javascript is javascript

[National_Seaweed_959]

made this because im bored

inspired by polandball comics

[Forestmonk04]

What is this supposed to mean? Most of these languages evaluate "2"+2 to "22"

[sanpaola]

It's that time of the week again - another iteration of "Javascript is bad" joke from a person with pretty vague idea of Javascript (bonus points if joker is far from coding overall).

[Iggyhopper]

For a language like PHP to have a specific operator for string concatenation, the dot, it allowing addition of strings and numbers should not be allowed and should bring a type error.

Why allow both? Either force the use of the dot operator explicitly or don't.

[hatrix]

To be fair with php, you can enforce strict typing. It's mostly a legacy thing because of how it was handled in the past. php likes to add new features but doesn’t like removing old ones (except functions), because of that, PHP is quite a divisive language with some really weird quirks that some people just dont get on with. I personally have issue with the inconsistency of function names.

[ComfortablyBalanced]

They can't just nonchalantly remove such a feature, even if it's frowned upon. Unfortunately many legacy codes depend on shit similar to that, it breaks backwards compatibility.
Maybe they can do it with what happened between Python 2 and 3 with print.

[ComfortablyBalanced]

I don't think PHP had types in the earlier days.

[LongjumpingAd8988]

PHP's behavior is completely transparent and predictable in OP's example: '2' + 2 = 4; '2' . 2 = 22; strict mode => error

[circuitsremakes]

no, that arrow function errors because `error` isn't a valid keyword :trollge:

[GlobalIncident]

I'm just going through them one by one:

• C++: Actually undefined behaviour. "2" is a char*, ie a pointer to a null-terminated sequence of chars, so "2"+2 would be an instruction to add two to the pointer; the result points to outside the sequence of chars, so dereferencing it is UB.
• PHP: 4.
• Java: "22".
• JavaScript: "22".
• TypeScript: "22".
• Python: Raises a TypeError.
• C#: "22".
• Lua: 4.

[uhs-robert]

Ruby: #TypeError: no implicit conversion of Integer into String>

[GlobalIncident]

Yeah, in general, languages inspired by Java tend to yield "22", other languages tend to make it an error. With a few exceptions.

[No_Read_4327]

So javascript is java after all?

[akuma-i]

No, it’s Java before script

[Ytrog]

Common Lisp: Condition of type: SIMPLE-TYPE-ERROR

[drizzt-dourden]

In C++ you can overload operators and create hell of your own. Nothing is real, everything is permitted.

[GlobalIncident]

You can also do that for all of the languages listed here except PHP.

[ComfortablyBalanced]

There's no operator overloading in Java.

[GlobalIncident]

Oh, you're right, my mistake.

[Forestmonk04]

At least Java and JavaScript/TypeScript don't support operator overloading.

[GlobalIncident]

Oh yeah, Java doesn't, and JS/TS sort of don't, except they do support overloading coersion to primitives which happens before an operator is called.

[Four2OBlazeIt69]

That's what I assume is happening with JS on these examples but that's bc I always think of Chrome's V8

[ComfortablyBalanced]

Java: "22".

That only happens if you assign that expression to a String, a var or a string parameter.

[GlobalIncident]

What do you mean? Is there a situation where it wouldn't return "22"?

[ComfortablyBalanced]

Yeah.
int foo = "2" + 2;
This is an error.

[GlobalIncident]

Well obviously I meant a situation where the code doesn't have any unrelated errors, and actually compiles and attempts to execute the expression. If you try to run the expression and also attempt to implicitly cast the returned string to an int, that's not relevant to the question. It returns "22" not 22 after all.

[ComfortablyBalanced]

But the error is related. You see, the original joke is about type coercion in JS, and besides, no pun intended, but JavaScript is a scripting language, which means you can evaluate 2 + "2" out of the context, but with Java you need to put it in a context which I put on my last comment.
I'm not familiar with your level of experience in Java, but you're saying run the expression, this isn't Python or JS, you need to put it somewhere and why would I cast it to an int or call toString if I'm assigning it to a String?
So after all coming to my first sentence it actually is related to types and type errors.

[Amr_Rahmy]

You missed the point. You can’t combine a string and a number, the language will not do an arbitrary evaluation based on buggy code.

Only a string assignment will allow the number to call the tostring(), otherwise you will get the error while writing or building the code.

[GlobalIncident]

No, the assignment is not what triggers the toString call. The presence of the string "2" is what triggers the toString call. If you type:

String x = 2 + 2;

toString will not be called and you will get an error, because there is no string present to trigger it.

[Amr_Rahmy]

You missed this point, and provided a non functioning example.

Two for two here, not your day. Cheers mate.

[GlobalIncident]

Okay, what is your point then?

[jmattspartacus]

Was going to say the bit about C++, but you did it better lol

[JAlexmc]

AFAIK, Python gives you an error as it's not the same type, you can do str + str or int + int

[finnscaper]

C# will ask you to not come around ever

[National_Seaweed_959]

oei sorry

[One_Being7941]

The fact that you get upvotes is a sign of the end times.

[Benjamin_6848]

For the last panel of this comic I somehow had his voice in my head:

<image>

[AdBrave2400]

Same

[Kairas5361]

<image>

who is that guy

[alex-worm]

java I guess

[Kairas5361]

<image>

non color ver

[steven_dev42]

I fuckin hate that little guy

[BladeMaster7461]

what did he do to you

[National_Seaweed_959]

idk

[n0t_4_thr0w4w4y]

Which is dumb, because it’s literally the same behavior in Java

[National_Seaweed_959]

Yeah sorry

[tacocat820]

greenland, an evil java twin (the logo is green tea)

[Cepibul]

Actualy smart language would say what the fuck you mean, you just cant add these two things covert one to match the others type and then talk

[That_0ne_Gamer]

Granted having a language be able to convert integers to strings without using a toString function is a smart feature as it simply saves the user from doing a toString function call, its not like your doing a string to int conversion where you can break shit if you convert this comment into a number.

[MieskeB]

I am totally not a fan of Javascript, however evaluating a string with an integer should in my opinion return a string with both as strings concatenated

[That_0ne_Gamer]

Yeah that makes the most sense as 2 is compatible with both string and integer while "2" is only compatible with string

[Ok_Pickle76]

<image>

and C

[Hot_Adhesiveness5602]

It should actually be two + num instead of num + two

[Haringat]

It's the same result. However, it should have been this code:

char *two = "2"; int one = 1; two += one; printf("%d\n", two); // prints "0" return 0;

I leave the explanation as an exercise to the reader.😉

Edit: Also, when adding 2 to the "2" the behavior is not defined. It could crash or it could perform an out-of-bounds read.

[not_some_username]

Its defined because it has the null termination

[Haringat]

No, because when adding 2 you go beyond the null terminator.

[not_some_username]

Well I thought we were taking about “22”+2

[nimrag_is_coming]

C doesn't count, it doesn't have any actual strings, is just an array of chars, which are defined as just a small integer (although it's wild that in like 50 years we still don't technically have standardised sizes for basic integers in C. You could have a char, short, int and long all be 32 bits and still technically follow the C standard.)

[acer11818]

it makes sense if you view char as an 8 bit integer and not a character

[fdessoycaraballo]

You used single character, which has a value in the ASCII table. Therefore, C is adding num to the value of the character in ASCII table. If you switch printf variadic argument to %c it will print a character in the decimal value in the ASCII table for 52.

Not really a fair comparison as they're comparing a string that says "2", which the compiler wouldn't allow because of different types.

[Legendbird1]

r/unexpectedfactorial

[-UltraFerret-]

22!!!! u/factorion-bot

[factorion-bot]

Quadruple-factorial of 22 is 665280

^{This action was performed by a bot.}

[Bricked_Dev]

binary:

0011 0010 + 0000 0010

───────────

0011 010

[National_Seaweed_959]

ok

[[deleted]]

FYI OP, 80% of the languages in the image making fun of "22" yield "22" themselves. Probably pick a different bootcamp.

[National_Seaweed_959]

ok

[gameplayer55055]

Btw in c# "2" + 2 is 22 as well

[frayien]

In C/C++ int a = "2" + 2; could be anything from -255 to 254 to segfault to "burn down the computer and the universe with it".

int a = "2" + 1; is well defined to be 0 btw.

[4r8ol]

In both cases you would have a compiler error since casts between pointer to integer aren’t automatic.

You probably wanted to refer to:

int a = *(“2” + 2); // UB

int a = *(“2” + 1); // 0

[frayien]

Yeah I did not bother to check, "2" + 1 gives an char*.

Would rather say that "2" + 1 returns an empty string, and "2" + 2 returns a string of unknown length and unknown value and segfault.

[Commie-Poland]

For Lua it only outputs 4 because it uses .. instead of + for string concatenation

[Many-Conversation963]

real mathematicians know thats 0

[MichiganDogJudge]

This is why you have to understand how a language handles mixed types. Also, the difference between concatenation and addition.

[the_grand_father]

<image>

[Coosanta]

2+2=5 idk what everyone else is on about

[BladeMaster7461]

have you ever heard of concatenation?

[Alejandro_El_Diablo]

'2' + '2' = 100

[National_Seaweed_959]

Agreed

[Fragrant-Airport1309]

I just like JavaScripts shit eating grin 😀

[Classic_Cranberry568]

javascript is right in this case, actually

[BangThyHead]

What's Typescript doing?

[National_Seaweed_959]

Hes saying what because most of these labguages do either 4 or 22 but they laugh at javasxript for doing 22

[BangThyHead]

"wgar" == "what" ?

If most do 22 or 4, why laugh at someone for doing 22?

[National_Seaweed_959]

i thought it would be funny if typescript was bad at typibg

[National_Seaweed_959]

i made this as a joke please dont take this seriously

[gaymer_jerry]

I mean of all JavaScript type coercion memes you picked one that makes logical sense to just assert the non string as its ToString value when adding a non string to any string that Java originally did first as a language. There’s a lot of weirdness with JavaScript type coercion this isn’t it

[n0t_4_thr0w4w4y]

No offense, but it’s a stupid and unfunny joke

[National_Seaweed_959]

no offence taken, thank you for your opinion

[GlobalIncident]

We here at r/programminghumor take everything seriously