The Nineteenth Byte

Helka Homba

03:00

CMC: Given a +int, if it is any of 123 234 345 456 567 678 789 output truthy, else falsy.

Rohan Jhunjhunwala

@LeakyNun test passed, but you had written c<a instead of c<b now the output matches the comments. Commiting now, and drafting some slipshod documentation

Dennis

@HelkaHomba Jelly, 6 bytes: DI⁼1,1

Helka Homba

What program can Jelly not do in 6 bytes -.-

Dennis

Highlight the Bounding Box...

Conor O'Brien

one that it does in 5 :P

Leaky Nun

03:04

@RohanJhunjhunwala so it means it didn't pass?

Rohan Jhunjhunwala

@LeakyNun it did.

@LeakyNun your comment for output was wrong that's all

you had 3<3 = 12

Leaky Nun

@RohanJhunjhunwala well, 3<<2 should be 12 right

Oh, sorry

Rohan Jhunjhunwala

@LeakyNun you did 3<3

@LeakyNun its ok corrected and commited

Leaky Nun

nice

Business Cat

CJam, probably terrible, 13 bytes: q:i_:+\1=i3*=

Geobits

03:06

Java, definitely terrible, 63 bytes: boolean f(int a){return a<999&a>99&"123456789".contains(a+"");}

DLosc

@HelkaHomba Simulate a Turing Machine, maybe? (Watch it have a builtin that does that...)

Rohan Jhunjhunwala

@LeakyNun whats | do?

Helka Homba

@Dennis I may be mistaken but with just the 6 bytes everything gives 0

Leaky Nun

@RohanJhunjhunwala oops, I definitely confused myself

I meant :

Geobits

Wait, 62: boolean f(int a){return"123456789".contains(a+"")&a<999&a>99;}

DJMcMayhem

03:07

@HelkaHomba Naïve first implementation, 12 bytes: VttY>=wdp*1=

Oh shoot, that's wrong

Dennis

@HelkaHomba Huh. Are you putting the input in STDIN or CLAs?

Leaky Nun

@Geobits boolean f(int a){return(a-123)%111<1&(a-123)/111<7;}

Business Cat

CJam, golfed to 9 bytes: 9,:)sq#0>

Rohan Jhunjhunwala

@LeakyNun it still passes

Helka Homba

@Dennis ..nevermind

Geobits

03:10

@LeakyNun I think you can cut the && to & also.

Conor O'Brien

@Dennis @LeakyNun List of decimal digits in J: 10&#.inv. Is there a shorter way that I'm overlooking?

Leaky Nun

@ConorO'Brien no there isn't

Conor O'Brien

oh well.

Geobits

@LeakyNun boolean f(int a){return(a-=123)%111<1&a/111<7;}

Leaky Nun

@Geobits nice

and I still have no idea how to do it in Brachylog efficiently

Helka Homba

03:12

Conor O'Brien

hey, you look like me :D

DLosc

@HelkaHomba Pip, 8 bytes: $=$-*ENa

I am inordinately proud of that solution. :P

Helka Homba

Anyone want me to make that a real challenge?

I kind like it, despite simplicity

Dennis

That 123 thing? Sure.

Business Cat

I'll patiently wait to put my answer :P

Conor O'Brien

03:14

wait let me make a builtin first

:P

Rohan Jhunjhunwala

@LeakyNun alll right, thanks for your help. It is tested, and should be ready

@Dennis please pull SILOS if you get a chance

DLosc

... Until I look at Geobits' Java and realize that it can be done in 6 bytes much less elegantly: $=a-12

Leaky Nun

@Geobits boolean f(int a){return(a-=12)%111<1&a/111<7&a>0;}

because a might be 12

@DLosc you remind me

Dennis

@RohanJhunjhunwala Done.

Leaky Nun

@HelkaHomba Brachylog, 10 bytes: l3,?:12-#= (input has length 3 and input minus 12 has all equal digits)

DLosc

03:16

@LeakyNun No, vice versa--I saw yours and edited mine.

Geobits

@LeakyNun Hmm. It seems like there should be a better way to check that :/

Rohan Jhunjhunwala

@DLosc thanks!

Leaky Nun

@DLosc I mean the #=

Guys, "has all equal digits" or "has all digits equal"?

DLosc

@LeakyNun Ah, I see. I was referring to subtracting 12 instead of 123.

Business Cat

@LeakyNun I think either works

The first one is maybe a bit better

Leaky Nun

03:18

@Geobits how?

DLosc

@LeakyNun Both of them sound slightly stilted to me--I would probably say "and all digits of input minus 12 are equal."

Leaky Nun

@DLosc I would interpret it as (all digits of input) minus 12

@DLosc nope

Geobits

@LeakyNun I don't know. I'm staring at it hoping that something comes to me, but I'm not so sure. I just hate when edge cases force a hastily-tacked on addition :(

Leaky Nun

@DLosc to me also

DLosc

@LeakyNun Rgh, I was assuming input would be three digits. Fixing...

Leaky Nun

03:21

@HelkaHomba Brachylog, 13 bytes: l3,?:12-#=d<8 (input has length 3, input minus 12 has all digits equal, which when deduplicated is less than 8)

Rohan Jhunjhunwala

@LeakyNun I think there is something borked with functions

Leaky Nun

@RohanJhunjhunwala that's very specific, thanks

open an issue there

Rohan Jhunjhunwala

@LeakyNun I will, I'm trying to reproduce

Helka Homba

Is it falsy or falsey?

Downgoat

@HelkaHomba whatever you want

Geobits

03:23

@Leaky Is there a reason you're dividing by 111 instead of just a<778 or similar? I'm not seeing it off hand.

Leaky Nun

@Geobits because I'm stupid that's why

Downgoat

27

Q: Is it "falsy" or "falsey"?

I have seen both versions of the word, falsy and falsey. It can mean "something that is equivalent to false" in computer science, such as "The only two falsy values in the Ruby Language are false and nil". What is the correct usage of this word?

Leaky Nun

in Brachylog, Aug 10 at 13:16, by Leaky Nun

I'm the stupidest person ever

Geobits

@LeakyNun Haha, I was double checking myself with a bunch of dumb test cases to see if I could figure out where it would fail :P

Rohan Jhunjhunwala

@LeakyNun I think it's good, but an odd bug has been introduced in my older code for "Output fit numbers"

DLosc

03:24

@LeakyNun Even uglier, 11 bytes, but works for all positive ints: #a=3&$=a-12

Leaky Nun

@DLosc all positive ints except 900

DJMcMayhem

@HelkaHomba Fixed, and golfed Vd1=tn2=*

Downgoat

@LeakyNun you have gotten almost 16K rep in 7 months. Not even most smart people can do that

Leaky Nun

@Downgoat that's because I got no life

DJMcMayhem

@LeakyNun Well yeah, but neither do any of us. The only difference is that you're better at having no life than most of us. :P

DLosc

03:26

@LeakyNun Ahh, good corner case. So the "subtract 12 or 123" approach doesn't actually work.

Downgoat

@LeakyNun none of us do :P you're a very good golfer and for that you need to be smart.

quartata

@ConorO'Brien Any news on TI ELEGANT?

Leaky Nun

@DLosc it works

Conor O'Brien

@quartata thanks for remembering :) none good. Z80 manual is arcane and largely unreadable, and school is not helping much :P

quartata

Maybe you'll have better luck compiling to C

Downgoat

03:28

question: what's a word for like susceptible to brainwashing? It's stuck on the tip of my tounge

Conor O'Brien

@quartata but then I can't very well compile that to the calculator can I?

Maltysen

@Downgoat gullible?

DJMcMayhem

@Downgoat Gullible

Downgoat

yes that is it thx

DJMcMayhem

Friggin ninjas everywhere

quartata

03:28

Sure you can.

Conor O'Brien

:O

WAT

quartata

?

Conor O'Brien

how

Leaky Nun

@DJMcMayhem change two letters to g and you'll be flagged (that happened in my mind when I was reading it lol, stupid mind)

Helka Homba

@DJMcMayhem Go post here and stop pinging me :P

0

Q: As Easy as One-Two-Three

Write a program or function that takes in a positive integer. You can assume the input is valid and may take it as a string. If the number is any of 123 234 345 456 567 678 789 then output a truthy value. Otherwise, output a falsy value. For example, the inputs 1 2 3 12 122 124 132 321 457 77...

code-golf number integer

Conor O'Brien

03:29

how do I do this ._.

Downgoat

@HelkaHomba ... how can you make two challenges in two hours O_o surely you are machine

Leaky Nun

2 days ago, by ASCII-only

Typical Helka, posting a CMC attracting so many answers that it fills chat for two hours.

quartata

Using a compiler? gcc supports almost everything under the sun and I'm sure the z80 is no exception

Maltysen

@ConorO'Brien idk what you're talking about but if its compiling C to TI, processors.wiki.ti.com/index.php/TI_Compiler_Information

DLosc

@LeakyNun Well yeah, but much shorter now to do #a=3&$=$-*ENa

Conor O'Brien

03:30

@Maltysen ._. wow

Helka Homba

@Downgoat This one was cake to write

quartata

You'll need to use some assembly for screen output probably

Maltysen

@HelkaHomba i notice how you are not denying being a machine

Downgoat

^

Helka Homba

@Downgoat And getting downvotes since it is admittedly bland

DJMcMayhem

03:32

@LeakyNun I feel really stupid asking this, but which letters would you change to G?

Leaky Nun

@DJMcMayhem certain two letters in ninja

DJMcMayhem

ooooh, I thought you meant two letters in friggin

Helka Homba

@Maltysen Well, I'm not anymore.

New Main Posts

2

Q: As Easy as One-Two-Three

Write a program or function that takes in a positive integer. You can assume the input is valid and may take it as a string. If the number is any of 123 234 345 456 567 678 789 then output a truthy value. Otherwise, output a falsy value. For example, the inputs 1 2 3 12 122 124 132 321 457 77...

code-golf number integer

Conor O'Brien

@NewMainPosts *it's as easy... ftfy

Downgoat

03:39

@HelkaHomba yeah. It's basically check if three digits long and increasing sequentially

DLosc

@HelkaHomba You may want to add 900 and 1011 as test cases, since those (especially 900) bit me earlier.

DJMcMayhem

What's the best lossless compression format for .RAW photos that works easily with mac?

Helka Homba

@Downgoat Someday I'll challenge myself to make 24 challenges in a day, one per hour, someday...

Nathan Merrill

trying to flood the HNQ list, eh?

Sherlock9

@LeakyNun Have a look? codegolf.stackexchange.com/a/91598/47581

Downgoat

03:46

@DJMcMayhem is lossless RAW compression even a thing

Leaky Nun

@Sherlock9 I think you'll need to get used to golfing without me... at least for 8 months or so

DJMcMayhem

I'd assume so

How efficient it is another matter

Wouldn't even .zip be able to compress them atleast somewhat?

Maltysen

@LeakyNun are you going somewhere?

Leaky Nun

2 days ago, by Leaky Nun

I'm going to take a long break from this site

Sherlock9

@LeakyNun I know. I figured I'd ask while you're still here

Leaky Nun

03:47

(@Maltysen read all subsequent messages)

Maltysen

@LeakyNun good luck on your exam, and also i give you 3 days before you break your self-imposed ban

Leaky Nun

@Maltysen Fatalize only gave me 1 day

Sherlock9

I almost said that I should compile yet another list of my Actually starting Thursday, but I realized I could search actually user:47581 :D

I give him a grace period of a week of getting used to not going here daily. After that... 10 days :D

Sp3000

@primo :) did you write a new brute force? Because you sure found the extra solutions fast!

Helka Homba

Wish the letters hadn't gotten so dark

DLosc

03:57

@HelkaHomba Now is your chance to write a challenge involving Deep Dream somehow.

El'endia Starman

@HelkaHomba Sometimes the pattern is pretty obvious, like in this case. :P

Helka Homba

@El'endiaStarman Still purdy

El'endia Starman

Oh, no doubt.

Leaky Nun

@Sherlock9 Other than writing :11 as 4P, I am unable to come up with any golf advice

@Sherlock9 That means 17 days?

DLosc

Leaky Nun

04:07

strawpoll.me/11113496

DLosc

You can buy literally anything on eBay, it seems.

Geobits

Hmm. Is the poll binding? As in, do you agree to break it based on the results? :P

Leaky Nun

@Geobits nope, it's just what you guys think of my willpower

Geobits

Fair enough. My money's on 7-30 days.

El'endia Starman

Hmmmm. I'll go with 3-7 days.

Geobits

04:12

What exactly counts as breaking? Any activity on main/meta/chat? "Last Seen" on profile?

Also, just this site or SE as a whole?

Leaky Nun

@Geobits I'll logout from this site on all my devices

@Geobits some guys in chem.SE may actually help with my revision

Geobits

K. So I'll ping you in a week or two to see how you're doing ;)

Leaky Nun

@Geobits and I'll reply to the ping next year

Geobits

Cool. It'll be like a time capsule.

Leaky Nun

Why do you guys think so lowly of my willpower ;_;

Maltysen

04:15

@LeakyNun no, 1-3 days is a compliment

:P

Leaky Nun

...

Sherlock9

@LeakyNun Nuts. Thanks anyway

DJMcMayhem

We don't think lowly of you, we think (and know) highly of the addictive properties of this site.

Sherlock9

@LeakyNun Yep

Leaky Nun

@Sherlock9 do my poll

DJMcMayhem

04:16

1

A: As Easy as One-Two-Three

Brain-Flak, 98 + 3 == 101 bytes ([]<>)<>({}[({})]<>)<>({}[({})]<>)({}{}[()()])({}<({}[()()()])>)(({}{}<(())>)){{}{}(((<{}>)))}{}{} This code is 98 bytes long, plus three for the ASCII flag: -a. Do I get a badge for having the longest answer so far? :P You can Try it online! here, but this v...

Leaky Nun

@DJMcMayhem ninja'd by the upvote

DJMcMayhem

That was fun. I love this new ASCII mode

I guess I can't really complain about that.

Leaky Nun

@DJMcMayhem I thought you should take in integer

Geobits

@DJMcMayhem Stop taking my coveted longest-answer position.

DJMcMayhem

@Geobits :D Maybe we just need to invent javaflak

Sherlock9

04:18

Good lord, that would be a mess

Leaky Nun

Would you guys mind if I paste the poll here every certain hours?

DJMcMayhem

Depends on how often every certain hours is.

Lynn

@quartata Hmm. What about vegetarian/vegan conducts?

Leaky Nun

@Lynn have you done my poll?

Lynn

strawpoll.me/11113496 this one?

Leaky Nun

04:24

@Lynn yes, thanks for thinking highly of my willpower (not high enough)

Lynn

I voted!

El'endia Starman

The Schlieren effect is so cool!

Maltysen

hah cool

Downgoat

@El'endiaStarman woah wat

Leaky Nun

Now who the hell voted for t < 1 day?

Maltysen

04:33

@El'endiaStarman is it cuz of changing refracting index?

El'endia Starman

@Maltysen Yup!

Maltysen

still have no clue how it actually works tho...

DJMcMayhem

Hahahaha: imgur.com/gallery/iiAf4/comment/715392065

El'endia Starman

@DJMcMayhem Ha! I guessed the comment you linked to! :P

DJMcMayhem

The funniest one

I had to login just to upvote that.

El'endia Starman

04:40

@Maltysen Parabolic mirror focuses light into a single point. Said point is put at a razor's edge so only part of it gets into the camera. Refractive index changing means that light takes different paths than usual, so more or less of it goes into the camera. Ta-da, changing brightness!

@Maltysen Also, check out this:

Schlieren photography

Schlieren photography is a visual process that is used to photograph the flow of fluids of varying density. Invented by the German physicist August Toepler in 1864 to study supersonic motion, it is widely used in aeronautical engineering to photograph the flow of air around objects. == Classical optical system == The classical implementation of an optical schlieren system uses light from a single collimated source shining on, or from behind, a target object. Variations in refractive index caused by density gradients in the fluid distort the collimated light beam. This distortion creates a spatial...

Leaky Nun

--advertisement--

Code Golfer's Corner

Discussion specific to golfing code. For general PPCG chatter ...

--advertisement--

chat.stackexchange.com/rooms/44545/sil-silos

--advertisement end--

Maltysen

@El'endiaStarman cool

so if it has a different refractive index, then it won't go through the same focal point?

El'endia Starman

Right.

Maltysen

still don't get how the knife edge manages to cut off only the beams with lower densities

how does it always work out to that?

El'endia Starman

Well, it doesn't exactly. The focal point shifts. Perhaps above, perhaps below the edge.

Downgoat

04:49

@LeakyNun -1 for imbalanced --adevertisement--/--advertisment end-- pairs :P

Leaky Nun

@Downgoat alright

Downgoat

@DJMcMayhem halp how to hide ^Ms in vim

Maltysen

@El'endiaStarman oh yeah, the dark and light patches don't actually correlate to higher or lower densities

DJMcMayhem

@Downgoat Hide or remove?

You can hide them, but I don't think you want to

Downgoat

@DJMcMayhem :/ they only show up when as root user :/

DJMcMayhem

04:51

o_O wat

Downgoat

wait nvm

Leaky Nun

Guys, who will write my farewell question ^.^

DJMcMayhem

@LeakyNun I'll write 24 Alphabet challenges in a single day in honor of you.

:P

Leaky Nun

@DJMcMayhem what's your timezone?

in the case with the slightest probability that you are serious, you should start today

DJMcMayhem

MST (which cause of stupid daylight savings is MDT right now)

And no, I was kidding.

Leaky Nun

05:06

alright

DJMcMayhem

I'll see if I can come up with a Kenny-themed challenge though.

Leaky Nun

thanks

Downgoat

@DJMcMayhem do this and I will consider you a rank above Helka Homba in terms of challenge writing.

@LeakyNun >_> I will try but idk if I can beat dr ham jam's alphabet proposal

DJMcMayhem

@Downgoat Wait really? Quality irrelevant, just crank enough out fast enough?

Leaky Nun

@Downgoat ugh, he was joking, so you can beat a non-existing chalenge

@DJMcMayhem Coming up with 24 challenges in one day in which none gets closed is very quality relevant

DJMcMayhem

05:08

That's true, but nobody had mentioned staying open yet.

Leaky Nun

@DJMcMayhem obviously closed challenges do not count

El'endia Starman

You'd probably get question-banned before you hit 24 questions. :P

primo

@Sp3000 I did. One more I over-looked initially:
--[[+<]>>+>++]<-.<[--->-.<]

DJMcMayhem

I'm really really hoping to get socratic. I'm at 58% right now, but making progress very slowly...

It's a lot harder than it sounds

primo

Kind of a special case.

Sp3000

05:14

Nice :P I should probably reimplemented mine, Python's too slow for this

primo

RPython ;)

Sp3000

... Ah :P

(On a side note, I now have a ~2MB file of random BF tapes which are fun to go through to see if they're useful for past challenges)

primo

it's also a big advantage to mathematical approaches, you don't need to evaluate bf code

Sp3000

Like the recurrence one for HW, I'm guessing? :P

primo

yeah ;)

you can crunch thousands/millions of times faster that way

Sp3000

05:25

Based on the results so far, I get the feeling HW is still very golfable, but I'm fairly certain the optimal solution will be beyond comprehension

(e.g. I'm not sure if you saw, but I don't think I'd be able to come up with the Fibonacci tape myself)

ASCII-only

HW?

primo

e: ++++++.

yeah, i'd say that's golfable >.<

Sp3000

Hello, World! (in reference to primo's BF answer)

ASCII-only

@DJMcMayhem But I thought maximum was 6/day

DJMcMayhem

I don't think there is any maximum

ASCII-only

05:29

But I'm sure I read it somewhere

Maybe

primo

@Sp3000 JIT bf interpreter: codepad.org/Ax9wTsEQ

compile:
python \path\to\rypthon\bin --opt=jit bf.py

Sp3000

Does it give that much of a speedup? (I'm guessing so, but I don't know how much by)

Maltysen

@primo can't you just use pypy?

primo

5-6 times over pypy

Maltysen

o

Sp3000

05:33

Nice :o

Also - I think I just found 24: ++[<++[++<]>>>+]<[-<-.>]

feersum

Brute forcing is fun.. what are we trying to make?

primo

works!

feersum

I don't get it. Why would you want to print ZYXWVUTSRQPONMLKJIHGFEDCBA@?>=<;:9876543210/.-,+*)('&%$#"! ?

primo

16

Q: Brainf*ck Loop Problem

I have a problem for a cyber club that asks you to print: ZYXWVUTSRQPONMLKJIHGFEDCBA@?>=<;:9876543210/.-,+*)('&%$#"! Using Brainf**k in 29 bytes or less without using the ',' character. I have a working code: ++++++++++[>++++++>+++++++++<<-]>-->.<[>-.<-] However my loop is too long, sendi...

code-golf tips brainfuck

oops

ASCII-only

@Sp3000 do you have the brute forcer source online?

primo

05:40

@Sp3000 I declare this solution optimal

feersum

I wonder if this problem was created by typing some random instructions in BF, and then asking to produce its output as a challenge

Sp3000

Not on me, no - it's at home atm (also not very optimised)

ASCII-only

What language?

Sp3000

@primo I was about to say that, but I think I'll take one step back and say "I declare this solution optimal for this approach" :P

Python (hence not very optimised)

ASCII-only

Hmm, would PyPy's memoization help at all?

Sp3000

05:43

Probably would, might have to try RPython to compare. Either that or actually use C.

@feersum That's exactly what Martin thought as well, and tbh I think that's quite likely :P

feersum

If I were doing this I'd just write the machine code for the programs straight to memory.

Since there are so few instructions it wouldn't be much of a hassle.

ASCII-only

No wrapping?

Sp3000

I was assuming 8-bit here (as was primo)

ASCII-only

Wait, no whitespace allowed in output?

Sp3000

OP's program has a trailing space, so I was working under the same assumption

ASCII-only

05:53

I think it might be possible that the cyber club didn't realize they printed control characters (i.e. use esolangs' constants page to do this: +[->---[-<]>-]>-[-.])

Helka Homba

So I was looking for another techy place to hang out online, and I'm a fan of LinusTechTips so I thought I'd try their forum. But then this was their most popular programming post:

> The goal here is to make a useful program, that an end user is capable of using, that is under 100 lines!

Sp3000

@primo btw the reason I'm not so quick to call this optimal is because there's still the possibility of something like this: ++++[[+<]+[>]<+]<[<.] (however unlikely :P)

Maltysen

@HelkaHomba lel

Helka Homba

Are we spoiled by code golf, or demented? Or just elitist :P

Maltysen

@HelkaHomba oh, wait that says 100 lines

not chars

Helka Homba

06:01

yes

ASCII-only

Also can't you just remove all newlines

Maltysen

wth, even without PPCG, I doubt that that would be a challenge

ASCII-only

> Hey guys, here's a python program that takes a base 10 number ( what we count in) and return it in any base you want. If it's between 2 and 36 it returns a number like 0xFF (255 in hex) and any thing over 36 it returns it as "[2, 45, 3] With a radix of 60" (9903 in base 60;

But python has a builtin for that

Maltysen

@ASCII-only no it doesn't

it has the inverse

Sp3000

Not the over 36 part

ASCII-only

06:05

Fair enough

Maltysen

and even below 36 it only does specific bases

like 2, 8, 16

Sp3000

Oh right, inverse, I see

ASCII-only

Still you don't use 36 lines to convert 10-35 to A-Z

Maltysen

@ASCII-only no python actually doesn't have that builtin

it has int(string, base) but not the opposite

ASCII-only

@Maltysen I know

But that guy declared a dictionary with one entry per line

to change 10-35 to A-Z

why ;_;

feersum

06:07

Does it support base -909?

Maltysen

link plz

ASCII-only

linustechtips.com/main/topic/26333-the-under-100-line-challenge/…

Maltysen

holy jesus

and each entry of the dict is on a different line

and its not like that's the most pythonic way to do it or anything

ASCII-only

Horrible non-golfed recursive one-liner: f=lambda n,b,a=[]:n//b and f(n//b,b,[n%b]+a)or [n]+a

Helka Homba

@ASCII-only Mini-challenge: Write a no-arg python function that returns the dict {0: '0', 1: '1', ..., 9: '9', 10: 'A', 11: 'B', ..., 35: 'Z'} that you wouldn't cringe to see as production code (not code golf).

DJMcMayhem

06:19

Just 0-9A-Z?

Helka Homba

yes

0-35 mapped to those

ASCII-only

Wait a sec

Sp3000

import string

def get_digits_dict():
    return dict(enumerate(string.digits + string.ascii_uppercase))

The "no args function" part makes me cringe slightly though :P

DJMcMayhem

@Sp3000 Oh. That's way better than mine.

I wrote this:

def d():
    dict = {}
    for i in range(36):
        if i < 10:
            dict[i] = chr(48 + i) #ASCII value of '0'
        else:
            dict[i] = chr(65 + i - 10) #ASCCI value of 'A'
    return dict

Destructible Watermelon

yo!

DJMcMayhem

06:26

Alright, let's try that again:

d = lambda: dict(enumerate(map(chr, list(range(48, 58)) + list(range(65, 91)))))

Wow, that's a lot of parens

ASCII-only

@DJMcMayhem 0/10 lambda in prod assigned to a variable

DJMcMayhem

;_;

Sp3000

Lambda's fine in prod... just not like that :P

DJMcMayhem

Why would you have not done a lambda there?

Cause IMO, lambdas are for when you need a function to be unnamed, or if the function is basically just a one liner.

ASCII-only

But you want that to be named

In general if you want a name, use a def in production

DJMcMayhem

06:28

Yeah, but it's just a one liner

Sp3000

Personally I'd go with a def is the function is even somewhat nontrivial, especially if you want to docstring it

DJMcMayhem

Although d is a terrible function name, I will admit

ASCII-only

In most other languages it's not as trivial ;_;:

function getDigitsDictionary() {
  dictionary = {};
  for (var i = 0; i < 36; i++)
    dictionary[i] = i.toString(36).toUpperCase();
  return dictionary;
}

64

A: Which is more preferable to use in Python: lambda functions or nested functions ('def')?

If you need to assign the lambda to a name, use a def instead. defs are just syntactic sugar for an assignment, so the result is the same, and they are a lot more flexible and readable. lambdas can be used for use once, throw away functions which won't have a name. However, this use case is ver...

DJMcMayhem

Fine.

Leaky Nun

@Sp3000 what did you mean?

DJMcMayhem

06:32

But it's really PPCG's fault! I've spent so long on here, that my brain has learned short == good and I can't get it out of it!

Sp3000

@LeakyNun In regards to...?

Leaky Nun

@Sp3000 my bf answer

Sp3000

Oh, you've basically done it (came up with basically the same 33 independently)

Leaky Nun

nice

@Sp3000 there's a way to make 32.

Sp3000

Hmm unless there's a way to ditch the [<]<[<]<[<]< train, I'm not seeing it

DerpfacePython

06:48

Hello

New Main Posts

0

Q: Climbing binomial tree to find the option value

Background: In finance, the binomial options pricing model (BOPM) is the simplest technique used for option pricing. The mathematics behind the model is relatively easy to understand and (at least in their basic form) it is not difficult to implement. This model was first proposed by Cox, Ross, ...