The Nineteenth Byte

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00:12

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The ASCII charset (American Standard Code for Information Interchange) is the most widely-used character encoding standard. ASCII codes represent text in computers, telecommunications equipment, and other devices. Challenge Your challenge is to print a mapping of the ASCII character set as the ...

New Main Posts

00:26

;-; nobody likes me

New Sandboxed Posts

02:12

0

A: Sandbox for Proposed Challenges

Reverse divmod code-golf number Introduction The divmod function is one that is included in many standard libraries and is defined as follows: Or, in other words, divmod(a,b) returns a list containing the integer quotient of a/b (i.e. floor(a/b)) and mod(a,b) (i.e. the remainder in the divi...

0

A: Sandbox for Proposed Challenges

Golf a Golf Game Grader code-golf array-manipulation Task Given a list of golf scores, output the ranking of each score in the list. Remember that lower scores are better. The ranking of a score is defined as 1+[the number of scores better than that score]. Example The input list is [25,24,2...

totallyhuman

aaaaaaaa bots

totallyhuman

02:43

shoo

Phoenix

03:30

Anyone for Contact?

Riker

@totallyhuman #botshavefeelingstoo

totallyhuman

03:47

great who gave the bots sentience this time

@Dennis no don't let them tempt you!

Phoenix

@Phoenix s/Contact/Codenames

Helka Homba

in Java how can I do String.compare(s1, s2) instead of s1.compareTo(s2) in case s1 is null?

Phoenix

@HelkaHomba You manually check for null, or write your own function.

Alternatively, use C#

Anonymous

@HelkaHomba You have to manually check for null

Helka Homba

ok :/

Phoenix

03:57

Or use C#'s null-coalescing operator.

Anonymous

So (s1 == null && s2 != null) || s1.compareTo(s2)

Anonymous

@Phoenix "Use language B" is not a good answer for "How do I do X in language A?"

Phoenix

I gave the actual answer. I should be free to state my opinions about languages.

Helka Homba

^

I did like learning that that kind of thing would work fine in C#

Phoenix

In C#, obj?.func returns null if obj is null. Might be .? I confuse the two.

Anonymous

04:13

It doesn't work like that

Anonymous

obj? returns Nullable<T> (where T is obj's type).

Anonymous

You have to resolve the nullable to a value (via obj?.Value or obj?.GetValueOrDefault) before you can access the object's methods

feersum

Can I make a non-null Nullable that's filled with a null?

Anonymous

@feersum null

feersum

Is that your Nullable<bool> answer?

totallyhuman

04:16

Hah

Anonymous

But to answer the question: no. A Nullable has no value if it is filled with null.

feersum

I'm trying it and it won't let me have a nullable with an object at all.

Downgoat

@TuxCopter are you interest in work on VSL because otherwise I'll have to remove you from org

feersum

VS for C# is really good (if you don't know what you're doing).

I answered a C# challenge once, even though I didn't know it, because it told me how to fix all the errors.

@Downgoat Nope...

When I had to debug my llvm, I made a program that inserts a printf after every instruction so where I could see where it crashes.

Downgoat

10/10 probably how VSL will end up

feersum

04:26

github.com/feresum/acml/blob/master/miniml/debugify.py

Downgoat

though from what I can tell that's what the LLVM debugging intrinsics also do basically (you put one after every statement)

Helka Homba

What ever happened to Cheddar?

moldy?

2

Phoenix

@feersum That + ReSharper

feersum

@Downgoat I suppose that's supposed to be for debugging the source language?

(As opposed to debugging your compiler).

Downgoat

@HelkaHomba still aging

@feersum btw have you used LLVM's vtables?

Anonymous

04:29

Unlike cheese, if you want it to be a gouda, you have to a-worka

feersum

@Downgoat No, is there actually a builtin for that?

I would expect that to be the compiler writer's responsibility.

But my language is not OO anyway.

Downgoat

@feersum well there is syntax for it

feersum

You know what would be cooler than vtables, is a generalized dispatch to different overloaded funcitons.

Like I could have f(int), and f(string), and have an object whose type is unknown at compile time, and do f(whatever) and have it call the right one.

And it would generalize to multiple parameters.

Anonymous

So dynamic dispatch?

feersum

Yes, I think it's lame how OO languages make the only way to have virtual dispatch is by gluing all the functions onto the superclass.

Downgoat

04:37

@feersum with VSL I'm thinking of making a struct to function pointers. Seems simple enough

Question: how to get function pointer in LLVM >_<

feersum

@foo

totallyhuman

0x0889967

MD XF

05:03

Wow this is terrible on mobile

There should be a TNB app that makes it slightly less awful

Phoenix

It isn't that awful

Downgoat

@MDXF are you iOS or android?

ASCII-only

@Mego btw foo?.bar isn't the method/property bar of foo?

Anonymous

@ASCII-only Nope. foo? constructs a Nullable, which only has its own properties

Anonymous

Oh wait that second ? is code too

MD XF

05:09

@Downgoat Android, of course. I don't hate my life.

Anonymous

So yeah, foo?.bar is the bar property of the Nullable containing foo

Anonymous

But that doesn't work to access foo.bar

ASCII-only

@Mego docs.microsoft.com/en-us/dotnet/csharp/language-reference/…

Anonymous

Oh huh. That's not what the docs I linked to implied

ASCII-only

@Mego Well yeah, ?. isn't the same as ?

it parses as obj + ?. + foo not obj? + . + foo

Phoenix

05:13

Sometimes I accidentally try Class?.StaticMethod and spend actually hours wondering why it isn't working.

MD XF

@Downgoat LLVM C? Never worked in it but how different is it that GCC?

ASCII-only

@Phoenix O_o

Downgoat

@MDXF LLVM C?

LLVM and C are two different languages?

Phoenix

Because Class?. really is Nullable<Class>.

@ASCII-only Ok, to be completely honest, that isn't true. Until Mego mentioned the Nullable thing, I've been stuck on it for two weeks.

(ty mego)

Downgoat

@TuxCopter queston: is je te laisse manger present tense of future?

MD XF

05:17

@Downgoat huh, I thought there was an LLVM compiler for C, or vice versa.

Downgoat

google translate says future but wouldn't future be je te laisserai manger

ASCII-only

@MDXF Yeah there is but it's still normal C

@Downgoat pls go here

Anonymous

@MDXF LLVM is a programming language and a set of tools used to compile compiler-outputted IR into binaries. You can write a frontend for LLVM for basically any language (with varying degrees of effort). clang is a well-known LLVM frontend for C and C++.

Downgoat

> The name "LLVM" itself is not an acronym; it is the full name of the project

._.

ASCII-only

@Downgoat i thought it was an acronym for low level virtual machine

Downgoat

05:24

> The name LLVM was originally an initialism for Low Level Virtual Machine, but this became increasingly less apt as LLVM became an "umbrella project" that included a variety of other compiler and low-level tool technologies, so the project abandoned the initialism

huh

Mendeleev

05:39

@Mego What does LLVM IR look like?

Anonymous

Not sure. I'm not the one in here who works with it on a daily basis.

ASCII-only

Downgoat/feersum (IIRC) are :P

Phoenix

@Mendeleev LLVM IR is the middle stage used by the Clang compiler, iirc.

Mendeleev

I know

Phoenix

So it probably looks like assembly.

Mendeleev

05:40

Apparently not though

@feersum ?

ASCII-only

@Phoenix Not very much

It's like a weird mix of assembly-ish things and functions

Downgoat

05:56

@Mendeleev perl had a baby with assembly

Mendeleev

@Downgoat So it's very simple. but powerful?

feersum

@Mendeleev wat

Mendeleev

@feersum Apparently you know a lot about LLVM IR

Downgoat

@Mendeleev pretty much. It has a few primitive commands but handles most of optimization/actual compilation for you (so 1 LLVM IR can be compiled to like 99% of platforms and arches)

Erik the Outgolfer

perl ever goes in the same sentence simple is?

Phoenix

05:58

In the same way Brainfuck is simple because it only has 8 commands
But powerful because it's TC
?

Downgoat

It also does have more complex features like GC, and Vtables

@Phoenix Yeah. Though LLVM has a lot of commands just that most of them you rarely use.

feersum

Well my compiler makes output that looks like this.

define %free_type_1042 @lambda111(%voidptr %cl0, %func4 %r112)
{
	%r140 = extractvalue %func4 %r112, 1
	%r141 = icmp eq %voidptr %r140, null
	br i1 %r141, label %lbl142, label %lbl143
	lbl143:
	%r144 = bitcast %voidptr %r140 to %size_t*
	%r145 = getelementptr %size_t* %r144, %size_t -1
	%r146 = load %size_t* %r145
	%r147 = add nuw %size_t 1, %r146
	store %size_t %r147, %size_t* %r145

Huh, code formatting won't activate.

Phoenix

Ctrl+k

feersum

Ctrl+k wasn't working but the button did.

Erik the Outgolfer

you use a mac? if so it might be cmd+k

Kritixi Lithos

06:01

It's still Ctrl+k on mac

feersum

Is cmd the same as propeller?

ASCII-only

@feersum Yes

Phoenix

I disapprove of mac. Windows or Linux, sure, but I have an irrational dislike of OSX.

feersum

I am baffled by the purpose of it.

Phoenix

Babby's first Unix

Downgoat

06:08

@ATaco can you add /borkalert to userscript which outputs "BORK ALERT 🚨 BORK ALERT 🚨 BORK ALERT"

Phoenix

You can make the pr

It's not hard

Erik the Outgolfer

@Phoenix me too

Phoenix

Ok Maybe it's not irrational

It's overpriced, doesn't come with the freedom of Linux or the Game-running capability of Windows.

Downgoat

@Phoenix ok done

Kritixi Lithos

@Phoenix define "freedom" (genuine question)

Phoenix

06:13

I'm not sure

To be completely honest

Downgoat

@ATaco btw I left an important PR on the userscript repo

Anonymous

@KritixiLithos Not bogged down by copyright licenses and closed-source software

Kritixi Lithos

Carrot should be able to complete the dynamic box challenge in 10 bytes, but it can't because my rewrite of the interpreter isn't finished yet and the older interpreter is broken D:

Mendeleev

Please rate the UX of the new version of m y inventory system

Anonymous

@Mendeleev No

Mendeleev

06:26

inventory.dk0.us

@Mego Why :(

Kritixi Lithos

@KritixiLithos actually Carrot would take more bytes because it is weird []^*2 results in [][][] and not [][]

Downgoat

@Mendeleev UI is nice though UX in term of the "hover" thing w/ login will not play nice with accessibility tools and also can be kind of confusing as people usually click and hover at the same time always presenting a dialog which interrupts the user's flow also with stagnates discovery (in terms of why they did taht interaction).

Mendeleev

@Downgoat Right...

What's the best way to get users to log in with Google?

I'm trying to make this as dead simple as possible. People go to the tech lab, pick up an item, check it out.

Basically this is made for high school students and teachers to use

Downgoat

let them enter the text field and when they submit, redirect them for login, once they login then complete the request

Mendeleev

@Downgoat I don't have much need for accessibility tools since our school does not have anyone who needs them (yet)

@Downgoat The problem with that is impulsive, forgetful high school students who will just put it in, click check out, then exit, without actually checking out.

I'm making it as foolproof as possible.

Downgoat

06:36

are you sure? usually people will want some confirmation that their request is actually complete before completeting

Mendeleev

I know someone who went to the library, went to the self check out, at the library card prompt they scanned their book and walked away

Downgoat

._.

Mendeleev

Exactly.

Downgoat

landing screen should then be login prompt itself

Mendeleev

That puts pressure to login on the users

I want the purpose to be clearly visible

I had that set up before, but I found it infuriating

Most people did as well

Downgoat

06:40

okay then you can replace "checkout" button with "continue" or "login to conitnue maybe"

Phoenix

@Mendeleev My library solves this by very loudly playing the word "error" out of a speaker if your card isn't the first thing scanned.

Source: Have repeatedly tried to do exactly that.

Mendeleev

@Phoenix What library system? KCLS doesn't do that AFAIK

Phoenix

Wait, no, it doesn't say anything, it just makes an obnoxious error beep.

It's kinda clear something went wrong though.

Mendeleev

Why are the French words for "wood" and "drinking" so similar, I keep getting confused O_o

@Phoenix Some people can be very oblivious

Downgoat

@Mendeleev :| if I say "Est-ce que tu veux mon bois" does that mean do you want my wood or my drink :|||||||

Mendeleev

06:45

@Downgoat The button label is the only indication of "checking out" that I have on the page, and it's pretty obvious. If I make it "continue", then that will be ambiguous towards what I want to do, whether I want to check in or out, etc.

> Do you want my wood

No context quote of the day

Downgoat

@Mendeleev you can still have a header

that said, check in & checkout should be CTA (call to actions)

Mendeleev

@Downgoat Please define

Downgoat

i.e. be the accent color and stand out

Mendeleev

@Downgoat They turn the accent colors if you log in and click on them. The buttons are also highlighted, which should help bring attention

@Downgoat BTW, the side nav should work now. Try making your browser narrow.

Mendeleev

07:11

@TuxCopter What does "aucun" mean?

betseg

07:29

Should've done this with TrumpScript instead of C and get all the reps but it's too late now :(

Jan Dvorak

08:15

There's a trumpScript now? *Runs away in terror.*

Anonymous

@JanDvorak I'm pretty sure it has existed for years, based off of The Apprentice, rather than POTUS

New Sandboxed Posts

09:12

0

A: Sandbox for Proposed Challenges

Divmod two polynomials code-golf math Challenge Given two polynomials, a and b, return both values of floor(a/b) and a mod b. Formatting The polynomial will given like so: 5x^4 + x^3 + -6x + 5 Each term of the polynomial will be given in the format ax^n. If a = 1 then the term should be x...

Kritixi Lithos

09:52

How does this even happen tio.run/…?

If I remove the pipe, the value of a is retained, but with a pipe, the value of a is lost for some reason

(it's bash, btw)

Anonymous

21

Q: bash: variable loses value at end of while read loop

I have a problem in one of my shell scripts. Asked a few colleagues, but they all just shake their heads (after some scratching), so I've come here for an answer. According to my understanding the following shell script should print "Count is 5" as the last line. Except it doesn't. It prints "Co...

bash scope

Kritixi Lithos

thanks

Anonymous

Welcome

Beta Decay

10:12

Wow, is VBA always this long?

1

A: Decode the chmod

Visual Basic, 606 Bytes imports System.Collections module h sub main() Dim i As String=console.readline() Dim s=new Stack(new String(){"Others: ","Group: ","User: "}) for each j as Char in i dim t=new Stack() if((asc(j) MOD 2)=1)then t.push("Execute") if(asc(j)=50 or asc(j)=51 or asc(j)=54 or...

Okx

Well, VBA is bad in every way so of course ¯_(ツ)_/¯

Beta Decay

:D

Okx

oh wait he's a new user let's not be rude

Beta Decay

I'm being rude to VBA not the user xD Looks like it's pretty well golfed

Okx

Is VBA the new Java?

Beta Decay

10:19

Probably :D

Arjun

10:46

OMG! I swiped through all of this!

Kritixi Lithos

do you mean you swiped through all of that particular comic or through the whole xkcd collection?

nvm, I see what you mean

Beta Decay

@Arjun All of it?

How much time do you have?!

Okx

well i just did it just now

TuxCopter

11:04

> The click-and-drag portion of this comic is divided up into 2592 sections of 2048x2048 pixels.

o_O

Erik the Outgolfer

where does it say that?

TuxCopter

It's on the explainxkcd page

Erik the Outgolfer

11:20

@Okx continuing the comment discussion here, a more proper expression could be "must use"...

Okx

If we do __ on 2, then we get 1, which is truthy from according to i

Erik the Outgolfer

but 2 isn't

Okx

I don't quite understand what you mean

Yes, but if we do __ where the top of the stack is 2 (which is considered falsy by i), we get 1 (which is considered truthy by i)

Erik the Outgolfer

so we mustn't use __ to check truthiness

Okx

But it works.

Erik the Outgolfer

11:22

2__ -> 1

2i1ë0 -> 0

Okx

__ maps 2 -> 1, 1 -> 1, 0 -> 1

It works for the situation

Erik the Outgolfer

costs bytes

Okx

Yes, it doesn't check truthiness

Erik the Outgolfer

and what I meant is that might've been how Riley assumed 2 is truthy

Okx

Right.

Erik the Outgolfer

11:24

btw 05AB1E truthiness is totally weird

Okx

Can't do much about that.

Erik the Outgolfer

only 1 seems to be truthy

and _ has different truthiness than i

Okx

How i behaves is the definition of truthy, as far as I'm concerned

_ just does something else

Erik the Outgolfer

_ is Python falsiness I think

i is 05AB1E truthiness, ië is 05AB1E falsiness, and you can do both in a single statement, do something if truthy (i.e. 1) after the i, else do something else after the ë

and __ is Python truthiness

Okx

Good to know.

Erik the Outgolfer

11:33

didn't you already know?

yeah it's kinda confusing

I just wonder why there isn't a push positive bool builtin

and we must use __

or even a variant of negative and positive bool that does i0ë1} and i1ë0} respectively

wait a sec...ooh I think _ vectorizes too

really a boolean mess!

Okx

Ā is the same as __

Erik the Outgolfer

dah I need updates!

push truthified a

macron is used? O_o

so, still we must use i1ë0} not Ā

Okx

What would the point of i1ë0} be, exactly? It'd only convert values that are not 1 to 0 (1 -> 1, everything else -> 0) , and we're allowed to output 3 instead of 0 as they are both falsy

Also, it might be best to move to the actual 05AB1E chatroom

LegionMammal978

lol, just remembered this

TuxCopter

12:18

@Mendeleev It means "none"

@Downgoat Yeah you can remove me from the org, I don't think I'll work on it anymore

Erik the Outgolfer

flaaaaag!

TuxCopter

What is that even supposed to mean

Erik the Outgolfer

that it should be red-flagged

I wonder why did it stay over 30 minutes without being deleted

TuxCopter

I mean what is that answer even supposed to mean, and why do people think posting that kind of spam on a site about code golf a good idea

Erik the Outgolfer

new user, but dunno if really wants to contribute at all

please don't vote to delete!

Kritixi Lithos

12:34

why?

Erik the Outgolfer

because then it can't be spam-nuked

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Cut a Ham Sandwich in Half codegolf geometry In this challenge we consider a discrete version of the ham sandwich theorem. In our case the theorem says: Given two sets of points in a plane, there is a line that simulaneously bisects both sets. So given two disjoint sets of distinct integ...

Lembik

hi all

@orlp OK I have a problem somewhere in between impossible and easy now :)

TuxCopter

12:53

Why is that possible

21

Q: How did "tech-supportcenter" phishers trick Google?

Related: Is the Web browser status bar always trustable? How can Google search change the location in a URL tooltip? I've always thought you can "hover" over a link to see where it really goes, until today. A coworker (working from home) searched for "Target" in Google Search (using edge). He ...

web-browser google url-redirection

Leaky Nun

@RohanJhunjhunwala why does "d=c&2" and "d=c \n d&2" give different results?

Kritixi Lithos

@TuxCopter so is there no way to see the real URL?

TuxCopter

@KritixiLithos You can by seeing what onmousedown contains

New Main Posts

13:09

6

Q: How high can you count?

Challenge: Your task is to write as many programs / functions / snippets as you can, where each one outputs / prints / returns an integer. The first program must output the integer 1, the second one 2 and so on. You can not reuse any characters between the programs. So, if the first program is ...

code-golf number restricted-source

Rohan Jhunjhunwala

@LeakyNun unfotunately, I have not added bitwise operators yet in my evaluation function, (it is unfortunately independent of the way the rest of the language is implemented).

Erik the Outgolfer

13:36

"answered by Wheat Wizard" links to ETH's answer...wat?

Jan Dvorak

maybe it's pointing out a case of plagiarism?

Erik the Outgolfer

huh? (also the link doesn't work anymore)

Riker

13:51

@flawr imgur.com/gallery/sorOc

5

flawr

@Riker haha XD

Riker

yes

Okx

gotta love em downvotes for valid answers puu.sh/w9CHI/627b2aa1e4.png

Jan Dvorak

There are various reasons to dislike valid answers

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