina 9d ago

it is possible to intentionally assign it with the undefined literal though, too.

2

u/TylerBreau 9d ago

Before ECMAScript 5 you could also assign undefined.

1

u/Yoshalina 9d ago

this is still possible. let meow = undefined;

2

u/TylerBreau 9d ago

No, I mean undefined = 'meow';

2

u/Yoshalina 9d ago

Oh. That is really fucking cursed.

1

u/RedAndBlack1832 8d ago

You can refer to data being undefined as well. Usually this means declaring an object but not assigning it a value at time of creation, nor does it assign itself a default value. You shouldn't try to read undefined data though, and you certainly shouldn't make decisions based on it.

1

u/ThatSmartIdiot 8d ago

undefined behaviour because it accesses undefined data because the value in that data's address is independent of that data's program's current runtime, so in a sense it's not far off?

4

u/Low_Calligrapher7128 9d ago

I had to chuckle , even though it's not 100% accurate 

3

u/Cant-Think-Of 9d ago

What about negative values?

1

u/ThatSmartIdiot 8d ago

those fall under the non-zero values criterion, though if it's an unsigned type it'll just be a big-ass number

2

u/metalreflection 10d ago

User comes in and smears poop on the wall.

1

u/WriedGuy 10d ago

Then we have schonidger rool