The Nineteenth Byte

mınxomaτ

8:00 PM

Why should it. It's PHP

Cᴏɴᴏʀ O'Bʀɪᴇɴ

^ XD

Anonymous

I'm trying to make sure empty values aren't being passed in through a POST request

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Does anyone have a TI-30X IIS calculator?

Anonymous

So I have something like if(empty($_POST['val1']) || empty($_POST['val2']) || empty($_POST['val3'])) { do_stuff(); }

mınxomaτ

Use isset() and/or empty().

Super-Ninja.

quintopia

8:03 PM

is there a shorter equivalent for i/3*3 in Python 2?

Anonymous

The values are the values of radio buttons from a page with a form, and thus would only be empty if either I messed up in writing the form (survey says no), or if one of the sets of radio buttons wasn't selected

Easterly Irk

you mean i/(9)?

@quintopia You just want i floored?

try i//1

Anonymous

@EasterlyIrk Nope, order of operations. (i/3)*3

mınxomaτ

^

Easterly Irk

@Mego So i floored.

quintopia

8:04 PM

round i to the nearest multiple of 3

Easterly Irk

oh okay

quintopia

erm

floor it to

rather

Anonymous

i-i%3 is the same length

El'endia Starman

Well, since it's Python 2, does // even work?

Easterly Irk

I don't think so.

@El'endiaStarman yes actually.

quintopia

8:05 PM

after 2.7 maybe

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Does python have imaginary numbers? o-O

Easterly Irk

Yes.

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ Yes, complex number support is built-in.

Lembik

hi all

Easterly Irk

ohai

mınxomaτ

8:05 PM

@Mego Actually you have to use both functions I mentioned. Since the parameter could be a) not there or b) set to nothing.

Anonymous

@El'endiaStarman Yep, // is always int division in 2.7

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman Python 3?

El'endia Starman

@EasterlyIrk Not anymore! :P

Anonymous

@mınxomaτ empty returns true if isset returns true

Lembik

there is a distinction being made by PPCG people between the time complexity of an algorithm and the time complexity of an implementation of an algorithm

I am not familiar with this distinction and have never seen it before

Easterly Irk

8:06 PM

@El'endiaStarman :/

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Python 3.4.2 (v3.4.2:ab2c023a9432, Oct  6 2014, 22:15:05) [MSC v.1600 32 bit (In
tel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> 3i
  File "<stdin>", line 1
    3i
     ^
SyntaxError: invalid syntax
>>> 3+i
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
NameError: name 'i' is not defined
>>>

Lembik

is this something common?

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ Use j.

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ j, not i

mınxomaτ

@Mego Maybe abuse array-key-exists?

Anonymous

8:06 PM

ninio'd

Easterly Irk

@CᴏɴᴏʀO'Bʀɪᴇɴ use j

ninja'ed

quintopia

@Lembik the time complexity of an algorithm is sometimes given relative to the complexity of a subroutine, particularly a library subroutine

Easterly Irk

>>> 123j
123j

El'endia Starman

The Python devs came from more of an engineering background than a math background, hence j instead of i.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

But 3+j errors. ಠ_ಠ

FryAmTheEggman

8:07 PM

@Lembik that seems like a complicated enough question to ask on meta

Easterly Irk

@CᴏɴᴏʀO'Bʀɪᴇɴ Only multiplication.

Anonymous

@CᴏɴᴏʀO'Bʀɪᴇɴ 3+1j

FryAmTheEggman

(also idk how common it is, sorry)

Easterly Irk

Try 3+1j.

ninja'ed

Lembik

@quintopia right but people are giving O(n^2) implementations and are claiming they are O(n log n ) algorithms

El'endia Starman

8:07 PM

I'm planning on making 1i the imaginary unit in Pytek, and maybe 1j too.

Lembik

which I just find odd

Easterly Irk

@El'endiaStarman both pls

quintopia

@Lembik show me

Cᴏɴᴏʀ O'Bʀɪᴇɴ

I know that works, I just don't understand why 2+j doesn't. :P

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ j could be a variable that way.

Lembik

8:07 PM

@quintopia codegolf.stackexchange.com/a/76086/9206

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman Why not just have j be the imaginary unit though?

quintopia

@CᴏɴᴏʀO'Bʀɪᴇɴ j as the suffix to a digit is the specifier of imaginary. j by itself is assumed a variable

it works like the same as e and L

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ ......because j is a really common counting variable.

Lembik

@quintopia codegolf.stackexchange.com/a/76053/9206

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@quintopia I guess that makes sense.

Anonymous

8:08 PM

@CᴏɴᴏʀO'Bʀɪᴇɴ Because j is different than 1j. The second uses j as a suffix, like L in C. The first is referring to the variable j (vars()['j'])

Cᴏɴᴏʀ O'Bʀɪᴇɴ

OMIGERD

STOP WITH THE GD PINGS

El'endia Starman

@CᴏɴᴏʀO'Bʀɪᴇɴ ...sorry? :P

Anonymous

Stop asking questions in a busy chatroom where the only reasonable way to respond is with the reply button if you're annoyed by pings

El'endia Starman

^ there are two conversations going on at the moment.

Anonymous

@mınxomaτ I'm not sure that would solve anything

El'endia Starman

8:09 PM

Well, actually, the bigger problem is that there are three or four people in here who are trying to answer @CᴏɴᴏʀO'Bʀɪᴇɴ's Python questions before someone else does. :P

quintopia

@Lembik @Lembik the merge sort one I think is saying that it runs in O(n log n) pop operations?

Alex A.

@El'endiaStarman 1i, 1j, 1k. Quaternions FTW.

Lembik

@quintopia right.. but that's no good

El'endia Starman

@AlexA. That is a possibility. That would clash with using 1j as an imaginary unit though.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego I asked one question, to one person.

Anonymous

8:11 PM

6 mins ago, by Cᴏɴᴏʀ O'Bʀɪᴇɴ

Does python have imaginary numbers? o-O

Anonymous

You didn't address a single person

quintopia

@Lembik nonetheless, it is common in CS to assume certain operations are "units".

Alex A.

@El'endiaStarman Well, you wouldn't be able to intermix them in a single expression, but you still have i^2 = j^2 = k^2 = -1.

So it would effectively work the same

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Mego Then El'endia responded, and I found someone to answer my question:

6 mins ago, by Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman Python 3?

Anonymous

@mınxomaτ If you'd like to see the problem in action, the site is live at ppcg-election-mego.c9users.io

El'endia Starman

8:12 PM

@CᴏɴᴏʀO'Bʀɪᴇɴ Aside from Mego's point, it's common for people to answer questions addressed to another person.

Alex A.

But you also have the benefit of being able to work in quaternions should you need to do so

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@El'endiaStarman mehh

Anonymous

You're literally being annoyed because people are being helpful

quintopia

@El'endiaStarman And it is very much in the spirit of this site for many people to answer a single question

Anonymous

Your message is loud and clear; we won't help you next time :)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

8:13 PM

@Mego Is that your problem?

@Mego <3 you too m8

Lembik

@quintopia right no one assumes things that run in linear time as units

El'endia Starman

@AlexA. .....ooooh, yes. That makes it easy, actually. I can treat all complex numbers as quaternions! :D

(With caveats, of course, but still.)

flawr

This is amazing: apollo17.org

quintopia

@Lembik But it's not uncommon for pop to be implemented in constant time, it just happens to not be implemented that way in those particular cases. If one did not know the underlying python implementation details, it would be easy for someone to confuse the two.

Alex A.

@El'endiaStarman :D That'd be awesome! Just make sure you have your multiplication table set up, so you have identities like 1i * 1j = 1k

El'endia Starman

8:15 PM

@flawr woooaaahhh...

@AlexA. Of course.

Anonymous

Oh god I'm an idiot

Anonymous

Wrong indices >_<

Lembik

@quintopia true..but they do know!

quintopia

@Lembik I'm not saying that they were following instructions or doing the right thing. I'm saying that someone with a computer science background could easily be unsure of what they were allowed to assume here.

Lembik

@quintopia true

Anonymous

8:17 PM

Best PPCG election survey is now up! ppcg-election-mego.c9users.io

Anonymous

It's exactly like SE elections, except that you must use all 3 votes

zyabin101

@Mego It asks me to sign into c9.

Anonymous

@zyabin101 That's... not right

Anonymous

Try ppcg-election-mego.c9users.io/election.php

Anonymous

Huh that doesn't work either

Anonymous

8:19 PM

That's silly

Anonymous

Oh well, there went 3 hours of my life I'll never get back, working on PHP

TimmyD

Wow, the language-specific meta is contentious

+4/-3 for "Yes, disallow them" versus +3/-2 for "No, they're allowed"

Alex A.

Not as contentious as the state of chat

mınxomaτ

@Mego Even when signed in it says "Not authorized"

TimmyD

@AlexA. ???

Alex A.

8:27 PM

@TimmyD This

Easterly Irk

@Mego try adding us as owners.

Anonymous

Try now

Easterly Irk

\o/

Anonymous

I clicked the wrong setting when I made it

Easterly Irk

Did you see Martin's name?????

> Martin BÃ¼ttner

Anonymous

8:35 PM

It shows up correctly for me

Anonymous

Make sure your browser is using UTF-8

Easterly Irk

And you have a SQL error.

Anonymous

What error?

Easterly Irk

> Failed to insert row (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Brien', 'CoolestVeto', 'El'endia Starman')' at line 1

zyabin101

@EasterlyIrk Martin Bãttner * ¼? Seems cool.

Easterly Irk

8:36 PM

^

Anonymous

Ahh, I failed to escape stuff

Easterly Irk

yep

@MartinBüttner according to my browser's unicode rendering, you are now @MartinBÃ¼ttner.

tac

Feb 15 at 18:02, by mbomb007

Anonymous

Try now

tac

new logo!!

Anonymous

8:37 PM

@EasterlyIrk That would be Latin-1

tac

i'm so entertained by this picture.

zyabin101

@EasterlyIrk "Martin BÃ¼ttner? Sounds cool."---Martin Buttner "ninja'd"---zyabin101

Easterly Irk

@Mego works.

@zyabin101 what?

Can I get more votes for this:

7

Q: Should language-specific code golf challenges be explicitly disallowed?

In light of a recent code golf challenge in which the specification restricts participation to JavaScript, I think it's time we revisited making a hard rule about language-specific golfs. We may discourage such challenges, but ultimately they aren't off topic. Consider Sklivvz's comment: Eith...

Anonymous

Huh... The IP fields are weird

Anonymous

They're all 10.240.0.*

Anonymous

8:39 PM

Which is... not correct

zyabin101

Martin Bгjttner? Sounds cool.

Anonymous

And will certainly cause issues

TimmyD

@AlexA. Huh. Dennis' answer seems to be the runaway favorite, though. +25/-3

zyabin101

The jagged rendering of the name Martin Büttner got me Гj instead of ü in the name.

Easterly Irk

Link to a conversation made entirely from animated gifs?

Anonymous

8:43 PM

There, I killed the current DB and did better IP detection

Anonymous

So re-cast your votes: ppcg-election-mego.c9users.io

Easterly Irk

Give a better dupe vote message pls.

Anonymous

Nah

Easterly Irk

"Failed to insert row (1062): Duplicate entry '172.249.47.98' for key 'PRIMARY'" is a bad one.

Anonymous

Too lazy

Easterly Irk

8:44 PM

@Mego Maybe "no moar moderation avocad for you"?

Anonymous

No that's stupid

Easterly Irk

Yeah.

This is quite disturbing:

buzzfeed.com/beckybarnicoat/…

zyabin101

@Mego Maybe "You have already cast your vote, didn't you?"

Easterly Irk

.

zyabin101

..

quartata

9:08 PM

> Martin BÃ¼ttner

You and your encoding junk

Are you encoding in ISO 8859-1 or something

ROFL you're using CP-1252

why

El'endia Starman

9:22 PM

@flawr That's a "Labor of Love" website if I ever saw one.

phase

@Mego what's dat?

epicTCK

testing a chatbot that I wrote this time (last time was not my work), it will copy you

ill take it off i just need someone to say literally anything

Alex A.

Literally anything

epicTCK

Literally anything

Wut!

phase

Literally anything

Dennis

9:26 PM

anything

epicTCK

anything

Alex A.

Literally!

Dennis

(You guys aren't listening.)

phase

something

epicTCK

something

phase

9:26 PM

somewhere

over the rainbow

epicTCK

over the rainbow

flawr

@El'endiaStarman The first blog post from 2012, released just in december!

epicTCK

@El'endiaStarman The first blog post from 2012, released just in december!

Dennis

We have a dedicated room for bot testing btw.

epicTCK

it lags 6 seconds

phase

9:26 PM

@AlexA.

epicTCK

down now.

Alex A.

@Mego Btw, when can we see the results?

epicTCK

@Mego Btw, when can we see the results?

Dennis

Not that down.

Alex A.

@epicTCK You sure? :P

El'endia Starman

9:27 PM

@epicTCK You better turn off the bot asap...

epicTCK

Ok its down... I think

flawr

@epicTCK wtf?

epicTCK

yup

flawr

I think we have other rooms for testing bots, don't we?

mınxomaτ

The content to message ratio is at the monthly low point I see.

4

Dennis

9:27 PM

♦ Beep Boop Bingus Bin

VITRIFICATION ORDER (1947) CONDEMNED DO NOT ENTER

epicTCK

@flawr testing a chatbot its gone now

Dennis

@mınxomaτ Still got nothing on carrot chains though.

Alex A.

> chotbot

epicTCK

@Dennis Beep Bog Maggot was epmty at the time i was testing, the bot is gone now.

Dennis

Wouldn't it be easier to just ask us to join BBM?

Alex A.

9:30 PM

Big, Burly Men?

phase

<s>Big Black Man</s>

how does one scratch out?

Dennis

~~like this~~

Helka Homba

~~threedashes~~

phase

@HelkaHomba new MC skin?

~~test~~

wow this is a great feautre

El'endia Starman

> feautre

Helka Homba

9:32 PM

@phase No, Belgian flag

El'endia Starman

ಠ_ಠ

3

phase

@HelkaHomba don't go anywhere beceause I want to talk to you but lunch is calling so brbrbr

Dennis

39

Q: Humans can now run 40 mph. How do I keep the stupid people alive?

Let's assume that humans can now run 40 mph and the human body can handle it. I know and understand that this is not feasible, but let's just play pretend. Naturally people would have all kinds of fun, but as we all know most people are idiots. I imagine that there would be millions of people who...

science-based reality-check government

science-based lmao

El'endia Starman

You don't. Darwin will have his way. — user16295 2 days ago

quartata

bwahahahaha

Easterly Irk

9:40 PM

^

CoolestVeto

@HelkaHomba Can you link me to the thing you used to create a side view of the MC world?

Easterly Irk

^

CoolestVeto

@Dennis I read this already. :D

Easterly Irk

@CoolestVeto BTW did you see that @CᴏɴᴏʀO'Bʀɪᴇɴ moved into your/mine/our minecraft house also?

and ^^

Helka Homba

in PPCG Minecraft Server, Mar 1 at 18:37, by zyabin101

http://wrim.pl/mcmap/

Easterly Irk

9:42 PM

oooooh coool

CoolestVeto

@EasterlyIrk :D No, but cool!

Feel free to offer that to anyone, btw.

Easterly Irk

okai

epicTCK

@Dennis yeah probobly

Easterly Irk

He sorta lives in my roomy thingy

@CoolestVeto to mc chat pls

epicTCK

@EasterlyIrk could you help me test my chatbot? in bbm

CoolestVeto

9:43 PM

@HelkaHomba How do I compile programs in this language?

(I don't do... C?)

Easterly Irk

^

euegegh windows .exe

well i just installed win7, so....

quartata

Use Wine or Mono.

Easterly Irk

will do.

Cyoce

Which makes more sense? [1, 2, 3, 4, 5] { print } each or { print } [1, 2, 3, 4, 5] each

(to print 1, 2, 3, 4, 5)

Zgarb

@Cyoce Whichever is more consistent with the rest of the syntax.

Cyoce

9:47 PM

@Zgarb the rest of the syntax I have so far is not relevant to this one :(. They all deal with having a number of blocks, whereas this one has a block and an iterable.

Zgarb

Ah okay, so the syntax is stack-based and the { print } is a block.

epicTCK

anyone wanna test my chatbot in bbm

Cyoce

Right now all I have in terms of blocks is { body } { condition } while

@Zgarb yes

Helka Homba

@EasterlyIrk Why wouldn't an exe run on win7?

Zgarb

@Cyoce With that, I think it would make more sense to have { print } [1, 2, 3, 4, 5] each

Easterly Irk

9:50 PM

@flawr stahp trolling

Cyoce

ok

github.com/cyoce/Cy/blob/master/README.md#blocks-and-functions

Easterly Irk

@HelkaHomba I use os x normally.

I just installing win7 on a vm today.

Zgarb

The { print } is the "body", and [1, 2, 3, 4, 5] is the "thing that controls how the body is executed".

Aka the "condition".

Cyoce

makes sense (ish)

And what's a general name for all the constructions of if-statement, for-loop, while loop, etc.?

Zgarb

@Cyoce Control structure?

Cyoce

9:58 PM

there we go thanks

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EasterlyIrk Was I summoned?

Easterly Irk

eh, just a pre-emptive ping if he kicked you out.

@CᴏɴᴏʀO'Bʀɪᴇɴ but moar comix

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EasterlyIrk Kk, you'll have one today (probably)

El'endia Starman

@Cyoce Their use is usually called "control flow".

Cyoce

@El'endiaStarman yeah that's what I have now

Easterly Irk

10:07 PM

@CᴏɴᴏʀO'Bʀɪᴇɴ s/probably/for sure/

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EasterlyIrk s/for sure/probably for sure/

El'endia Starman

> $('#datepicker').val().split('/').map(parseInt)
< [3, NaN, NaN]

Should be [3, 17, 2016]. @CᴏɴᴏʀO'Bʀɪᴇɴ, how fix?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

eugh

.map(Number).

parseInt takes three args.

It happens to everyone.

El'endia Starman

Thanks! :)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

No prob ^_^

Easterly Irk

10:14 PM

@CᴏɴᴏʀO'Bʀɪᴇɴ refreshing the blog constantly, but no change........

> Read everything. There is random information. get to work

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EasterlyIrk ಠ_ಠ

Easterly Irk

s/Read everything. There random information.//

Cᴏɴᴏʀ O'Bʀɪᴇɴ

That was in reference to the code in the picture.

Easterly Irk

what?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

My most recent comment is a code.

Easterly Irk

10:15 PM

yah

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Did you get it?

Easterly Irk

nope

Cᴏɴᴏʀ O'Bʀɪᴇɴ

:3

Link me to your explain, again?

CoolestVeto

> your explain

Cᴏɴᴏʀ O'Bʀɪᴇɴ

No, that's correct.

He has an explain.

Easterly Irk

10:16 PM

rofl

With no explanations....

explaincergos.blogspot.com

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Hint: binary.

Dennis

I know it shouldn't anymore, but it still surprises me how people pick the answers they upvote. Four answer to the same challenge: 1. Killer 67-byte Python answer. +9 2. My 84-byte Python answer. +30 3. 34-byte Pyth answer. +12 4. My 20-byte Jelly answer. +7

It can't be language bias. It can't be poster bias. What is it?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Time of posting?

A combination of multiple factors?

quartata

It's time of posting (usually).

Quill

Insanity?

Easterly Irk

10:19 PM

^

morning @Quill

Dennis

Nope. I posted the Jelly answer before the Python answer. The Python answer basically ripped the Jelly answer off.

@Quill By exclusion, the only reasonable explanation.

quartata

Activity? People probably sort by active.

OK, now without making any changes to my code I'm getting an EOF when trying to post to the chatroom with my Ruby script.

This is ridiculous.

Dennis

@quartata I don't think that's true. Anyway, the Jelly answer has twice as many revisions.

Alex A.

Woo, 5 stars on my Vim plugin, 2 from people I don't know! And 15 downloads from vim.org!

I'm basically a celebrity

4

Easterly Irk

You were already.

You were known as the god of avocad, for making the holiness known to mankind.

Quill

10:22 PM

Move over Tom Cruise, here comes AlexA.

4

Easterly Irk

All hail @AlexA.

Alex A.

@EasterlyIrk ( ͡♥ ͜ʖ ͡♥)

quartata

Doorknob's mkcast has 3,000 stars

El'endia Starman

@quartata I normally have sorting set to votes.

Alex A.

@quartata Yeah, but Doorknob is good at things.

quartata

10:23 PM

@AlexA. Ah, right. Forgot.

Easterly Irk

rofl

quartata

@Doorknob Have you used Net::HTTP before?

Cyoce

so then probably zipwith would be implemented { + } [1, 2] [3, 4] zipwith #=> [4, 6]

quartata

Also, how on earth did I get things done before without sl

Truly the greatest unix utility of all time

Easterly Irk

yep

very useful...

Cᴏɴᴏʀ O'Bʀɪᴇɴ

10:34 PM

@Dennis Msybe "familiarity with the language"? Jelly is not well-known outside of PPCG.

Easterly Irk

@CᴏɴᴏʀO'Bʀɪᴇɴ

explaincergos.blogspot.com/2016/03/…

gtg bai

not coming back for a couple hours, will do more when I can.

@CᴏɴᴏʀO'Bʀɪᴇɴ there better be another comic when I get back in ~4 hours.

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@EasterlyIrk :D thanks, that was great

New Main Posts

0

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