The Nineteenth Byte

Stefnotch

16:06

Is this a catalog question: http://codegolf.stackexchange.com/questions/85/fibonacci-function-or-sequence
If not, is there a Fibonacci catalog question?

anOKsquirrel

hai

Stefnotch

Hi, Squirrel!

Throws a nut somewhere

anOKsquirrel

eats nut

Optimizer

had poison

Stefnotch

Here is another nut: cliparts.co/cliparts/8cA/6r6/8cA6r6Mni.jpg

(Recognize it? :P)

Nathan Merrill

16:13

forgot antidote

anOKsquirrel

@Optimizer dies

Optimizer

I didn't die!

(I think this is the perfect opportunity to use stealth ping as that would be the most fitting)

anOKsquirrel

is still dead

Optimizer

I'll use revive if you convert that to stealth ping :P

anOKsquirrel

k

‏‏‏‏ still dead

Optimizer

16:24

uses anti-revive to block the affect of any future revive

anOKsquirrel

but but but

TimmyD

@Optimizer If he's dead, how's he to edit his post?

anOKsquirrel

oh no I accidentally pinged doorknob D:

not you

Optimizer

@TimmyD the same way he is cribbing about being dead. He sure is talkative for a dead squirrel

@anOKsquirrel I meant change the "@Optimizer dies" line to stealth ping so that it reads "dies" only

anOKsquirrel

@Optimizer oh.

uses anti-anti-revive to block the affect of anti-revive and every future anti-revive

gets sock to revive

Ha! I'm back!

Optimizer

16:28

and now get ready for a chat ban for using stealth ping on mod

anOKsquirrel

plays dead

Optimizer

buries the dead squirrel near the tree

sweerpotato

sup

anOKsquirrel

shhh, i'm pretending to be dead

sweerpotato

Now I'm scared

anOKsquirrel

16:31

I accidentally stealth pinged doorknob

sweerpotato

I wonder if
import sys
print(sys.version[0])
is allowed considering different python versions in http://codegolf.stackexchange.com/questions/65641/the-versatile-integer-printer

Would output 1, 2 and 3

@StewieGriffin

Yeah, must be allowed

:X

A bit cheap

Anonymous

17:09

@anOKsquirrel No such thing

Anonymous

Stealth pings got fixed yesterday

Anonymous

(or was it day before yesterday? idr)

sweerpotato

What's a stealth ping?

You ping and turn off your computer?

Anonymous

A long-gone method of annoyance

Stefnotch

Really, they got fixed! OWO

Anonymous

17:10

It's been 14 hours since the last starred message :o

4

Stefnotch

butThisIsStillALink

Anonymous

@Stefnotch As it should be

Anonymous

I don't know what I expected

sweerpotato

@Optimizer sounds more like EXTREME ping

Stefnotch

(Looks like we have to find a new way?)

Optimizer

17:11

what got fixed?

Anonymous

@Stefnotch Or we could just not have stealth pings, and everything will be nice

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Arithmetic Progressions code-golfmathsequence Your task is to analyse the input and output the formula for the n-th term if it is an arithmetic sequence, otherwise it should print "NAAP". Input Input (from STDIN) will consist of few numbers, between 4 to 10 numbers where each number will be...

Stefnotch

XD

Do those:
How to Format

► put returns between paragraphs

► for linebreak add 2 spaces at end

► _italic_ or **bold**

► indent code by 4 spaces

► backtick escapes `like _so_`

► quote by placing > at start of line

► to make links

<http://foo.com>
[foo](http://foo.com)
<a href="http://foo.com">foo</a>

things work in the chat?

italic

bold

backticks

> quote

sweerpotato

I don't think formatting works in the chat

I'm pretty sure

Stefnotch

So, pretty much everything except HTML...

sweerpotato

17:14

[zombo](www.zombo.com)

rip

Stefnotch

  code test

Cool!

Anonymous

Chat uses mini-Markdown

sweerpotato

We should get MathJax or something here

Anonymous

@ChrisJester-Young is all-knowing and can tell you more

Stefnotch

Oh! @ChrisJester-Young Mind telling me more?

Anonymous

17:15

2

sweerpotato

:D

Anonymous

chrome.google.com/webstore/detail/se-chat-mathjax/…

Stefnotch

url test <http://www.googleFake.com>

Anonymous

I think there's also a FF plugin

Anonymous

But I don't use FF so shrug

Stefnotch

17:16

Header 1
=====

- Not working
- list

sweerpotato

Why is my Python answer getting more upvotes than my Subskin, Brainfuck and Fob answer?! D:

I worked so hard on that :<

Anonymous

Because 1) it's shorter 2) it's the most recent answer

sweerpotato

ah

Megabrain

Martin's answer is sick

Anonymous

Yeah it is

Anonymous

Dude is insane

sweerpotato

17:20

I like how you managed to get Befunge into your answer @Mego

I should learn some Befunge

or some other fun Esolang

Anonymous

I borrowed a trick I saw in another Fish/Befunge polyglot - using `\` to separate the IPs

Anonymous

Since it's a mirror in ><> and a swap in Befunge

sweerpotato

I like tricks

ah!

Like the fast inverse square root

Anonymous

So it's v in ><> and a NOP in Befunge

Anonymous

Which lets me send the IPs where I want them

Dennis

17:23

Try it online! currently has 15 languages.

</selfpromotion>

Anonymous

And mixing Seriously into any polyglot answer is pretty easy due to the lack of syntax errors

sweerpotato

Nice @Dennis!

I tried Brain & Chuck once

Anonymous

You just wrap the Seriously code as é<code><0x7f> and you're golden

VisualMelon

Still waiting for a Seriously answer to codegolf.stackexchange.com/questions/65519/…

Sock

Me days of stealth-pinging are over ;( :( X( D:

sweerpotato

17:25

@VisualMelon that one was too hard for me :<

Came up with a grotesque solution

in C++ though, not Seriously

VisualMelon

it was suggested that it should be easy, and I'm interested to see how it works (if it's not just o=1,e=0,eval(input)%2<1?'o':'e')

(or however that would be expressed in Seriously, I've never bothered to learn any golfing languages)

sweerpotato

I tried that approach, it's not that simple I think

I mostly golf in C++

Since it's fun and I know the language

I gave up on golfing languages when I figured I couldn't even write a simple loop in CJam

#toomuchformybrain

Sock

@sweerpotato Me too!

Anonymous

0

A: Well that's odd... no wait, that's even!

Seriously, 25 bytes ,R'2'er(Æ'1'o(Æ£ƒ'e'o2(%I More efficient stack manipulation could probably make this shorter, but meh, I'm happy with it. Takes input as a string, like "+*oee" Try it online (input must be manually entered)

Anonymous

Ask and ye shall receive

VisualMelon

17:30

hurrah!

Sock

@Mego I want a million quacking cows

sweerpotato

Really? @Mego

You whipped that up instantaneously

Sock

Oct 26 at 18:03, by Kritixi Lithos

Anonymous

@sweerpotato Writing code in a language I designed is unsurprisingly easy :P

sweerpotato

Still have to come up with an algorithm!

I can't write crap in my language

Anonymous

17:33

The fact that + and * are the only ops means that simply reversing the string will get it into RPN. Two simple replacements, and it can be directly eval'd.

sweerpotato

Maybe I was overthinking my solution

Thought of making a tree calculator

Anonymous

3rd place to CJam and Pyth isn't bad

sweerpotato

Martin added another language..

Anonymous

The dude's insane, are you really surprised?

sweerpotato

I'm very impressed

Martin is the Dumbledore of code

Anonymous

17:38

He manipulates others and makes their lives hell for his own ends?

sweerpotato

err

The Gandalf?

Anonymous

17:48

Not much difference

sweerpotato

What about Sauron

err

Chris Jester-Young

@Mego MarkdownMini, yes. It's the same code as that which formats comments (with a few chat-specific tweaks like ~~strikeout~~).

Anonymous

@ChrisJester-Young That's what I thought, thanks for clarifying :)

Chris Jester-Young

:-D

Anonymous

@sweerpotato martin-is-sauron

6

sweerpotato

17:50

:D

My friend, who is a C programmer, works in a project where they have defined true as 0

Anonymous

whyyyy

sweerpotato

I have no idea

#define while if

Anonymous

flags as offensive, blasphemous, and just plain wrong

sweerpotato

It's sick

In a bad way

Makes you cry in a corner at night

New Main Posts

0

Q: Parse a two-dimensional syntax

Background Alice and Bob are creating a golfing language to win every single PPCG challenge. Alice wants to make a two-dimensional language, like ><>, but Bob prefers a prefix-infix syntax like in J. As a compromise, they decide to create a two-dimensional prefix-infix language. The parser is a ...

sweerpotato

18:02

Sup @Linus

Dennis

@Mego Because the return value 0 is usually considered success. success would be a better choice though.

Linus

@sweerpotato Just checking up on things.

sweerpotato

Sorry for editing your bot post yesterday

Nathan Merrill

@Sparr I've written up the core part of the CodeBots 4 challenge

0

A: Sandbox for Proposed Challenges

Code Bots 4 sheesh, is this really the 4th? For all you oldcomers, the core challenge is the same, but we are using Java instead of a custom language The goal of CodeBots is to make your bot as viral as possible. Each bot carries a Flag, and you need to make sure that your Flag is everywhere....

does it make more sense now?

Linus

@sweerpotato, it's alright. I will get over it.

sweerpotato

18:05

Mental scars forever

:(

Anonymous

@Dennis EXIT_SUCCESS is the best choice

Anonymous

Remember: if you're about to define a macro in C, either a better one already exists, or you should rethink your design choices

sweerpotato

Macros are the devil

I dunno why they kept them in C++

Anonymous

Backwards compatibility

Anonymous

For the most part, C++ is a superset of C

New Sandboxed Posts

18:08

0

A: Sandbox for Proposed Challenges

Code Bots 4 sheesh, is this really the 4th? For all you oldcomers, the core challenge is the same, but we are using Java instead of a custom language The goal of CodeBots is to make your bot as viral as possible. Each bot carries a Flag, and you need to make sure that your Flag is everywhere....

sweerpotato

@Mego dunno.. iirc Bjarne even stresses that C++ is not a superset of C

Not sure

But I get the idea.. sort of

Macros serve no purpose in C++

other than backwards compatibility I guess

Nathan Merrill

if you are going to break backwards compatibility at all (such as C to C++), it makes no sense to keep around the old ugly ways (such as macros)

Anonymous

@sweerpotato He can stress it all he wants, but at the end of the day, bjarne-is-wrong

sweerpotato

:D

Anonymous

Valid C code is valid C++ code

sweerpotato

18:13

int typename = 1; is valid C but not C++

9

Q: What prevents C++ from being a strict superset of C?

Possible Duplicate: “C subset of C++” -> Where not ? examples ? I'm aware that C++ is not a strict superset of C. What language features prevent C++ from being a superset of C?

c++ c

Anonymous

Okay, except for a few corner cases involving keywords

sweerpotato

:D

Stefnotch

@NathanMerrill I think your bot challenge is pretty cool! What is the "flag" that you are talking about?

Nathan Merrill

@Stefnotch how I determine the winner

which ever submission has the most flags wins the competition

Stefnotch

But what is it? Example?

Nathan Merrill

18:14

a string

whatever you want it to be

as long as it is unique

Stefnotch

So,
function sendMessage(){
string = "mahOwnReallyUniqueString";
}

(Ok, this might not be Java, but whatever..Java, Javascript, who cares about the tiny difference.)

Nathan Merrill

function getFlag(){
    return "AwesomeBot";
}

Linus

@Mego what about macros is bad design? Would be bad in a library but otherwise I don't see it.

sweerpotato

@Linus if you don't know exactly what you're doing, macros can turn out really bad

also we have functions in C++

Nathan Merrill

@Linus the same reason I hate doing find/replace in code

sweerpotato

18:18

Miss a pair of parentheses and it's rip in programming

Stefnotch

@NathanMerrill Oh, that's what you mean! (Mind updating your question to make this clearer?)

Nathan Merrill

I'm not sure what's unclear?

sweerpotato

@Linus ideone.com/Ez9vTM

Nathan Merrill

is step 8 unclear?

also, completely different topic

does stack exchange check for serial comment upvoting?

Stefnotch

Yep, step 8..

Nathan Merrill

18:23

so, if I upvote every comment on a post

sweerpotato

Serial comment upvoting?

Nathan Merrill

I go to a popuar post, and upvote every comment on that post

does SE detect and reverse such voting?

sweerpotato

I don't think so

I like handing out upvotes

Linus

@sweerpotato okay I can see how that might be an issue. Obviously I'm smart enough to know that marcos are replaced before the compiler assesses order though.

sweerpotato

Oh, I don't doubt you!

The problem is less experienced programmers

:<

Nathan Merrill

18:27

not just less experienced programmers, but often times these things need communication, and even that fails with highly experienced programmers

sweerpotato

You really need to be careful

You as in the general public of programmers, not you specifically

:~)!

Linus

@NathanMerrill I can see that being an issue as well. Thanks.

sweerpotato

I find macros obsolete in C++, and very much so

They have no place in my language >:(

Stefnotch

(I can't wait to learn C++ and to try out the macros...)

sweerpotato

.. :D

Nathan Merrill

18:29

do C compilers try to identify similar code blocks and make them subroutines?

sweerpotato

unsure @NathanMerrill

Optimizer

2015: the year where it's normal to ask someone if they are the avocado

Tweeted by __apf__ on December 3, 2015 at 6:27 PM

sweerpotato

I haven't dabbled in compilers

Nathan Merrill

well, your typical compiler won't

sweerpotato

I had a site which shows you the expanded assembly code

err

Let me see if I can find it

assembly.ynh.io

Wish it was Friday

I don't want to work tomorrow :<

Nathan Merrill

18:33

bah, the compiler there is doing optimizing and precalculating the result

sweerpotato

Isn't that.. a good thing?

Linus

@Nathan yes, code optimization is sneeky

Nathan Merrill

yes it's a good thing

but it makes testing if compilers identify similar code really hard

effectively, I want to know if #define y(a, b) (a) * (b) produces code of a similar length to int mult(a, b){return a*b;}

Anonymous

@NathanMerrill No, it's much shorter, but you need more parentheses

Nathan Merrill

what is much shorter?

the function should be shorter

Anonymous

18:36

The macro

Nathan Merrill

I'm talking assembly shortness

Anonymous

So am I

Nathan Merrill

but if I'm injecting code in lots of places, wouldn't the code in a single spot be shorter?

New Main Posts

0

Q: Arithmetic Progressions

Your task is to analyse the input and output the formula for the n-th term if it is an arithmetic sequence, otherwise it should print "NAAP". Input Input (from STDIN) will consist of few numbers, between 4 to 10 numbers where each number will be in the range between -1000 and 1000 inclusive, ...

code-golf math arithmetic sequence

Anonymous

With macro:

Anonymous

18:38

	.file	"assemtest.c"
	.def	___main;	.scl	2;	.type	32;	.endef
	.text
	.globl	_main
	.def	_main;	.scl	2;	.type	32;	.endef
_main:
LFB0:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp
	.cfi_def_cfa_register 5
	andl	$-16, %esp
	subl	$16, %esp
	call	___main
	movl	$4, 12(%esp)
	movl	$0, %eax
	leave
	.cfi_restore 5
	.cfi_def_cfa 4, 4
	ret
	.cfi_endproc
LFE0:
	.ident	"GCC: (GNU) 4.9.3"

Anonymous

With function:

Anonymous

	.file	"assemtest.c"
	.text
	.globl	_mul
	.def	_mul;	.scl	2;	.type	32;	.endef
_mul:
LFB0:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp
	.cfi_def_cfa_register 5
	movl	8(%ebp), %eax
	imull	12(%ebp), %eax
	popl	%ebp
	.cfi_restore 5
	.cfi_def_cfa 4, 4
	ret
	.cfi_endproc
LFE0:
	.def	___main;	.scl	2;	.type	32;	.endef
	.globl	_main
	.def	_main;	.scl	2;	.type	32;	.endef
_main:
LFB1:
	.cfi_startproc
	pushl	%ebp
	.cfi_def_cfa_offset 8
	.cfi_offset 5, -8
	movl	%esp, %ebp

Anonymous

The function creates an additional function in assembly, with all the call/ret overhead

Nathan Merrill

right, but that's for a simple function used only once

Anonymous

The macro version is identical to int main(){int c=2*2;return 0;}

Nathan Merrill

18:40

I really hope nobody is actually writing the multiply macro

Anonymous

Macros are expanded by the preprocessor before the compiler even starts thinking about generating assembly

Nathan Merrill

right, but I imagine that most macros actually being written expand to a larger amount of code, meaning that it will overcome the call/ret overhead, and over multiple uses will produce shorted asm code

Anonymous

Maybe, probably not

Anonymous

It depends on the specific case I would think, but generally, macros lead to smaller assembly

Anonymous

That's of course assuming -Os isn't on; if it is, all bets are off

Optimizer

18:52

If you're in or near #Toronto there's a #Pebble #Hackathon on Friday night http://www.meetup.com/PebbleTO/events/226590468/

Tweeted by PebbleDev on December 3, 2015 at 6:46 PM

someone here pebble'd na?

sweerpotato

narr

I live in Sweden

Linus

If the macro is used at least twice and is very large I would think @Nathan is right. Not versed in the practical details of putting functions to assembly, but overhead for the stack should be finite in comparison to arbitrarily large subroutines.

sweerpotato

too long a trip :<

Optimizer

someone other than you too

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