The Nineteenth Byte

emanresu A

12:27 AM

Can someone explain codegolf.stackexchange.com/tools/post-feedback/… to me?

What's the difference between votes and 'feedback'?

hyper-neutrino

feedback is when low rep people try to vote

i think

lyxal

What's the point of feedback if you never get to see it

emanresu A

@hyper-neutrino ... why???

hyper-neutrino

wdym why

emanresu A

What's the point of recording new users attempting to vote? A user with <15 rep probably won't try to vote in the first place.

And if they do, it's almost certainly going to be an upvote instead of a downvote

hyper-neutrino

12:41 AM

well i wouldn't say 69% is "almost certainly"

Redwolf Programs

YT with the unbiased polls again

emanresu A

12:58 AM

@hyper-neutrino I forgot about assoc bonus users

OldSandboxPosts

Sandbox posts last active a week ago: Newton Polynomial

lyxal

because I love using donuts to calculate areas under curves

emanresu A

No, Homer Simpson's rule is that integration is painful.

lyxal

d'oh! I knew i got it wrong

emanresu A

Relevant xkcd

hyper-neutrino

1:10 AM

actually relevant xkcd that isn't an overused joke

emanresu A

Ik, look at the edit history

Why do you think it's the right number?

New Posts

0

Q: Is it a prefix normal word?

Prefix normal words arise in the context of binary jumbled pattern matching. A binary word \$w\$ consisting of \$0\$s and \$1\$s is said to be prefix normal * if, among all of its substrings, none contains more \$1\$s than the prefix of \$w\$ of the same length does. In other words, if \$w\$ cont...

lyxal

Because the second derivative just doesn't exist

emanresu A

...

lyxal

it just can't be calculated

it definitely isn't option A

because option A totally isn't the correct answer which I totally didn't put

emanresu A

1:22 AM

I warn you now, trigonometric substitution will destroy your mind

lyxal

not up to that yet

emanresu A

That's why I'm warning you now

DLosc

@emanresuA But if you survive the experience, you will become enlightened. ^_^

Trig substitution is highly counterintuitive at first, and it often doesn't work, but when it does work it's magic.

rak1507

it's not that counterintuitive is it? it's just like regular substitution

DLosc

The counterintuitive part is that you start out integrating an expression that has nothing to do with trig functions.

rak1507

1:34 AM

fair enough

I mean, it depends, a classic trig sub is something like sqrt(4-x^2) which obviously is related to trig functions being the graph of a circle

DLosc

It wasn't obvious to me when I first encountered the concept.

Mainly, I think, because differentiating the same function just requires use of the chain rule + power rule.

So it's easy to look at it as "oh, this is a modified polynomial, it should be easy"

And then the way to integrate it it something wildly different

rak1507

if you didn't know trig sub and you were asked to find the integral of some trig sub questions you'd do it geometrically probably, so while the trig sub method isn't obvious, the connection can be

thejonymyster

2:14 AM

@EphraimRuttenberg i wish itd show a picture of the move

Redwolf Programs

3:14 AM

Ooh, just remembered a very poor design choice I made when making Ash

When an array was cast to a number it'd take the sum, which I think is perfectly sensible. But addition didn't vectorize by default. So adding 2 + [1, 2] would give you 5

hyper-neutrino

yeah that's very cursed

emanresu A

3:49 AM

^

Redwolf Programs

You're so good at reviewing you deleted it with your mind

3

PyGamer0

@RedwolfPrograms i have ideas for some sort of trains to dinoux, idk if they are necessary at all lol

Redwolf Programs

Trains as in tacit-y stuff?

PyGamer0

yes

Redwolf Programs

If you're already using stack-based or prfix/postfix, I'd recommend sticking with those

PyGamer0

3:59 AM

makes no sense right?

@RedwolfPrograms has anyone tried stack-based + tacit?

Redwolf Programs

Probably not, because that wouldn't really make sense

The whole point of tacit is that it doesn't need variables or a stack to hold the arguments

hyper-neutrino

stack based is a subset of tacit lol

but train-y tacit-y stuff like the functional APL/J/K/Jelly system, that doesn't go well with stack-based like redwolf said

Redwolf Programs

Sort of, although I'd consider postfix to be tacut and stack based a way to implement postfix

Although that's a really pointless distinction

hyper-neutrino

that's... fair enough although i don't like associating stack-based with postfix either LOL

Redwolf Programs

I could see the fancier tacit-like structures being used in a stack based language to compose operators in some way, but it'd be really weird

Like you'd have a chain of links, and each link would take its arguments from the stack

But the links themselves would be tacit (using tacit here to mean APL/J/K style tacit, obviously)

PyGamer0

4:05 AM

i will just embed jelly then ˙ᓀ˙

lyxal

4:46 AM

I have an idea of how you'd merge stack and tacit, but I have no idea if it's actually useful/good for saving bytes

Just have a transformer that collects elements until the end of a chain is reached (what delimits the end of a chain is up to you to determine)

(transformer is just what I call postfix operators)

hyper-neutrino

anyfix had a cursed method of keeping a stack of both values and functions so if you did 1 2 + it would push 1 and 2 and then add them, if you did 1 + 2 it would push 1, push the +, and then when it processed 2 it would find + and use the 1 to push 3, and if you did + 1 2 it would push the + and then 1 and then process 2 and add them

not quite tacit-stack combination like you're suggesting but it reminded me of that

emanresu A

5:58 AM

@RedwolfPrograms :P that's what happens if you leave GRT for ann your

Why did everyone star chat.stackexchange.com/transcript/message/59377561#59377561?

PyGamer0

6:58 AM

CMQ: What do you think ⍨ does in dinoux??

pxeger

swap two items

PyGamer0

did you guess?

pxeger

I read that in your docs page a while ago lol

but it makes sense IMO

PyGamer0

i knewitlol

lyxal

@emanresuA because people star anything lol

Heck, they might even star this message that I wrote by hand

" But lyxal...how do you write messages by hand?"

Using modern technology Tm

Admittedly, there's a few flaws

Like not recognising Unicode

But it mostly works (except for the hand cramps ofc)

New Posts

7:14 AM

0

Q: Lottery Ticket Problem

Write a program that will accept 5 positive numbers from the user between [0,9] inclusive for a lottery ticket. Implement error checking to ensure the numbers are between the specified range. If any input is outside of the range immediately exit from the program notifying the user there was an in...

programming-puzzle functional-programming

lyxal

@NewPosts it'd be cool if this was an original question. But alas, it isn't

Very sad

emanresu A

8:04 AM

@lyxal How'd ya find that?

-14

A: Ignore chat pings found in links

Here is a probable solution to your feature-request Instead of completely disabling the stealth-ping feature on chat, the users should have the ability to choose whether or not they want the stealth-ping to affect them or not. This means that all stealth-pings will appear to users (you can see w...

...

Stealth pings are a bug, not a feature. — Dennis Nov 29 '15 at 19:46

Hm, a new random thing has made it onto the search results for 'lyxal'.

lyxal

@emanresuA copy and paste text into search bar ez

emanresu A

Also a square bagel???

Idk even what that is

lyxal

8:28 AM

lol

Neil

9:31 AM

CMC: Richard is raising money for charity. Their current total is $1051, of which he has raised $43. How much more money does he need to raise to reach 5% of the total? Write your answer as a full program or function that takes the values 1051, 43 and .05 as inputs. Please round output up to the next whole dollar.

emanresu A

This sounds like a homework problem

Anush

then we should do it quickly!

there might be a deadline :)

PyGamer0

@Anush óòf

Anush

9:55 AM

:)

PyGamer0

CMC: Given x,y coordinates of 3 points (a,b,c) on a 2d plane (assuming they lie on any quadrant), find a point d such that the distance(a,d)=distance(b,d)=distance(c,d).

emanresu A

So basiically, find the center of the circumscribed circle?

PyGamer0

@emanresuA yes

Anush

10:11 AM

CMQ given two sets of points, one lying on one straight line and another lying on another straight line, can we find the two lines?

pxeger

depends how many points you've got

Anush

10:29 AM

@pxeger let's say 10 in each set

so 20 in total

are you thinking brute force?

pxeger

it is possible to construct a set of points for which that is impossible

in fact, that's impossible for almost all sets of points

Anush

@pxeger impossible in what sense? Clearly you can split the combined set in all possible ways and try to draw two straight lines for each split

that works but is very slow

CMC make sets of 2d points at integer coordinates so that there is a straight line through the points in each set. Each set should have three points and no two straight lines should be parallel.

your code should in theory produce these sets forever

pxeger

10:45 AM

@Anush well you just choose 20 points that aren't on a line

or do we assume they're already on a line

Anush

12:59 PM

@pxeger yes you should assume that

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