The Nineteenth Byte

HyperNeutrino

18:02

@StepHen Would you like some free rep

Step Hen

I'll post it, it just doesn't feel right :P

and why are you upgrading version numbers just to fix a bug? :P

HyperNeutrino

hm. that's a good point. I wouldn't feel comfortable with that either xD

you don't have to if it doesn't feel right :P I can ask someone else

Step Hen

yeah I don't wanna

ppperry

I'm working on an (unrelated) solution

Step Hen

I was trying to do it in Obj-C but I can't get math functions working

@ppperry then I def won't post it

ppperry

18:04

ok

HyperNeutrino

ah ok. it doesn't matter; it's better if I can save Proton for later :P

oh bugfix took literally 12 characters ಠ_ಠ

Step Hen

@HyperNeutrino still going to call it v2.0? :P

HyperNeutrino

v1.0

but no, I'm merging it into the old version because it's not even really a big fix

Dead Possum

@Okx Oh, ok

Anonymous

v1.0v2.0

2EZ 4RTZ

18:08

Do messages about flags get flagged?

I see a lot of that

Step Hen

@2EZ4RTZ there was one squabble about it once that's all

HyperNeutrino

Not often I think

2EZ 4RTZ

Yeah tat is what I thought

Thanks

Step Hen

@HyperNeutrino why did you make them separate versions? for challenges?

2EZ 4RTZ

Would you die to save a member of TNB

HyperNeutrino

18:10

mostly that.

Okx

no

Step Hen

@2EZ4RTZ no, I'm not going to die to tie your shoes

Okx

my life is more important than anyone else's

:P

HyperNeutrino

depends on who it is. if it's a person, then no. if it's a bot, then no

2EZ 4RTZ

Not me XD

HyperNeutrino

18:11

who voted yes :o

ppperry

So, it doesn't depend who it is, then

(I voted no)

Okx

yeah it does no and no are different

2EZ 4RTZ

Well I know who not to trust with my life :P

@Okx No

Okx

because one is the opposite of yes and the other one is the opposite of the opposite of the opposite of yes

Step Hen

I'll probably keep a commit for the current version of cQuents, but I'm not putting both versions on TIO, the current version is crap

Erik the Outgolfer

18:13

@isaacg heh thanks now people won't be misled anymore :p

Step Hen

everybody like using b~ for bitwise not and \ for two byte functions

DanTheMan

Quick question, how do I get the length of an array in MATL?

2EZ 4RTZ

@DanTheMan length.array.length.value.of.array

Step Hen

@DanTheMan MATL spec is a PDF so I can't search it :(

HyperNeutrino

there's also a .tex

DanTheMan

18:19

On matl.suever.net there's a searchable documentation thing, but when I search for length, I don't get anything relevant

HyperNeutrino

n   number of elements in array / size along each dimension
    1; 1-- (1 / number of dimensions of first input)
    numel. For several outputs, or a single output other than the first, gives size along those dimensions

DanTheMan

Thank you!

Step Hen

@HyperNeutrino ha that's why you hit send not enter

HyperNeutrino

@DanTheMan searched for size :3

@StepHen ಠ_ಠ

\o/

ppperry

well, like I predicted it's too slow to compute the second term

because my prime check doesn't stop at the sqrt

Step Hen

18:23

@ppperry that's ok, all the other pgms were too

ppperry

ok

Step Hen

@ppperry as long as, with infinite time and memory, it gives the right answer for the first 1000 inputs :P

ppperry

ok

HyperNeutrino

As long as it theoretically works up to n=1000 it's fine even if it won't finish before the heat death of the universe

feature-request-request: What syntactical construct should I add to Proton next?

Mr. Xcoder

@DanTheMan Are you planning to solve something in MATL? I am a beginner too, so maybe can help

Step Hen

18:25

@ppperry and don't forget it needs to be 0-indexed

ppperry

I added that already

Mr. Xcoder

@HyperNeutrino What are the options?

Step Hen

@HyperNeutrino given an element, output the number of protons

or whatever it is that make H=1, He=2, etc

and the uuus in the 100-teens

HyperNeutrino

ಠ_ಠ

Step Hen

and if you really care, another function that does the same thing but does valence electrons

Mr. Xcoder

18:27

@HyperNeutrino Do you have ternaries?

HyperNeutrino

@Mr.Xcoder idk, other than functions and classes, I can't think of things I'm missing and those will take longer

@Mr.Xcoder yes

ppperry

and of cource, my bytecount has already been used

just need to add a random filler byte somewhere

Step Hen

@ppperry add some padding :P

Mr. Xcoder

@HyperNeutrino Maybe something like closures?

Business Cat

@HyperNeutrino Try-catch

HyperNeutrino

18:28

what are those?

@BusinessCat done

Step Hen

@Mr.Xcoder as of yesterday he didn't have scope :P

HyperNeutrino

:P that was easy k

Mr. Xcoder

@HyperNeutrino Let me write an example

HyperNeutrino

all I needed to do was deepcopy my scope and merge existing globals back in

Business Cat

Can't do closures without functions

Step Hen

18:28

@HyperNeutrino if you use a local var inside a local function, that is called after you leave the outside function, the local var still has a value

ppperry

How about the next sequence being a simple recursive formula.

Step Hen

you can only have closures if you have nested functions iirc

Mr. Xcoder

@HyperNeutrino Do you have functions? If you don't, you cannot have closures

Closure (computer programming)

In programming languages, closures (also lexical closures or function closures) are techniques for implementing lexically scoped name binding in languages with first-class functions. Operationally, a closure is a record storing a function together with an environment: a mapping associating each free variable of the function (variables that are used locally, but defined in an enclosing scope) with the value or reference to which the name was bound when the closure was created. A closure—unlike a plain function—allows the function to access those captured variables through the closure's copies of...

Business Cat

@HyperNeutrino Remember your problem with Ceres where you had to change it to have a function generate the function for an operator? That's a closure

HyperNeutrino

@BusinessCat huh what do you mean?

Business Cat

18:30

I think it was with Ceres

Step Hen

if you've done javascript async stuff, it's what lets async event handlers still reference vars in the same scope as them

HyperNeutrino

You mean something that will make a function that does the same thing as an operator?

Step Hen

@HyperNeutrino no

Mr. Xcoder

@HyperNeutrino Like function(5)(1)

For example:

Step Hen

@Mr.Xcoder that's currying?

HyperNeutrino

18:31

yeah I don't think that's closure, that's currying

Mr. Xcoder

@StepHen Not talking about js specifically

Step Hen

that's not what closures are though

Mr. Xcoder

@HyperNeutrino Let me write an example

Step Hen

I don't think

HyperNeutrino

I have a thing that takes an operator and makes a function from it

(+)(1, 2) is equivalent to 1 + 2

Business Cat

18:32

Example

HyperNeutrino

1 & (+) is equivalent to (1).__add__

(+)(1, 2) is equivalent to 1 + 2

Oh yeah I essentially have those

Business Cat

There's more you can do with them than what I just did though

HyperNeutrino

I'd just do (3 & (+))(2)

ppperry

0

A: One OEIS after another

98. Befunge-98 (PyFunge), 153 bytes, A001772 &v >1 >1+:00g\%kvv>1\>1-\2*\:kvv # vw\-1g00: < >$v ^ < $ >0p^ >$01g1-:01v> #> > 1+vv-1*b< ^>1+01p ^ ^: <>0 >p k^.@zz Try it online! The two zs after the @ are nop's that never get executed but I added in the make...

HyperNeutrino

yay

ppperry

18:32

posted the next answer

I chose to undelete my previous deleted answer for this number

because it used a similar program

Mr. Xcoder

function starting(value):
 function add(value2):
  return value+value2
 return add

var closure = starting(value: 3) // This is a closure

ppperry

(it wasn't that hard to convert code from ><> to Befunge)

Mr. Xcoder

@HyperNeutrino ^^

Business Cat

Another example

HyperNeutrino

so essentially currying?

Step Hen

18:34

cQuents for this next one: =0,1$0:nz+(n-2)^y

Mr. Xcoder

@HyperNeutrino Now you can call the closure with closure(value2: 4) // 7. Essentially like this: starting(value:3)(value2:4). Exactly like currying.

HyperNeutrino

well once I have functions I can just do that the way you did it

Step Hen

This is what closures mean in JS: Try it online!

at least practically

Mr. Xcoder

@HyperNeutrino Do you have structs?

Business Cat

The main idea to closures is that the function constructed inside is always in the scope of its parent function, even after that function is gone from the stack

HyperNeutrino

18:35

I don't really even know what structs are

Step Hen

@HyperNeutrino classes with no methods? I think

Business Cat

structs are just worse classes

HyperNeutrino

@BusinessCat Ah okay. I'll make functions and see if that ends up working

@BusinessCat well then I won't need them :P

Mr. Xcoder

@HyperNeutrino Nevermind, too similar to classes, but they don't have the capability to hold methods.

Step Hen

@HyperNeutrino and at least in JS, local vars inside the parent function are still in scope when the child function is called

Mr. Xcoder

18:36

@HyperNeutrino enumerations? (Let me give you an example again)

    class Person{
        init(name:String,personType:PersonType)
    }

     enumeration PersonType{

     case Worker
     case Teacher
     case Driver
     case Programmer

    }

    let Alexander = Person(name: "Alex", personType: Person.Programmer)

Step Hen

@Mr.Xcoder that's basically a struct though

which is basically a class

Mr. Xcoder

@StepHen Nooo

It's not

Step Hen

oh wait I see

Mr. Xcoder

I don't know how things are called in JS...

Step Hen

JS doesn't have them, but I understand what's going on

it's like a Python dict, but you get instances from inside or something like that

Business Cat

18:39

I've never totally understood enums

Mr. Xcoder

@HyperNeutrino @BusinessCat ^^^^^^^ (edited)

HyperNeutrino

Oh enums. I know those (Java)

Step Hen

so it's like a set of options to chose from

Mr. Xcoder

@HyperNeutrino Do you have those?

@StepHen yeah

Step Hen

that are named separately and that have a name for the group too

Business Cat

18:40

Basically it's a type that limits the possible values

Mr. Xcoder

@StepHen yes, PersonType in this case.

@BusinessCat True

HyperNeutrino

@Mr.Xcoder nope. I might add them sometime

Mr. Xcoder

@HyperNeutrino Also, do you have switch(){} statements?

HyperNeutrino

hm. no I don't

Mr. Xcoder

Maybe add those too

Step Hen

18:42

@Mr.Xcoder switches are basically if/else if/elses

HyperNeutrino

I forgot about those cuz Python doesn't have those :P But sure, I might add those sometime

Mr. Xcoder

Trying to find more things

Step Hen

anonymous funcs

HyperNeutrino

those will come with functions

Mr. Xcoder

@StepHen Yes, but are more appropriate in ~~some~~ many cases

Step Hen

18:43

@Mr.Xcoder not really, the need for break; usually makes ifs better

HyperNeutrino

unless you want fallthroughs

Mr. Xcoder

@StepHen Yes ^

Step Hen

@HyperNeutrino then you just do an if with a condition

HyperNeutrino

true

also loops don't have break or continue yet; I should add those

Step Hen

and it's shorter and makes more sense

at least most switches, because their cases don't have conditions

MD XF

18:44

I've changed my mind, I like Shog9

Mr. Xcoder

switch-case actually turn to assembly if-statements in all the programming languages I know

HyperNeutrino

Another thing I added is 1 and 2 in [1, 2, 3] is equivalent to 1 in [1, 2, 3] and 2 in [1, 2, 3]; I think that might turn out to be useful

Mr. Xcoder

@HyperNeutrino Do you have multiple assignment?

HyperNeutrino

like a, b = 1, 2?

Mr. Xcoder

@HyperNeutrino Yeah, or a = b = 1

HyperNeutrino

18:45

or a = b = 1?

I have both.

Mr. Xcoder

Ninja'd

HyperNeutrino

ಠ_ಠ

Mr. Xcoder

Good

HyperNeutrino

well (a = 1) returns the value

Mr. Xcoder

@HyperNeutrino Oh, do you have map/filter/reduce?

Step Hen

18:46

@HyperNeutrino wait, can I do if (a=True):?

HyperNeutrino

@Mr.Xcoder If it's in dir(builtins) then I have it

@StepHen yes (but it's if a = 1 {})

Mr. Xcoder

>_>

HyperNeutrino

it's like python with braces

Step Hen

@HyperNeutrino sweet

Mr. Xcoder

Is it on tio?

It is

HyperNeutrino

18:47

tio.run/#proton

Mr. Xcoder

Nice

Step Hen

@HyperNeutrino I thought python was supposed to be better C langs without braces

Mr. Xcoder

@HyperNeutrino How should one take input?

HyperNeutrino

well proton is worse better C langs without braces with braces

@Mr.Xcoder input()

Mr. Xcoder

@StepHen See my profile pic

Wow

Step Hen

18:47

@Mr.Xcoder it's basically python

HyperNeutrino

1 min ago, by HyperNeutrino

@Mr.Xcoder If it's in dir(builtins) then I have it

Mr. Xcoder

BYE

(gotta Cthulhu)

DJMcMayhem

Cumulative sum in brain-flak

HyperNeutrino

brain-flak code always seems shorter than I would imagine considering it's a tarpit with only 8 commands. :P

DanTheMan

My first MATL answer!

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