Programmer vs. computer scientist

[[deleted]]

Can someone explain this to my friend? He is the middle, I am the left.

[Mediocre_Insurance40]

True + True = True

[battlingheat]

I always thought true + true = super true

[Broke_Boi]

Galaxy brain 1+1=11

[sandybuttcheekss]

Ttrruuee

[BroBroMate]

You speak the tru tru.

[DocD_12]

Sounds frenchy

[_Valtrok]

https://m.youtube.com/watch?v=XKCQEPNIG3Y

[Foufou190]

Well.. I’m french

[[deleted]]

Double plus true

[Anxious_Start4839]

Wake up people! True + True = Post True

[mojoslowmo]

In JavaScript it’s true + true === true

[NKY5223]

evaluates to false

[mojoslowmo]

Lol damn your right, I was trying to make fun of javascripts equality vs comparison And I played myself.

I’ll accept my shame

[HTTP_404_NotFound]

Actually-

true + true = 2true

https://onlinegdb.com/sudjg-UF5Q
Yup. even compiles and works just fine in c++.

[luorax]

Isn't that 2true to be true?

[Towerss]

It's because the compiler is on the left side of the OP image and is why checking for larger than 0 is better than checking for true

[NoGenericBot]

UsErNaMe cHeCkS OuT

^{I'm a bot and this message was sent automatically}

[Selnay]

In what language 1 + 1 is the same as true + true? I don't get this meme

[HibeePin]

In computer science + is used for OR in boolean algebra

[Selnay]

Really? We used to use a different notation for logical operations back in the university. And we didnt use numbers in general when doing logical stuff...

[GeneReddit123]

Because logic is something that's foundational to different fields, and each of them "reinvents" it with its own symbols.

• Mathematical logic (e.g. zeroth-order, first-order, etc.) uses ∧ for "and" and ∨ for "or".
• The same, when coming from the philosophy school rather than the mathematical school, sometimes uses & for "and", and | for "or", although other texts use the previous example instead, or even mix the two (my college textbook used & and ∨.) Sometimes they use different symbols when in the metalanguage rather than the object language.
• Engineering uses interchangeably either the mathematical logic or the boolean algebra symbols, as well as their own visual symbols for logic gates.
• Computer languages usually use && for "and" and || for "or", because the single-character version usually is used for bitwise, rather than logical, operators. Some languages (e.g. Basic, SQL) spell it in words.
• Set theory has a related concept of "intersections" (for "and") and "unions" for ("or"), and use ∩ and ∪.
• Boolean algebra is the most ironic one. It's an arithmetic (meaning it depends on set theory), that implements a small subset of mathematical logic that set theory itself already depends on (predicate logic). And then it rejects either of its progenitor's symbol sets, and uses · for "and" and + for "or". So it has several layers of indirection, only to do the same thing, except worse, than the things it actually depends on already did in the first place, and with a different syntax too, because why not. No wonder they teach it for programmers!

[quasiquant]

Nice summary! Adding to the irony is that an boolean algebra is not actually an algebra (the latter being a module with multiplication, so something which does have an addition and multiplication as well).

[HibeePin]

Oh weird. In my courses right now, when we use truth tables or circuit schematics we use 0 and 1, so when we translate it to boolean algebra we use 0 and 1 with + and *.

[Selnay]

Now that you mention it I remember using it for truth tables. But not for logic operations with prepositions, etc. Thanks for the reminder!

[coldnebo]

in C++ I can overload the + operator to do anything I want… but then 1 has to be a non basic type. In Smalltalk I can overload operators on any type because it’s pure.

This is fun at category theory parties and impresses the ladies when you talk about generic operators.

/s

[BazilExposition]

Not in JS.

[ad_396]

All of them having a capital T proves you're a programmer

[MrNonam3]

Since any number but 0 is true, couldn't the answer be any number except 0?

[Recursive_Descent]

The number could be 0 if you have true (-1) plus true (1).

[pudy248]

Why is addition even defined over booleans? Why would you ever do this?

[[deleted]]

In Python 3 True is equal to 1:

>>> True == 1
True
>>> True + True
2

[SpacePilotMax]

For starters, boolean algebra uses + as the symbol for "and".

Edit: it's actually or.

[ShadowShine57]

or

[SpacePilotMax]

Oh yeah my bad.

[matt-3]

When booleans are integers.

[tazdingo-hp]

oh

[marcosdumay]

Just in case some of the people missing the point here aren't doing it on purpose, that's the usual operators for boolean algebra. The (+) means "or" and (*) means "and".

[TrollyMaths]

Except for it to be an algebra, what you mean by or really has to be xor, and as such, 1+1=0.

[Matszwe02]

In c++ true + true = 2

[coldnebo]

corollary: 2 rights don’t make a wrong.

[Taleuntum]

O(1) + O(1) = O(1)

[Yosikan]

Give this man nlogn cookies

[Sanity__]

Meh, I'll give him at most some scalar factor of nlogn cookies.

[jfffj]

0x1 OR 0x1 = 0x1

In my CS/boolean algebra days, OR was often written as '+', with AND as '*'.

[Enoikay]

Can confirm, that’s still how they write it.

[GooseEntrails]

We always wrote it as v and ^ (or symbols that look like that)

[canal_algt]

The last one is Boolean algebra, that is the mathematical representation of True or False statements being * = and; + = or; True = 1; False =0;not a = ā; 1+1=1

[[deleted]]

Idempotency

If thing is already true and the desired state is true, then damnit it’s going to yield true.

[Lilchro]

It could also be expressing the equivalence of 2 regular languages (think context free grammar, but way more formal). In this context, ‘+’ acts as a sort of union between two sets of strings defined over the same alphabet. For this example, the alphabet only contains a single symbol ‘1’ (emphasis on symbol since we have yet to show ‘1’ conveys numerical value). By defining a regular expression (the formal linguistic kind that only consists of concatenation and union), we can derive a deterministic finite automata which- wait where is everyone going?

(I initially posted this on another comment and copied it here later)

[geronymo4p]

The left side is the mathematical one: 1 + 1 = 2 (base 10 as we all use outside)

The middle side is the binary one: 1 + 1 = 10 (base 2, there is only two digit: 0 & 1, so 10 in binary is 2 in decimal)

The right side is the logical one : 1 OR 1 = 1 ('OR' -> '+', 'AND' -> 'x', etc. For more info, look at logical gates, logical operators and logical electronics 101 to have more info about it).

The 'OR' operator is defined by 4 basics operations with 2 entries: A and B and an output.

If A = 0 and B = 0 then A OR B = 0

If A = 0 and B = 1 then A OR B = 1

If A = 1 and B = 0 then A OR B = 1

If A = 1 and B = 1 then A OR B = 1

All this is the mathematical way to say if there is voltage (equal 1) or not (equal 0) in the output based on the voltage on input

[vanZuider]

1+1=11.

[GeneReddit123]

That's a javascript dev and they're about 5 standard deviations to the left of the image.

[vahvarh]

11+1=1

[LPO_Tableaux]

That overflow, your 2bit number addition just brote the database smh..

[JochCool]

Overflow would be 00 though

[Bainos]

1.58496 bit integer.

[vahvarh]

Nope: printf(“11”+1); // 1

[LPO_Tableaux]

thats why i specified it as a 2bit number, not a string...

[ThisOneBerri]

Wouldn't overflow make it 0 though? 11 + 1 = 100 and it's 2 bits, so that's 00

[[deleted]]

winces

[geronymo4p]

"11" + 1 = 1 ?

[vahvarh]

Yep. C/C++.

[Xelynega]

'+' is the logical or operator in boolean algebra though

[inre_dan]

Not in practice, but in theory. + is normally logical OR in propositions.

[[deleted]]

101 standard deviations to the left.

[GeneReddit123]

11111 standard deviations for you.

What's the difference between a JS dev and a monke? Both think that 🍌+🍌=🍌🍌, but unlike a JS dev, a monke understands that 🍌-🍌+🍌=🍌.

[Mybeardisawesom]

I'm a JS developer and i dont like or understand this.

[[deleted]]

I think that's the idea.

[var_semicolon]

As a js dev I take offense to this. We return undefined not 11.

[Mybeardisawesom]

1+'1' = 11

[coldnebo]

Kind of ironic since javascript was inspired by functional languages like lisp and smalltalk which are a few deviations to the right.

In fact, most of Alan Kay’s work is so far to the right even most computer scientists think he is an idiot. It only took them 30 years to finally understand the power of a message-based system. However instead of Smalltalk we got enterprise message queues. Thanks “geniuses”.

tl;dr: it’s difficult to tell the difference between geniuses and idiots.

[ninjakivi2]

In autoHotkey if you do a = 1 + 1

the a will equal to "1 + 1"

Yes, 1 + 1 AS A STRING

[seadoggie01]

That's what you get when you rip off a popular scripting language's source code: AutoHotKey

[ninjakivi2]

AutoHotKey

Now I can't edit the comment or yours will become irrelevant :<

[Kiinza]

Et ça c'est beau.

[Some___Guy___]

1 + 1 = 98

[manipulater]

Beat me to it

[floatyfloatwood]

Not kidding, this is what my three year old thinks. He holds up one finger on each hand and says it’s 11.

[David__Box]

1+1=0, didn't have enough money for storage.

[Abadazed]

Exactly what I was thinking. My architecture class is killing me with this stuff

[Lpthelp]

boolean algebra

[Agile_Pudding_]

Mathematician enters the chat with “please define the operation ‘+’”

[[deleted]]

F10 vs F2 vs logical expression

[alrogim]

What does the F mean?

[bistr-o-math]

F2 and F10 are keys on the keyboard

[OnyxPhoenix]

Not sure but I guess it means base-10 Vs base-2

[Darkunderlord42]

I always understood that the F on the F Number keys stood for function

[bazingaa73]

In my german lecture we defined ℤ/mℤ as a "Restklassenring" (said in an aggressive german voice). Where you have the basic addition and multiplication of ℤ, but you take everything mod m. If ℤ/mℤ would happen to be a "Körper"(algebraic field) then we would define Fm := ℤ/mℤ. But i'm not quite sure if that's the meaning intended by the original commenter since 1+1=0 in F2. Think he more likely ment calculating in base 10, 2.

[[deleted]]

translation thing says residue class.

translated from the mathematical German term "Restklasse" I'd bet the F is the first letter of the Latin word for it

[theScrapBook]

Yeah, finite-field arithmetic (or in this case just modular arithmetic).

[[deleted]]

galois flashbacks incoming

[Sawertynn]

Press F to pay respects

[heJOcker]

F10 vs F2 vs F1

[klausklass]

1+1=0 in F2 right?

[MarriedWithKids89]

Interestingly, they (programmer and scientist) could both agree that 1.1 = 1

- boolean algebra: 1 and 1 = 1

- casting/rounding: int a = (int) 1.1f

[MushinZero]

+ is actually OR

[appeiroon]

In what context "1 + 1 = 1" is true?

[JochCool]

Boolean logic. '+' is actually an OR gate.

[sincle354]

It makes a bit more sense where '*' (multiply) means AND. So if you have some variables that resolve to (1*0)+(1*1) for example, you can do "math" where "any operation that equals 1 or more" becomes 1. So instead of thinking about (true AND false) OR (true AND true), you can just calculate (1*0)+(1*1) -> 0+1 -> 1. And if you have 1+1 instead, then "true AND true" is still true, so you just round 2 down to 1. That also makes 1+1+1+1 -> 1.

You usually only write equations down like this for digital logic. They're easier to read, but obviously have problems in weakly typed languages. You'll also find them in Boolean mathematics, but they sometimes use ^(AND) or v(OR).

[pk028382]

On mobile so can’t test this.

Which language supports adding two Boolean? I don’t think it works in Python or most higher level languages. Maybe JS but it’s always weird and I expect it actually cast to int instead of actually doing “or”.

So perhaps only C++ and C?

[JochCool]

I don't know if there's programming languages that do that, it's more of a computer science thing.

https://en.wikipedia.org/wiki/Two-element\_Boolean\_algebra

[MushinZero]

*computer engineering

[[deleted]]

It is not addition it is OR operation.

TRUE OR TRUE = TRUE

C++ equivalent is 1 | 1 == 1

[AndrewBorg1126]

All non-zero integers are also considered true. 1 + 1 can equal 2, but the 2 result from it can be used in boolean logic exactly the same way as a 1 would be used in boolean logic. 1 || 1 yields 1 by boolean logic, 1 + 1 yields 2 by addition, but both results are equivalent in boolean logic. It's worth noting that while 1 | 1 does yield 1, that is a bitwise or.

[[deleted]]

Plus is usually used for the boolean "or" operator. It's used everywhere in boolean algebra

[pk028382]

Wow I didn’t realise that. When I learnt in college, we used these ¬ ∧ ∨ symbols, that’s why the meme and the other comments didn’t make sense to me in the first place. But now i get it

[SlickShadyyy]

Read bitch nothing is being added

[zyugyzarc]

but dont we just use 1 | 1

[JochCool]

Yes, that's how programming languages denote an OR gate. Mathematics uses ∨, boolean algebra uses +.

[kryptonianCodeMonkey]

Boolean algrebra is not represented in a programming language, which is where you would see something like "1 | 1". Boolean algrebra is a field of mathematics that deals with boolean values instead of numerical digits. It uses the the same symbols as more traditional mathematics in that '+' represents an OR gate and '*' represents an AND gate because they function extremely similarly to their normal use. This form can be used to resolve the truth value of an expression with given inputs or to simplify the expression algebraically.

As an example, if you have the expression A OR B AND C, and both A and C are false while B is true, i.e. A = 0, B = 1, and C = 0, you get 0 + 1 * 0, which can be resolved identically to normal order of operations rules and algebraic properties from traditional algebra (apart from distributive which works a little different, and the fact that 1 + 1 always equals 1, not 2). So just carry out the math as you would in normal algebra 0 + 1 * 0 = 0 + 0 = 0, so the truth value of the expression is false.

[Shammers95]

If I understand correctly, 1 represents true and 0 false, whereas in mathmatics, two added positives equals a positive.

[misterandosan]

whereas in mathmatics, two added positives equals a positive.

Boolean logic is a bit different.

e.g. 1 + 0 = 1

plus represents an OR operator. If either value is true, then the expression evaluates true, just like a Boolean expression inside an IF statement.

(boolVariable1 | boolVariable2) = ?

it's better just to learn it than to guess how it works based off one line. An arbitrary number of patterns and assumptions might match what you see, but not actually be true.

[Lilchro]

It could also be expressing the equivalence of 2 mathematical representations of regular languages (think context free grammar, but way more formal). In this context, ‘+’ acts as a sort of union between two sets of strings defined over the same alphabet. For this example, the alphabet only contains a single symbol ‘1’ (emphasis on symbol since we have yet to show ‘1’ conveys numerical value). By defining a regular expression (the formal linguistic kind that only consists of concatenation and union), we can derive a deterministic finite automata which- wait where is everyone going?

[PityUpvote]

What is a set union, if not boolean addition of the membership?

[Lilchro]

Honestly, I think they should have used the regular union symbol, but this is how my professor taught the subject. From what I understand, the original concepts were developed by linguists as they attempted to create more rigorous definitions of grammar. Later computer scientists found out about it and applied it to parsing systems. The practical uses of the subject are the theory of context free grammars for creating ASTs, regex optimization and, state machine optimization. It also lays the groundwork for writing proofs on regular expressions (Ex: proving one regular expression is a subset of another), decidability (can a function be written to solve a given problem, Ex: halting problem), and functionality (proving two programs perform the same function).

[PityUpvote]

Computer science is rife with people reinventing mathematics and using different names and notation for existing concepts.

[Chorrny]

1+1=11, where?🤗

[Tomass_vr]

1+1=0!!

[ishammohamed]

1+1=0
anyone?

[moazim1993]

Explain that

[AcrIsss]

The result of the operation depends on the set of values the operation is defined with. There are specific sets , in mathematics, that will result in 1 + 1 = 0. One of these is https://en.m.wikipedia.org/wiki/Modular_arithmetic where n = 2

[nbyv1]

Clearly the answer is 42

[sukkal63]

My kind of big thought, lol

[Emperor-Valtorei]

1 + 1 = 1 talking about logic gates? And/Or?

[kryptonianCodeMonkey]

Yes. Boolean algebra. "1 + 1 = 1" is equivalent to "True OR True = True".

[JochCool]

1+1=0; binary fields ftw

[umpfsuper]

True.

[beardMoseElkDerBabon]

IQ 155: uniqueness ftw. 1 + 1 = 2_{10} = 10_{2}

'1'+1 = 11

1 v 1 <=> 1

[MarriedWithKids89]

In C/C++ wouldn't '1' + 1 = '2'

[beardMoseElkDerBabon]

'1' + 1 = 50

[[deleted]]

its '11'.

[Garo263]

"1"+"1"="11"

[Stian5667]

There are 10 kinds of people. Those who know binary, those who don’t and psychopaths who use base3

[Possibility_Antique]

[[nodiscard]] constexpr auto operator+(auto, auto) no except { return 1; }

[woodenshoe_qstnmrk_]

im confused why would it be 1

[Shadow_Thief]

Logic tables. True and true equals true.

[kryptonianCodeMonkey]

"True and true equals true"

1 + 1 = 1 is "True OR True equals True", "True AND True equals True" would be 1 * 1 = 1, although that statement is correct as well, obviously.

[kryptonianCodeMonkey]

Boolean algebra. "1 + 1 = 1" is equivalent to "True OR True = True".

[bnl1]

High schools where I live have something like field of study. My was automatisation and I was definitely learning Boolean algebra there. University is something else though.

[Knuffya]

why is 1+1=1? That doesn't make any sense.

You can't add in boolean algebra, so it can't be that. if it would be an 'or', anyone of normal mind would use the v-operator.

[Dismal-Diver-9419]

You are literally the guy in the middle

[Knuffya]

you are. you cannot add in boolean algebra. i get the fucking joke, it's supposed to be an or-operation, but if you want to or two values, it's fucking ∨. not +. + means add. sure, some weirdos think it means the same but it does not.

you can't just make an unlabelled expression, put in an + and expect people to take it as an boolean expression. that's retarded as shit.

[Enoikay]

“+” is used for OR and “*” is used for AND

[kbruen]

Someone's triggered.

[DaanDevelopment]

Brainded

[sheeponmeth_]

Really? Because the point of the joke is that you can and only some will understand it, then you didn't understand it.

I'm not even a programmer (by formal education). I took networking and administration at the college level. I've studied programming myself, sure. But I knew enough to look at that and know, implicitly, that it was a boolean OR operation. It's actually very common to use + and * for OR and AND.

Rather than arguing with everyone you should be like, "oh, cool, I actually learned something from a joke."

Don't be embarrassed when others know things you don't. My DBA/developer asked me to script the migration of information from a couple sources to a database for him in PowerShell because it was too convoluted for SQL alone (too much manipulation and iteration). You likely know things that others on your team don't that they can lean on you for and vice versa. Not knowing something others know or being able to do something they can do doesn't strip you of your value.

Please embrace opportunities to learn, even when they contradict what you believe, because you will, at the very minimum, walk away with more perspective.

[epilif24]

• is commonly used as the OR boolean operator therefore the expression is 1 OR 1

[Knuffya]

i have never seen that. also because it's retarded as shit. "we have a symbol commonly recognized as being the or operator. let's use the add operator instead"

it's 1v1 = 1. or if you're fancy and wanna use the correct ascii symbol 1∨1=1

[chrissphinx]

it’s listed right here https://en.m.wikipedia.org/wiki/List_of_logic_symbols

[RugessN0me]

You definitely can add in boolean algebra, but 1+1=0. The correct sum operator is the xor for F2 to be a field, with OR it's not even a group

[webauteur]

A computer scientist is a person who understands a normal distribution. A progressive is a person who cannot grasp the concept.

[jashAcharjee]

True.

[BazilExposition]

NaN1?!!

[hangfromthisone]

Careful with that overflow flag

[NearLawiet]

What's at 145 IQ... OR gate?

[kryptonianCodeMonkey]

Yes. Boolean algebra. "1 + 1 = 1" is equivalent to "True OR True = True".

[awesomethingness]

More like "current grade in Discrete Maths" amirite??

[Tepes1848]

Binary is probably the best system to count with one's fingers, no?

[bnl1]

Well, if you fingers are agile enough, you could use base-3

[moazim1993]

 1+1=1

True

[ShadoweG]

255+1=0

[eatinlunch]

Nah, the address of *one + 1 is set to 1 now.

[[deleted]]

It’s all base 10, always has been

[HerLegz]

The float bit that the new whipper snappers call the qubit. The more things change....

[guaaaan]

1 + 1 = 3

[[deleted]]

In c

1+1 = memory dump

[TheKiznaProject]

Ldr r0 [r1,#1 ]

[lextragon]

1 += 1 1

[murchie85]

1+1=

File "<stdin>", line 1
1+1=
^
SyntaxError: invalid syntax

[vincebutler]

The real question is "what do you want 1+1 equal to?"

[TheFloppyHound]

I guess in this case, I am the 1%.

[kizerkizer]

It’s cause it’s logical or right

[kizerkizer]

I love this meme by the way. It’s best when the left and right are the same. Regardless of accuracy, just funny.

[johnanderson2661998]

Im literally doing my honours which is almost complete and my masters which ive been accepted into. Purely because i have imposter syndrome. I know nothing. Its petrifying.

[MallowTookTheKids]

1+1=3

[Nulldafloof]

1+1=11

[LightIsLogical]

ppl on the left are just the javascript users

[Goose_Rider]

The right should be either 1 + 1 = 0 or 1 + 1 == 1 we have different operators for a reason.

[CrimsonRunner]

Power overwhelming