The Nineteenth Byte

muddyfish

3:00 PM

def __init__(self, arg_1, arg_2):?

Downgoat

Ah ok thx

zyabin101

@NathanMerrill But it doesn't work, because the Google Web Search API no longer exists D:

Nathan Merrill

@zyabin101 I know :/

I was actually thinking the other day that I'm totally going to do self for member functions as well.

muddyfish

@Downgoat self is automatically filled even if it's not actually self which can make some confusing bugs if you forget to put it in

Nathan Merrill

I think I'm definitely going to do self in Elegance. It allows me to assert certain Traits on self (like the function queue.pop() only will work on nonempty queues)

fun pop(self: Queue<T>[NonEmpty]): T

Downgoat

3:04 PM

How to have static properties in Python class?

Nathan Merrill

define it outside the class :)

or @staticmethod

Downgoat

And how to overload equality?

muddyfish

@Downgoat python doesn't have static stuff

@Downgoat def __eq__(self, other):

@muddyfish I guess you have properties

my god I actually pinged myself

Downgoat

Does Python have a notion of extends

muddyfish

@Downgoat you mean inheritance?

Downgoat

3:09 PM

Yes

Maltysen

@Downgoat class A(B):

muddyfish

@Downgoat class Pear(Fruit):

Downgoat

K thx

Maltysen

@Downgoat infact, you should always extend from object liike class A(object)

muddyfish

^

Nathan Merrill

3:10 PM

@Maltysen only in python 2, right?

Downgoat

@Maltysen wat

python oop is weird

muddyfish

@NathanMerrill If you want it py2 and 3 compatible yes

Nathan Merrill

right :)

Maltysen

@NathanMerrill oh youre' right

@Downgoat its really not. the object thing is for backwards comaptability in python2 between old-style and new-style classes

muddyfish

The only thing using py3 consistently is the fact they turned print into a function and I have to use brackets round it all the time

Maltysen

3:12 PM

@muddyfish also map, etc. are generators and not lists

feersum

lol, I write python so often and don't even know what old/new style classes are

muddyfish

@Maltysen It basically lets you use super properly

feersum

I hardly ever make classes :)

muddyfish

@feersum In py2, if it doesn't extend object you can't use super in a pretty way

feersum

What does super do?

Maltysen

3:13 PM

@feersum old-stlye classes were stupid

muddyfish

@feersum It basically lets you overload methods and still have access to the old ones

Martin Ender

@feersum It gives your code the ability to fly and regenerate from wounds at an unnatural rate.

TùxCräftîñg

why in python2 classes can't simply extends object by default?

muddyfish

32075264: It also lets you write code in such a way it doesn't need to know what class it is

DJMcMayhem

@muddyfish there's some other big changes. Like float division and range == xrange

Nathan Merrill

3:14 PM

@El'endiaStarman I tested it on my app: If you split a territory, and one side only has 1 square, even a tower dies

Maltysen

@TùxCräftîñg because backwards compatability. what you say is what happens in python3

muddyfish

@DJMcMayhem I did mention it was the main reason for it to stop me swapping

DJMcMayhem

And input == raw_input

Downgoat

How to check if a dictionary with keys which are objects with an eq property contains the same object according to eq

muddyfish

@Downgoat can you rephrase that?

Maltysen

3:15 PM

@Downgoat no don't override eq, override contains on the dict

DJMcMayhem

Wait a minute, is @Downgoat writing in snek?

TùxCräftîñg

@NathanMerrill no it's bad because it look like MS-DOS

Downgoat

E.g I have dictionary with keys which are a Vector class I want to check of the same vector class is there

@DJMcMayhem yes ;_;

@Maltysen example?

Nathan Merrill

@Downgoat oh, do you need a hug?

3

DJMcMayhem

@Downgoat :O I never thought I'd see this day come

\o/

Downgoat

3:16 PM

...

Maltysen

@Downgoat if you're using in, it checks with the is operator, which cannot be ovverriden

Downgoat

Ono

Maltysen

so, you have to ovverride the in operator, but that requires changing the dict, not the vector

muddyfish

@Maltysen It can but it's kind of really ugly

Downgoat

then what must gaot do

Maltysen

3:17 PM

but you can still override eq

DJMcMayhem

I'm using boost python right now.

Maltysen

and then make your new dict use eq instead of is

Nathan Merrill

wait..

there's a reason __hash__ exists

TùxCräftîñg

who was user43512?

Nathan Merrill

if you just want a standard dictionary, then just override __hash__ and __eq__

muddyfish

3:18 PM

@NathanMerrill __hash__ is basically id(obj)

Maltysen

@NathanMerrill oh shit you're right I was thinking about lists

@Downgoat ignore everything I said, listen to @NathanMerrill he's smart

Downgoat

@NathanMerrill uh

scew gaot will just eat snek

Sp3000

@muddyfish Not quite - id is just a unique identifier (memory address in CPython) but __hash__ is the value to use in, e.g., sets and dict (e.g. id(1) in Python 3.5 might give something like 139969564926528, but hash(1) or (1).__hash__() gives 1)

muddyfish

@Sp3000 I know it's different for some types like int and str

Downgoat

Wait Python uses hashes to check for equality???

Nathan Merrill

3:21 PM

if you're making your own classes whose equivalence is defined by its members equivalence, then override eq and hash

muddyfish

1..__add__(2) is valid syntax

Maltysen

@Downgoat no, dicts and sets do

Nathan Merrill

@Downgoat no. If you do a == b, it uses __eq__

TùxCräftîñg

@Downgoat because python... ?

Downgoat

@Maltysen still bad

Nathan Merrill

3:21 PM

but dictionaries and sets need __hash__

Maltysen

@Downgoat ...no? that's kinda of the entire point of dicts and sets (hash-tables)

Nathan Merrill

@Downgoat this is how dictionaries have to work

you need to generate a hash for a particular object

Maltysen

@Downgoat wait, you're using your Vector object as a key?

Nathan Merrill

otherwise insertion is O(n), and you've got a list

feersum

This is why it's great to just use tuples everywhere instead of making objects ;)

Maltysen

3:24 PM

@feersum rofl

have you seen namedtuple? I think you'd like it

Sp3000

from collections import namedtuple

... nevermind :P

feersum

If you want your program to actually be efficient, then you can't use Python anyway.

Nathan Merrill

yeah, if all you want is to store some data, tuples are the way to go

feersum

So screw things like writing hash functions in Python.

TùxCräftîñg

0

A: Shortest infinite loop producing no output

Ru, 4 bytes ¿Ϟ{} ¿ call a function while koppa is not 0/nil/false. But since Ϟ also return it's argument, it's possible chain ¿ and Ϟ.

Nathan Merrill

3:25 PM

its the functions that define a class

Maltysen

@Downgoat actually, if you don't have any functions, plz look at namedtuple, it might be exactly what you need

docs.python.org/2/library/…

feersum

Doesn't really matter whether you write thing.f(a,b) or f(thing, a, b).

Maltysen

@feersum go C and structs!

Nathan Merrill

@feersum except scoping. I may call a function on an object that was created in a totally different file

feersum

Of course classes exist for a reason :)

Maltysen

3:29 PM

@feersum actually that's kinda the methodology python uses for self. thing.f(a,b) is basically syntactic sugar for f(thing, a, b). (basically but not completely, there are some edge cases)

feersum

Yes, I didn't say that I've never used a class.

TimmyD

Phew, that was a tough one.

But, I'm happy, because now I've added a golfed prime factorization method to my bag o' tricks.

Maltysen

@Downgoat check this out:

>>> from collections import namedtuple
>>> Vector = namedtuple('Vector', ['x', 'y', 'z'])
>>> Vector(3, 4, 5)
Vector(x=3, y=4, z=5)
>>> x={Vector(3, 4, 5): "blah", Vector(5, 6, 7): "blah2"}
>>> Vector(5, 6, 7) in x
True
>>> Vector(5, 6, 8) in x
False

Nathan Merrill

@El'endiaStarman more tests. Trees grow all at once, independent of their owner, but graves turn into trees at the owner's start of their turn

also, newly-created trees wait at least a full round before growing.

@Maltysen what's the purpose of the 'Vector' string?

pretty printing?

Maltysen

yeah

@NathanMerrill also, its the actual type

Nathan Merrill

3:40 PM

what do you mean?

Maltysen

cuz namedtuple returns a class

its called that string you put in

Nathan Merrill

...I didn't realize you could return a class

Maltysen

>>> Vector = namedtuple('Vector1', ['x', 'y', 'z'])
>>> type(Vector(3,4,5))
<class '__main__.Vector1'>

Nathan Merrill

is that reproducible magic?

Maltysen

@NathanMerrill completely

Nathan Merrill

3:41 PM

cool

Maltysen

its not even the extent of that idea

this sort of thing leads to metaclasses

@NathanMerrill:

>>> X=type('MyClass', (), {'x': 3})
>>> X()
<__main__.MyClass object at 0x7ff72458f128>
>>> X().x
3

>>> X=type('MyClass', (), {'x': 3, 'my_func': lambda self, x:2*x})
>>> X().my_func(5)
10

classes are all instances of the class "type"

(this is unrelated to the type() function of the same name)

Nathan Merrill

hmmm... I kindof expected something more along the lines of MyClass(class):

Maltysen

@NathanMerrill well you have to remember that these(and all) classes aren't inheriting from type, but rather instantiating type

if you extend from type, then you have metaclasses

Nathan Merrill

I'm still using instantiation

aka

muddyfish

metaclasses are complicated

Nathan Merrill

3:50 PM

NamedTuple(class):
    __init__(name, params):
       pass
    get_name():
       pass
    get_attr():
       pass

Maltysen

@NathanMerrill oh you mean just defining it and returning it? yeah that works

Nathan Merrill

that way, each instantiation of NamedTuple is a different class

Maltysen

the normal class syntax is just syntactic sugar for type()

Nathan Merrill

right, I get how it works. I just would have designed it differently

Maltysen

@NathanMerrill I was just a little confused cuz you used class instead of object

New Main Posts

3:54 PM

3

Q: Render the top-down view of a hip roof in ASCII

First, some terminology (source): A hip roof is (quoting Wikipedia) "a type of roof where all sides slope downwards to the walls, usually with a fairly gentle slope" A slope is a planar surface that is a part of the roof A ridge is an edge where two opposite roof slopes meet A hip is a convex e...

Releasing Helium Nuclei

4:05 PM

putchar(92-n%2*45) is the same length. — mbomb007 2 hours ago

> same length

> gets upvoted

Wtf m8

Helka Homba

Mini-puzzle: What do these numbers represent?

4335443554
2111111211

Releasing Helium Nuclei

My sadness?

zyabin101

@HelkaHomba Numbers marked 2 are 45, the rest, 33544354, are marked 1.

Releasing Helium Nuclei

Out of 10

Helka Homba

@ReleasingHeliumNuclei :( hope not

@zyabin101 Erm, not what I'm going for

zyabin101

4:17 PM

It seems 45 are present in both sections, when 3 is only in the section marked 1.

@HelkaHomba I'm trying to cut through it.

Helka Homba

ok

zyabin101

Get clues for the puzzle.

Jonathan Allan

@Dennis suggestion: Add ÆṖ as "If z is composite, then 1, else 0." as it is not the logical negation of ÆP - i.e. ÆP for -n, 0, and 1 return 0 but they are also not composite. See my answer here for example.

Martin Ender

@HelkaHomba does each column correspond to a digit?

Helka Homba

@MartinEnder perchance ;)

Releasing Helium Nuclei

4:24 PM

@HelkaHomba i dunno m8

zyabin101

I made a thing with Jelly compression. :3

feersum

The Nth column represents how funny the Nth entry of the starboard is in base 6.

Helka Homba

@zyabin101 In any other internet chatroom that would sound weird.

zyabin101

Yes :P

Jelly Ipsum, volume 1.

Martin Ender

@HelkaHomba a hint, maybe? :)

zyabin101

4:28 PM

^

Helka Homba

Ok, but only one

Martin Ender

that was the hint, wasn't it?

Helka Homba

yep

zyabin101

The numbers in the 1 section are 33544354.

Martin Ender

ah, first row is number of letters in the digit

and the second is the number of characters shared between one and the digit name

wait that breaks down for one

zyabin101

4:31 PM

@_@

Helka Homba

@MartinEnder Yes!

@MartinEnder No. You're thinking too hard

Maltysen

@MartinEnder wait how?

zyabin101

^^^^^

Maltysen

four and two?

TimmyD

'zero' = 4, 'one' = 3, 'two' = 3 ...

Maltysen

4:32 PM

oh the index

@HelkaHomba vowels

no wait nvm

Jonathan Allan

@Dennis - My guess would be call = f=lambda z: int(z>1 and z==int(z) and not sympy.primetest.isprime(z)) although I don't know if that's how you'd handle non-integers

Martin Ender

@HelkaHomba second row is syllables

Helka Homba

bingo!

TimmyD

whoa, spacing fail

zero one two three four five six seven eight nine
  2   1   1   1   .  1   1   1   2   . 1   .  1

Ignore the . ... stupid space-to-tab markdown

Helka Homba

It's kinda curious how almost symmetrical 4335443554 is

Rainbolt

4:37 PM

Gah. Just had to put commas in the number and it instantly becomes Google searchable

Well, the first one anyway

zyabin101

Baking cookies at rapid speed 12.4 cps... 12.8 cps...

Releasing Helium Nuclei

Any CMC? Another puzzle?

zyabin101

CMC: snail matrix generator.

Test case: from: 8 to:

1	2	3	4	5	6	7	8
28	29	30	31	32	33	34	9
27	48	49	50	51	52	35	10
26	47	60	61	62	53	36	11
25	46	59	64	63	54	37	12
24	45	58	57	56	55	38	13
23	44	43	42	41	40	39	14
22	21	20	19	18	17	16	15

flawr

4:54 PM

Matlab, 19 bytes: @(n)n*n+1-spiral(n)

Trash Cat - Simon's Cat

►

Helka Homba

@ReleasingHeliumNuclei What comes next? 8 8 12 2 2 3 14 15 ...

El'endia Starman

Wow. I drastically underestimated how effective Pokémon Go is at getting people (specifically me) up and about... :P

Helka Homba

I'll bet the user who first answers will have a 2 in their PPCG user id

flawr

@El'endiaStarman I still have the impression pokemon go is just a slightly modified Ingress, which I like better.

The story is obviously way different, but the gameplay in the end is quite similar. And it seems they just converted the portals to pokestops

DJMcMayhem

CMC:

5

Q: Print 10 × 10 square of X and O characters, split diagonally

I'm going through a beginners exercise for writing a small program in Java. My task is to print out (i.e. find an algorithm) the following output XOOOOOOOOO XXOOOOOOOO XXXOOOOOOO XXXXOOOOOO XXXXXOOOOO XXXXXXOOOO XXXXXXXOOO XXXXXXXXOO XXXXXXXXXO XXXXXXXXXX I have figured out how to do it but th...

java beginner ascii-art

El'endia Starman

5:06 PM

@flawr I'm not sure I even personally know anyone that played Ingress. Well, chances are good that I do, but I don't know who they are.

flawr

@El'endiaStarman Try it=)

El'endia Starman

I think I'll stick with Pokémon Go for now. :P

If the gameplay is so similar, then it doesn't really matter which one I play, right? :P

New Main Posts

4

Q: Draw an Empty Scrabble Board

A standard Scrabble board is a 15×15 grid of spaces to place letter tiles. Most of the spaces are blank but some are double word scores (pink), triple word scores (red), double letter scores (light blue), and triple letter scores (blue). There is usually a star in the very center (which counts as...

code-golf ascii-art kolmogorov-complexity board-game scrabble

flawr

@El'endiaStarman Well Ingress is objectively better.

Releasing Helium Nuclei

@flawr true

Jonathan Allan

5:08 PM

@muddyfish I have no idea, I'm too new to this game :)

flawr

And I (and everyone with that same opinion) am the ultimate authority when it comes to objectivity.

(as everyone knows)

zyabin101

Today I learned why time flies.

El'endia Starman

@zyabin101 Because someone threw a clock out the window? </smart-aleck-answer>

Helka Homba

@Adnan Damn you user 34388

DJMcMayhem

@zyabin101 0/10, does not work on mobile

Sherlock9

5:11 PM

@El'endiaStarman Remember that fruit flies like bananas and time flies like arrows.

Adnan

@HelkaHomba Huh wat?

Jonathan Allan

@Adnan wow, fast - sandbox peek perchance?

zyabin101

@HelkaHomba Huh wat?

muddyfish

@El'endiaStarman my dad played ingress and our village has 2 gyms and 3 pokestops. It has a church a postbox and a telephone box as well as a pub

Maltysen

@zyabin101 cool

Helka Homba

5:12 PM

7 mins ago, by Helka Homba

I'll bet the user who first answers will have a 2 in their PPCG user id

Adnan

@JonathanAllan I still don't understand

El'endia Starman

@muddyfish There are four gyms that I know about along the main road nearby, all controlled by Team Mystic. Something like a dozen Pokéstops too.

Adnan

@HelkaHomba Oh hahaha

Jonathan Allan

@Adnan your scrabble board was very quick :)

muddyfish

@El'endiaStarman ewww... mystic.

Adnan

5:13 PM

@JonathanAllan It's actually not that spectacular :p

Helka Homba

@JonathanAllan Me sandbox something that trivial? >.>

El'endia Starman

@muddyfish I'm probably gonna go to Team Instinct, despite everyone else bashing them. :P

muddyfish

Our gyms are mystic or instincts

Jonathan Allan

@HelkaHomba oh you didn't? OK :)

muddyfish

@El'endiaStarman go instincts! Most geeky people I know are instincts

El'endia Starman

5:15 PM

@JonathanAllan: FYI, Helka Homba is one of like two people that can reliably write a good challenge without sandboxing it first. :P

The other is Doorknob.

Adnan

@JonathanAllan I'm pretty sure that after 231 challenges, he knows how to make one haha

Jonathan Allan

@El'endiaStarman @Adnan hehe. N00b status showing :)

Releasing Helium Nuclei

@HelkaHomba i dunno

primo

@zyabin101 i don't think the theory is actually true, though. unless you could remember each year of your life approximately as well as any other

Adnan

@JonathanAllan by the way, what should I do here?

Helka Homba

5:16 PM

@JonathanAllan No big deal. I'm not seriously insulted :P

zyabin101

@El'endiaStarman There are more than two people. ~~Martin Ender~~.

Scratch that, Martin used the Sandbox.

Cyoce

This doesn't seem right to me.

2

A: Print Numbers from 1 to 10

Excel 6 bytes =ROW( Select the cells A1:A10, type the above (once only) and ctrl-shift-enter as an array formula (which links the cells in an array, with one common formula). Note the total lack of numerals entered in this process. :-)

It requires certain numbers in the cells without being included in the byte count.

Helka Homba

@ReleasingHeliumNuclei You ought to know ;) (and it may be on oeis, so...)

Releasing Helium Nuclei

@HelkaHomba oh... Ye oeis has it

In my defense, my language has more letters :p

Jonathan Allan

@Adnan - I dunno, how right is it? I see "the key is made out of five NUMBERS"

Adnan

5:23 PM

@JonathanAllan He got the answer right, but with no further explanation

So both his answers were deleted

Jonathan Allan

@HelkaHomba - I had just ass*u*med that everything went through the sandbox.

zyabin101

GitHub Pages news: you can now build GitHub pages from any branch, gh-pages branch by default, as it was before.

Dennis

@JonathanAllan That sounds useful.

Jonathan Allan

@Dennis - probably - is the z==int(z) what you would do or is there a better way?

@Adnan - then post a comment saying answers require an explanation :)

Adnan

@JonathanAllan Someone else actually did that already, but he seems to be ignoring the comment.

._.

Jonathan Allan

5:27 PM

@Adnan Out of interest how are we meant to find that the numbers are the question id?

Adnan

@JonathanAllan It's the recursion link

Jonathan Allan

@Adnan well then maybe somone will swoop in for a steal :p

Dennis

@JonathanAllan Not sure. ÆP behaves weirdly for non-integers (it rounds down).

Jonathan Allan

@Dennis you could add an int check to that call too then :)

@Adnan are we not meant to use the private key to decode after that?

@Adnan - I see the question is "do you know what the private key is" so I guess not

@Adnan well I fired into the dark (made a comment for more details)

Adnan

@JonathanAllan I'm not sure if I understand what you mean

Jonathan Allan

5:35 PM

@Dennis - That person carried on for another four hours after I decided to ignore them ^^

@Adnan by what?

Releasing Helium Nuclei

@HelkaHomba nope (34388)

Adnan

@JonathanAllan The password to the private key is the question ID

So, 41635

That gives me this key.

which is the answer

Dennis

@JonathanAllan Who?

Adnan

He did post this key in another answer, but it got deleted

Jonathan Allan

@Dennis "bb"

@Adnan - yeah I can see the deleted post :)

Adnan

5:38 PM

@JonathanAllan Oh hahaha, you got 10.6k rep

El'endia Starman

* is too high and mighty. — Helka Homba 28 mins ago

@HelkaHomba: You make me sad.

Jonathan Allan

@El'endiaStarman hehe yeah.

@Adnan - yep new to CG, not so new to Puzzling

βετѧ Λєҫαγ

cnet.com/news/…

Jonathan Allan

@Dennis - ahh silly auto voter :)

Releasing Helium Nuclei

CNet strikes again

quartata

5:42 PM

@Doorknob @EᴀsᴛᴇʀʟʏIʀᴋ @Lynn current qNetHack todo list, definitely more things to come: gist.github.com/quartata/d47671ba2d37c84888c84af32d063799

βετѧ Λєҫαγ

@ReleasingHeliumNuclei Yes, yes it does

zyabin101

@quartata check the comments >_>

I have a question there.

TimmyD

Hrm ... 2+ hours and my code for figuring out if 4937775 is a Smith number is still running. Maybe I should've put in some sort of progress bar.

2

quartata

@zyabin101 DS is going to be my replacement for dgamelaunch. A Pekka is an automaton that I stole from a certain other game

Next time just ping me

zyabin101

Okai.

@quartata, how would you register a prefix for qNetHack (since you need one)?

quartata

5:55 PM

What?

zyabin101

nethack.org/devel/prefixes.html

> NetHack uses the prefix "NHDT" internally to identify specific information (such as versions and dates) produced by the NetHack Development Team. NetHack variants should use a different prefix.

quartata

That's just for versioning?

zyabin101

> for use in the source control system.

That one is from another page, nethack.org/common/git.html

El'endia Starman

6:15 PM

@TimmyD Took my pre-written Python code a tiny fraction of a second to factorize that number. Are you running golfed and therefore inefficient code?

Eᴀsᴛᴇʀʟʏ Iʀᴋ

@quartata ruhl?

Google gives some actress

And fizzbuzzes?

TimmyD

@El'endiaStarman Ohhhh yeah. Very inefficient. Loops through the range up to the number, pulls out anything that's a prime (using a pretty damn inefficient prime check using a regex) that is also a factor, then divides by each of those. If we're still greater than one, we start the loop again.

Eᴀsᴛᴇʀʟʏ Iʀᴋ

And what are you planning for the cloud9 quest?

El'endia Starman

@TimmyD Oh yeah, that makes a lot more sense. :P

The answer is "no", by the way. 4937775 = 3 * 5 * 5 * 65837

Nathan Merrill

...are there any nontrivial perfect smith numbers?

El'endia Starman

6:23 PM

Actually, wait, do we add up the digits in the factors too?

TimmyD

@El'endiaStarman Uh, yeah it is. 4+9+3+7+7+7+5 = 42 = 3+5+5+6+5+8+3+7

El'endia Starman

@TimmyD Ah-ha, I see.

@NathanMerrill As with most conjectures regarding perfect numbers, the answer is probably "we don't know". :P

Nathan Merrill

...this might be easier to prove though

nevermind

quartata

A "vanilla fizzbuzz" sounds delicious. — iamnotmaynard Sep 25 '15 at 15:12

@EᴀsᴛᴇʀʟʏIʀᴋ Ruhls are a race of strong evil humanoids

Eᴀsᴛᴇʀʟʏ Iʀᴋ

lol

@quartata from what?

But okay

quartata

6:28 PM

From some DND module most likely. Not sure what the origin was

Eᴀsᴛᴇʀʟʏ Iʀᴋ

And the quest?

quartata

They have some special abilities

Dennis

@JonathanAllan At least in that challenge, it wouldn't have saved any bytes after all.

quartata

@EᴀsᴛᴇʀʟʏIʀᴋ The Cloud 9 one? You'll see

Dennis

1

A: Is this a Smith number?

Jelly, 12 11 bytes Æfḟȯ.DFżDSE Returns 1 for Smith numbers and 0 otherwise. Try it online! or verify all test cases. Background Æf (prime factorization) and D (integer-to-decimal) are implemented so that P (product) and Ḍ (decimal-to-integer) constitute left inverses. For the integers -4 to...

Eᴀsᴛᴇʀʟʏ Iʀᴋ

6:29 PM

@quartata -.-

quartata

now now

Jonathan Allan

@Dennis I couldn't work out how to do anything like that!

Rainbolt

I just had this interaction with a tester:
Me: "What is the expected result?"
Tester: "I expect that it to not take 5 seconds to load."
Me: "Okay, so if it takes 7 seconds, then the bug passes?"

Jonathan Allan

@Dennis Oh Æf yields with multiplicity. dammmn.

Nathan Merrill

@Dennis thanks for posting this. I was looking for something to test my "are there any perfect smith numbers"

@Dennis also, I have no idea how its so fast. I tested it with "191561942608236107294793378084303638130997321548169216", and it returned in a second

TimmyD

6:34 PM

Ahaha. This answer on Puzzling is awesome.

El'endia Starman

@TimmyD Soundly beaten by this one. :P

Jonathan Allan

sigh when deliveries are "delivered" but not.

TimmyD

@El'endiaStarman Yeah. But given that the answer you linked was inspired by the answer I linked, I'm going to count the answer I linked as better. Also, because I saw it first and posted here and then kept reading the answers, and so didn't see the BB one until later.

El'endia Starman

Valid points. I do like the out-of-the-box cleverness of G900. :P

Dennis

@NathanMerrill The factorization happens instantly; that second is only Jelly's start-up time. It has lots of small prime factors, so it's rather easy to factorize.

Nathan Merrill

6:45 PM

ah, I wasn't sure what its factors look like

that said, if it is a smith number, they are likely small

Dennis

[2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 618970019642690137449562111]

Nathan Merrill

maybe?

New Sandboxed Posts

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A: Sandbox for Proposed Challenges

Outputting x to y code-challenge kolmogorov-complexity restricted-source Challenge You must choose one number x (y = x + 10) and create ten unique programs which each print out one of the numbers in the range x to y inclusive. However, there are three twists: Each program's score is the diff...

El'endia Starman

Oooh, lemme try that number with my Python code.

Nathan Merrill

@Dennis checking that last number for primality still isn't trivial

βετѧ Λєҫαγ

6:45 PM

@NewSandboxedPosts This may need some more rules to tighten this up

El'endia Starman

Hmm, it's taking a fair bit of time. Because of that last factor, I would hope.

TimmyD

@βετѧΛєҫαγ Are you ... are you talking to yourself?

βετѧ Λєҫαγ

@TimmyD I'm talking to everyone

Me needs sum helpz

El'endia Starman

@TimmyD What's so strange about talking to yourself? I do it sometimes...

@El'endiaStarman Yeah, you certainly do.

TimmyD

Nevermind. Poor attempt at humor.

Dennis

6:49 PM

@El'endiaStarman My father used to say that it's the only way to have an intelligent conversation.

Nathan Merrill

KoTH question: I'm passing a Map to submissions. This Map has lots of functions you can call, some of them are actions that players are allowed to do, some of them aren't. Is it a good idea to created a "locked" variable type, so that players can only do what they are supposed to? It can be pretty inefficient, as it often requires doing extra checks and and coping extra data

Dennis

@NathanMerrill There are well-known shortcuts for numbers below certain thresholds. I'd expect SymPy to take advantage of them.

Rainbolt

@NathanMerrill Make two interfaces

Players get handed an IPlayerMap, your controller works with an IControllerMap

Alternatively, make the functions you don't want players to call package private, and put submissions in another package

Nathan Merrill

oooh...I've never actually had a need for package private

that said, there's still some lockdown that's needed

Rainbolt

I meant package private in the English sense of the phrase... is that actually a thing?

Nathan Merrill

6:56 PM

yep!

docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html

My map is split up into territories. A player can place units on their own territories

Rainbolt

Oh... huh. It's the default.

Nathan Merrill

but they can't place units on other territories

feersum

Maximum laziness: have a variable for whose turn it is in the map object.

Nathan Merrill

but you're right. If I don't place "guards" on the function calls themselves, then players will abuse it

actually, I could just give them a readonly map, and a list of writable territories they own

that would work

Rainbolt

Let me get this straight: I get a map, and I own (2,4) but I don't own (8,8). If I call place(2,4) then that should be allowed, but if I call place(8,8) then that should not be allowed?

Nathan Merrill

6:59 PM

@Rainbolt yep :)

TimmyD

... and, I get a stackoverflow error. Well. RIP search for 4937775 as a Smith number.

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