The Nineteenth Byte

12:08 AM

0

Stacking Pythagorean Triangles Sandbox note: I do not know whether or not this problem is trivially solvable. If it is not difficult enough, it is simple to rewrite this as a code-golf. A cursory glance tells me this problem is quite interesting from a mathematical standpoint. code-challengegeo...

BrainSteel

12:55 AM

Huh. I was thinking today, and I was just about to ask chat if anyone had considered a kind of swarm intelligence KOTH, and here I am, looking at a SI KOTH idea. It sounds awesome, by the way.

Nathan Merrill

1:58 AM

Hey, markdown question

I want to do several collapsable regions

but naturally, that isn't possible with stack overflow

Should I do hidden text with >! or code blocks?

Sp3000

Depends what you're using it for, I guess

In the extreme case, if you have a ton of stuff, there's always the stack snippet option

Nathan Merrill

2:14 AM

I don't like stack snippets

I find them intrusive and annoying

2

the only exception are for challenges that run in the snippets

@Sp3000 have you read the code bots 3 spec in the sandbox?

if you haven't that's fine, I just want to pass something by you

Sp3000

Nope sorry, been a bit busy this week so I haven't really checked the sandbox at all

Nathan Merrill

I'm considering what should be allowed, and what shouldn't

so, bots have multiple threads of execution

should I be allowed to stop an opponent's thread?

Sp3000

"The bot lives in a 2D toroidal word" world? (skimming spec now)

Nathan Merrill

thank you

Sp3000

If you can stop an opponent's threads, does that mean eventually you might be able to stop them from doing anything?

Nathan Merrill

2:25 AM

yes

Sp3000

I guess you could try testing a bot whose sole purpose is to screw over everyone else by stopping threads, and see how well that goes

Nathan Merrill

its tough to test bots, because I don't have truly competitive bots

Sp3000

Hmm yeah, that is a problem :/

Other than that, is Copy the only other attack?

Nathan Merrill

Start could be

Sp3000

Hmm okay. Well I'm kind of thinking no because I can imagine it being abused, but I think it might be good to get some other opinions as well

Nathan Merrill

2:35 AM

is it all that different than figuring out what line the bot is executing it and writing a stop to that line?

well, thank you for talking through it

I actually think I'm going to allow it

Sp3000

Ahaha no problem, sometimes the best way to debug is by talking to a rubber duck :)

Mitch Schwartz

@Lembik i started on the problem, you can see my brute forcers here, you can notice a similarity between the dp code and the recursive setup. solve1* are for the original problem, and solve2* are for the proposed generalisation ideone.com/33Ug8a

New Main Posts

0

Q: Code Bots 3: Parallel Programming Antipatterns

Welcome back! I'm excited to present the 3rd CodeBots challenge. This one has been a long time in the making. This challenge will be split up in 3 sections: the short version, the long version, and additional details. The Short Version Each competitor will write a 24-command program. These b...

king-of-the-hill

Mitch Schwartz

3:12 AM

@Lembik ideone.com/iTyREW

New Sandboxed Posts

3:27 AM

0

A: Sandbox for Proposed Challenges

KOTH Simpleton's Chess Introduction Disclaimer: The word "simpleton" is not meant to offend anyone who is simple or anything else. Don't take it personally, please. Do you find chess complicated? Is it difficult to remember all the pieces and how they move? Fear no more simple humans, as toda...

Rainbolt

The Mr. Robot pilot is incredible. Best pilot I've seen in a long long time.

Here's episode one: rainiertamayo.com/mrrobot/…

xnor

3:53 AM

is there a general consensus that golf entries can use non-printable characters?

Mitch Schwartz

4:06 AM

@Lembik ideone.com/qgjrTt

solve2d() is analogous to the N=165 code and has all the same optimisations

Doorknob

So, I did a thing that some of you might enjoy trying to decipher

CzarMatt

5:01 AM

Is there a suitable tag for most points rather than shortest points (usually bytes)?

I first thought KotH, but the tag description states "... the submissions interact with and compete against each other in some form of game".

BrainSteel

@Rainbolt You got me to watch that pilot. Wow. Thank you.

@CzarMatt Do we need a tag for that? Usually, things like that are kind of lumped into code-challenge, which is broad enough to cover such things. Or are you talking about code-bowling?

CzarMatt

5:27 AM

@BrainSteel Strictly speaking, a tag relating a particular scoring mechanism of say, X minus the number of bytes in your code.

But you're right, probably don't need a tag for that.

Lembik

5:46 AM

@MitchSchwartz thanks!

New Main Posts

6:52 AM

1

Q: How to get a solution to a puzzle having a function that gives the next possible steps in Haskell

I'm solving the Brigde and torch problem in Haskell. I wrote a function that given a state of the puzzle, as in which people have yet to cross and those who have crossed, gives back a list of all possible moves from one side to the other (moving two people forwards and one person backwards). m...

programming-puzzle haskell

Doorknob

why does that have an upvote... :/

Hi everyone

Hello!

Hi

@Doorknob How are you doing guys? :)

Doorknob

6:56 AM

@Katenkyo Pretty good, how about you?

Katenkyo

@Doorknob Pretty tired, but up for some for some code writing ! :)

Actually, up to write my controller for my Summoner War. It will be over soon ! \o/

Doorknob

Ooh, that one looks interesting!

Katenkyo

Thanks ! But pretty hard to prepare everything well ^^'.

Doorknob

Yeah, king of the hill is a tough one to do well :)

Katenkyo

And as there's a lot of datas, I want to do a good API that will provide everything you could imagine :2

@Doorknob Yeah, didn't think it would be so hard before I started it ^^

Doorknob

7:12 AM

It's fun, though! And I learned quite a bit from writing one of my KotH controllers (it helps that it was in C++, which is a language I had almost no experience with when I wrote it ;) )

Katenkyo

@Doorknob I should learn C++ one day, I love C and I think It could be interesting

Lembik

hi all

Katenkyo

Actually, mine is in java, and I already did a game working on local networks with this language, so there's not a lot of thing to learn ^^'

@Lembik Hi !

Lembik

7:25 AM

@Katenkyo learn nim instead :)

it rocks

the only problem is the current lack of users afaict

we should have a nim day where all the answers have to be in nim :)

Katenkyo

I think it'd prefer getting more into Lua, I see more use

But the idea of secured data is great

Lembik

@Katenkyo nim is great if you like python but hate how slow it is

or if you just like high level languages I think

@Katenkyo of course aren't you meant to learn rust rather than C++ :)

Katenkyo

7:40 AM

@Lembik Never wrote in Python :)

@Lembik I don't know rust ^^'

Oh, nevermind, heard of it.

Lembik

@Katenkyo you are missing out! Python is great in many ways (and terrible in a small number :) )

Katenkyo

@Lembik Yeah, but it wasn't something I learned from studies, and I prefered to learn lua when I had free time :)

Lembik

8:15 AM

@MitchSchwartz Hi.. I tried out your great new code.... it is interesting how the performance varies when you change N_MAX

@MitchSchwartz I posting a more difficult version as the previous one was clearly too easy :)

Lembik

8:40 AM

is it acceptable to say I will give 100 dollars to the red cross if someone comes up with a closed form solution for my new problem?

Katenkyo

@Lembik Only if you consider the red cross as being me

Lembik

@Katenkyo :)

@MitchSchwartz @Min_25 codegolf.stackexchange.com/questions/51624/…

New Main Posts

0

Q: Probabilities - how high can you go?

I previously asked a question for how to compute a probability quickly and accurately. However, evidently it was too easy as a closed form solution was given! Here is a more difficult version. This task is about writing code to compute a probability exactly and quickly. The output should be a ...

math fastest-code probability-theory

Lembik

hopefully this is more tricky :)

Katenkyo

8:58 AM

Hum, actually, the way I coded my controller for summoner wars could be easily adapted for a different format than 1v1, could be fun, will have to try that once finished :D

Lembik

I don't know what most of those words mean :)

@Jakube will you improve your answer or should I just accept it now?

well.. I just accepted it :)

Katenkyo

@Lembik Which words?

Lembik

summoner wars , 1v1

I assume the former is a game?

Katenkyo

It's a koth i'm actually dev'ing called Summoner War ^^

Lembik

ok

Katenkyo

9:12 AM

Specs aren't perfect on the sandbox, some things have to be re-written :3

Lembik

@Min_25 codegolf.stackexchange.com/questions/42299/… is another related problem that you might find interesting

Katenkyo

I hate math :'(

randomra

9:45 AM

it would be nice to visualize my boggle-board solution but can't find a tool for it :/

Mitch Schwartz

@Lembik each j has 1 minute, or there is 1 minute total?

Sp3000

@randomra Try one of the 2D languages, like SnakeEx?

Lembik

@MitchSchwartz each j gets one minute

@MitchSchwartz I almost added a bit saying I would give 100 dollars to charity if anyone came up with a closed form solution for this :)

@randomra we need more nice visualisation challenges I feel

@randomra leverage some people's 3d rendering skills :)

randomra

Ideally I would like something like this:

maybe I can link SnakeEx, and people can click through the matches

Mitch Schwartz

10:06 AM

@Lembik is my j=2 code fast enough on your computer?

Lembik

@MitchSchwartz yes! :)

@MitchSchwartz I was waiting for you to post that rather than me

but I did have a question.. it takes a very different amount of time to get to 30, say, depending on the pruning. If you get there quickly, does it that mean you don't have enough information to then go on to 100, say?

what I mean to say is, is exactly one threshold always the right answer?

Mitch Schwartz

we keep the information needed for N_MAX and discard the rest

Lembik

@MitchSchwartz ok.. but did you mention a 2 pass idea at some point?

I can't quite remember

Mitch Schwartz

after completion there is not enough information for N_MAX+1

Lembik

got you

Mitch Schwartz

10:12 AM

multiple pass would be for binary search to keep choosing different N_MAX values and starting over, so that the person running the program doesn't have to adjust N_MAX manually

Lembik

ok got you

do you think Min_25 has now left PPCG or might he still be around?

Mitch Schwartz

he mentioned that he would try the joy of X one

Lembik

@MitchSchwartz oh great!! Are you in separate email contact? I didn't see that comment here

Mitch Schwartz

no, he mentioned in chat

Lembik

oh ok... I must have missed that. In any case, I can't wait to see what he comes up with

Mitch Schwartz

10:16 AM

22 hours ago, by Min_25

About the Matrix problem, I will try it. :)

@Lembik so do you want me to include j=1 code in my answer?

since each j has its own time limit, it seems a bit superfluous

Lembik

@MitchSchwartz no need as you say.

@MitchSchwartz of course an even harder coding challenge would be code that worked well for different j's I suppose

rather than one script per j

thanks for finding the relevant part of the chat re: Min_25

Mitch Schwartz

well generalising my code in that way is doable but there is no point since it gets slower and slower

Lembik

@MitchSchwartz good point

@MitchSchwartz I did mention how much slower your code is in pypy than cpython to the pypy people

Mitch Schwartz

oh ok

i'm not very familiar with pypy

i had before experienced a similar thing with psyco

Lembik

it seems you have found a worst case for a tracing compiler so it's likely they can't do much sadly

New Main Posts

10:29 AM

0

Q: Schrödinger's Laser

Fed up with experimenting on tiny domestic animals, Nobel prize-winning Edwin Schrödinger has decided to find the nearest laser and shoot it at things instead. Because... science! Description You will be given two points that the laser passes through and the size of the laser, and you must dete...

code-golf

Lembik

10:53 AM

@MitchSchwartz you are winning ! :)

Mitch Schwartz

oh i only just noticed my dyslexia

N_MAX and MAX_N

Lembik

:)

you have quite a lot of time spare ....

Mitch Schwartz

never enough though :)

Lembik

:)

Mitch Schwartz

now that's funny

Lembik

10:57 AM

it would be nice if one could use the closed formula for j =1 somehow to speed up j > 1

Mitch Schwartz

i did not notice that you switched the two words until checking the message history

Lembik

:)

Mitch Schwartz

11:17 AM

@Lembik did you have any other questions about how the dp works

it has many similarities to the recursive brute forcers that i wrote

solve1b() and solve2b()

Doorknob

colors.rgb("blue") yields "#0000FF". colors.rgb("yellowish blue") yields NaN. colors.sort() yields "rainbow"

6

Katenkyo

What the fuck...

randomra

seems like a good golfing language

Katenkyo

I love the >2+2 =>DONE

Doorknob

My personal favorite is the floating point NaN :)

Katenkyo

11:26 AM

It's pretty funny y

Lembik

@MitchSchwartz I still haven't written it out top down in math yet. I plan to do that then I may come back to you if that is OK

Mitch Schwartz

sure no problem

actually, your "in math" got me thinking, maybe i can write it concisely and include it in the answer

the 1,0,0,-1 part seems a bit annoying to write though

Lembik

@MitchSchwartz that would be very nice

Mitch Schwartz

11:41 AM

$ b \in (1,0,0,-1) $ would be interpreted as equivalent to $ b \in (1,0,-1) $

Lembik

there is always a multiset if you need it

Multiset

In mathematics, a multiset (or bag) is a generalization of the concept of a set that, unlike a set, allows multiple instances of the multiset's elements. The multiplicity of an element is the number of instances of the element in a specific multiset. For example, an infinite number of multisets exist which contain elements a and b, varying only by multiplicity: The unique set {a, b} contains only elements a and b, each having multiplicity 1 In multiset {a, a, b}, a has multiplicity 2 and b has multiplicity 1 In multiset {a, a, a, b, b, b}, a and b both have multiplicity 3 Nicolaas Govert de Bruijn...

proofwiki.org/wiki/Definition:Multiset#Notation

Mitch Schwartz

would you think \sum_{a \in {0,0}} 1 $

pressed enter when trying to press shift

$ \sum_{a \in \{0,0\}} 1 $ equals 1 or 2?

Lembik

you can edit previous lines in chat

Mitch Schwartz

i know but wasn't sure if 2 minutes would be enough

Lembik

the problem is the notation ...maybe $\{\{0,0\}\}$ ?

I quite like math.stackexchange.com/questions/152223/… :)

basically you need to say upfront what notation you are using.. there isn't really a standard one

Mitch Schwartz

11:48 AM

you don't think there's a consensus on whether my expression equals 1 or 2?

Lembik

@MitchSchwartz I don't think there is a consensus on the right notation to use for a multiset

Mitch Schwartz

oh, that

well i was using tuples to begin with anyway, until you mentioned multiset

$ \sum_{a \in (0,0)} 1 $ equals 1 or 2?

Lembik

2

Mitch Schwartz

ok

thanks

Lembik

np

@MitchSchwartz oh and .. in case you were interested.. the j = 1 answer is asymptotically 2/{pi n) :)

I suspect the j = 2 answer is C/n^{3/2} for some C asymptotically but I don't know what that C is

so it's a guess currently

Mitch Schwartz

12:03 PM

cool :)

Lembik

do you use irc?

actually. I have to go

chat later

aditsu

@Doorknob hmm, all those things kinda make sense, except RANGE(1,5) and maybe +2 too... and I'm not really sure about 2+2

Mitch Schwartz

@Lembik i think i wrote this correctly, without including the base cases: $ f(a_1,a_2,b_1,b_2,s,t,u) = \sum_{a \in (-1,1)} \sum_{b \in (-1,0,0,1)} f(a,a_1,b,b_1,s-a_2b_2,t-a_1b_2,u-ab_2) $

i'm not sure that is clarifies anything though

and yeah, i idle in a few freenode channels but they're pretty inactive

Doorknob

@aditsu I wrote up a quick explanation (there are also some interesting theories in the Discussion section at the bottom), but yeah, those made the least sense to me too.

Mitch Schwartz

well actually, #esoteric is active

aditsu

12:09 PM

@Doorknob oh, YOU wrote that??? haha

Doorknob

yep ^.^ (I'm KeyboardFire basically everywhere except SE)

Mitch Schwartz

@Lembik whoops, i forgot to include n in the above

aditsu

I didn't check the user names

oooh! I get it now

2+2 actually does 2+=2

oh, everything is explained now, and a couple of typos are fixed too; I wonder when that happened, as the timestamps in the page history don't seem to make sense

I guess their clock is running on UTC+17min

@Doorknob alright, so now it all makes sense, we should implement it!

Doorknob

haha, PPCG challenge time? :D

@aditsu Ahhh, that makes much more sense.

Mitch Schwartz

@Lembik the base case should be to make sure that (s,t,u) are consistent with (a1,a2,b1,b2) -- i.e. s == a1*b1 + a2*b2, t == a2*b1, and u == 0, and return a 1 if that's true, otherwise 0

aditsu

12:21 PM

I'm not sure if it can make a nice challenge.. I just think it would be fun to implement

New Meta Posts

12:49 PM

0

Q: A new javascript KOTH challenge, Fastest gun of the west!

Sometime ago i wanted to make a KOTH challenge, but i wanted it to be more interactive and easier to test, i didnt really come up with anything good. But then i saw this awesome thing Red vs. Blue - Pixel Team Battlebots from calvins-hobbies. Essentialy it pulled the code directly from the answer...

discussion sandbox

Katenkyo

@NewMetaPosts Hum, it isn't in the sandbox, but is a sandbox in itself

Cool Guy

Isn't the above meta question supposed to be in the sandbox?

Katenkyo

@CoolGuy Yes it is, I'm glad i'm not the only one to notice x)

Geobits

It's like CH has done with snippet-koth. If it's pulling directly from answers, the real sandbox isn't helpful for testing that.

Katenkyo

@Geobits Ho, didn't think about testing this part !

Cool Guy

12:55 PM

Damn, I like KOTHs but I don't know JS :(

Katenkyo

@CoolGuy Js is pretty simple, it's a really basic function-oriented language

Geobits

Yea, he first asked about it here.

Katenkyo

If you know a little bit of OOP you'll be able to use it :)

Lembik

@MitchSchwartz looks good

randomra

I used Python copy.deepcopy and it was more than 100 times slower than a manual deepcopy...

Lembik

12:57 PM

@randomra that seems quite buggy!

Cool Guy

@Katenkyo I know Java (not much) and C. (And some python3). Which one of these is the most similar one to JS?

Lembik

@CoolGuy err...none of them really

sorry

I suppose C is furthest

randomra

@Lembik not sure yet why

Katenkyo

@CoolGuy Java will be helpful for the OOP side :)

Lembik

maybe someone should make a map of languages where distance on the map is some distance in terms of the languages

randomra

12:58 PM

the class is a couple lists and ints

Katenkyo

@Lembik Basically, you already could sort the languages in categories

Rainbolt

@BrainSteel Haha no problem

Katenkyo

Object-oriented , Imperative, Stack-Oriented

Pretty everything else is sub-categories

Lembik

languages made just for PPCG :)

Katenkyo

They usually fall under those 3 categories :)

Geobits

1:02 PM

You forgot chicken oriented :P

Katenkyo

@Geobits it's stack oriented :D

aditsu

@CoolGuy javascript kinda imitates java... but only superficially

Cool Guy

What about function-oriented?

Rainbolt

@aditsu No it doesn't. It only got the name JavaScript because the name it had before was not very marketable.

Geobits

@Katenkyo No, stacks are chicken-oriented.

aditsu

1:05 PM

@Rainbolt it does.. many method names, Math, Date and stuff are similar, but the type system is completely different

Lembik

ooh right.. functional languages didn't get a look in!

poor old Haskell

Katenkyo

@CoolGuy Function-oriented is a type of Object-Oriented, or OO is a type of FO, I can't tell

Cool Guy

and C.

Lembik

@Katenkyo neither

Rainbolt

@aditsu Well yea, find me a language that doesn't have a Date and a Math class in stdlib that is popular in the work environment.

Katenkyo

1:06 PM

@Lembik It's kinda like

Lembik

@Katenkyo why do you say that?

aditsu

@Rainbolt it's not about having them, but about using the same syntax and naming

Lembik

I have to go again.. bye

Katenkyo

@Lembik If you handle the concept of Object Oriented, you can handle the Function Oriented one, and vice-versa

@Lembik Bye

Geobits

> A common misconception is that JavaScript is similar or closely related to Java. It is true that both have a C-like syntax (the C language being their most immediate common ancestor language). They also are both typically sandboxed (when used inside a browser), and JavaScript was designed with Java's syntax and standard library in mind. In particular, all Java keywords were reserved in original JavaScript, JavaScript's standard library follows Java's naming conventions, and JavaScript's Math and Date objects are based on classes from Java 1.0,[117] but the similarities end there.

Rainbolt

1:08 PM

@aditsu C#'s syntax is closer, and by naming I'm assuming you mean camelCase? It is not exactly unique to JavaScript and Java

Geobits

Depending on how much you trust Wikipedia ;)

Rainbolt

Oh, I stand corrected lol

The guy I just listened to at Visual Studio Live lied

Katenkyo

@Rainbolt As I assume Visual Studio is a buggy IDE, this guy must have been Buggy too :)

@Geobits I think it's pretty accurate

Geobits

There's also this:

> The change of name from LiveScript to JavaScript roughly coincided with Netscape adding support for Java technology in its Netscape Navigator web browser. The final choice of name caused confusion, giving the impression that the language was a spin-off of the Java programming language, and the choice has been characterized as a marketing ploy by Netscape to give JavaScript the cachet of what was then the hot new web programming language.

aditsu

@Rainbolt no, I mean things like array.length, "foo".charAt(1), Math.floor(2.7), new Date().getYear() etc - you can literally copy them between java and js and they work the same

Agawa001

1:11 PM

@Doorknob about ur last (and not the first) warrant , u must know that , im not here to flag or offend people , i know many of my posts got flagged / downvoted / vlosed under diverse reasons by (not fortuitously) same persons always . so regarding you position as moderator , u have the right to take any directive u want , but be sure that -I m not gonna change my behavior- thanks .

Geobits

@aditsu Weren't many of those things just lifted from C libraries (and adjusted slightly to match naming conventions)?

Cool Guy

Is HTML/CSS knowledge required for learning JS?

Rainbolt

No

Katenkyo

@CoolGuy Not at all

aditsu

@Geobits I don't see anything there that looks like C

Rainbolt

1:14 PM

JavaScript as I understand it has two major uses. Node.js (and probably other things like it) allows it to be a server, and you can just write server side code in JavaScript (this is the half that I am not familiar with). The other major use is for client side code in a web browser.

Katenkyo

@Rainbolt By the way, JS function starts by lowerCase, and C# functions start by UpperCase no?

Rainbolt

Syntax and naming conventions are not the same

Cool Guy

oh ok.

I guess I'll look into it later.

Rainbolt

C# and Java share a syntax, and JavaScript and Java share a naming convention

Katenkyo

@Rainbolt Yeah, but usually, following the same syntax imply following the naming convention

aditsu

1:16 PM

@Geobits that's a good quote, I was mainly referring to the "JavaScript was designed with Java's syntax and standard library in mind" part

Rainbolt

Syntax means semicolons, line breaks, using parentheses to call a function, etc.

Geobits

Yea, the syntax is similar (enough to throw even more fuel on the fire that they were trying to copy Java for popularity's sake), but the god-awful prototyping system makes me puke.

trichoplax

I'm trying to write JS at the moment. Just found out that if(array) proceeds as if array is true, even if the array is empty.

I don't mind the effort of debugging if I can find out at the end that it was my fault

Geobits

@trichoplax The easiest way to write js is to never trust that any comparison will make sense :P

trichoplax

lol I'm learning this...

Geobits

1:19 PM

Stay paranoid ;)

trichoplax

if(array.length) works, but I wasted a lot of time finding that out the hard way

Oh well :)

aditsu

an easy way I found to write js is to write java and compile it using gwt :)

Geobits

I'm sad that google decided to can the Dart-as-a-separate-thing idea. They recently said they're not even working on making it do anything except compile to js.

Vioz-

I've never heard of Dart

Doorknob

I've been meaning to check it out, but I never have.

Geobits

1:28 PM

I've played with it a bit, but nothing very serious. It's not perfect, but I like it far more than js.

I'd hoped that they could use their google-power to disrupt things more, but they backed down on "fragmenting the web" ><

Doorknob

@trichoplax if (array.length !== 0)—readability > succinctness. Also avoids annoying bugs like yours.

(of course, PPCG has the opposite motto) ;)

Geobits

I think he wanted !== there, but yea, that's the proper amount of paranoia.

Doorknob

Ah, right

Vioz-

Wait a second, so is equality in JS checked with three equals signs?

Doorknob

=== is strict equality, == type-coerces first.

== leads to all sorts of weirdness. My recommendation: always use === and !==.

Nathan Merrill

1:35 PM

4 equal signs checks for scope equality

Doorknob

We already went over this, hehe

How many =s did it eventually end up becoming again?

Nathan Merrill

that's why I said it

5

Vioz-

That's.. interesting

Nathan Merrill

5 equal signs checks for identity

Doorknob

And ====== is just never true

Nathan Merrill

1:36 PM

so, only the exact same variable ===== itself

lol

Geobits

@Vioz- Start here:

2 days ago, by Lembik

does it really have === ??

Doorknob

@Vioz-:

2651

Q: Does it matter which equals operator (== vs ===) I use in JavaScript comparisons?

I'm using JSLint to go through JavaScript, and it's returning many suggestions to replace == (two equals signs) with === (three equals signs) when doing things like comparing idSele_UNVEHtype.value.length == 0 inside of an if statement. Is there a performance benefit to replacing == with ===? ...

javascript operators equality equality-operator identity-operator

trichoplax

@Doorknob Since I'm working on a KotH answer rather than a golf that's a good point - I'll include the !== 0 (so I can read it myself, if nothing else...)

aditsu

how many js equal signs does it take to change a lightbulb?

Doorknob

Trick question, lightbulb is immutable and can't be changed.

Geobits

1:37 PM

One: lightbulb = ...

Doorknob

in Tavern on the Meta on Meta Stack Exchange Chat, May 17 '13 at 2:17, by Doorknob

I made a joke :D
Q: How many Stack Overflow users does it take to change a lightbulb?
A: 9. One to ask the question, five to close it as Off Topic, and three to delete it. :P

3

aditsu

so true

Geobits

You forgot the one or two that comment about how it's not off topic and the quickly inserted spam answer.

aditsu

it applies to many if not most on-topic questions

trichoplax

The code for my KotH answer doesn't seem to be getting any closer to working, but it is getting longer and longer

8

Katenkyo

1:57 PM