The Nineteenth Byte - 2016-04-02 (page 7 of 7)

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10:00 PM

@AlexA. Why 4 slots specifically?

One for him, 3 for his ego

jk

Oh jeez

dam son

@Sherlock9 Because there are currently 4 very active moderators that work well together. Three seems perhaps too few (though we could get by) and 5 seems too many.

@EasterlyIrk Hydroelectric child

9

10:03 PM

hahaha

^

haha

that took me a second

Fair enough. Good luck to all the mods :D

water-holding short kid

10:04 PM

^^

Chris Jester-Young

@AlexA. Good job! I did wonder how PPCG achieved 4 slots. Now I know!

@ChrisJester-Young Haha thanks. It's not like it was a difficult endeavor or anything. :P

Chris Jester-Young

:-P

@Sherlock9 not all dams are power generating!! (buzz kill, I know)

@Sherlock9 Thanks! :D

10:08 PM

trrr trrr

@Optimizer If you have another dam-related adjective, I'd be happy to use it

sunny

@Sherlock9 High Potential Child

It has potential, but I'm not that that pun has quite the same energy as "Hydroelectric child" :P

By the way, do we have a challenge based on this function? oeis.org/A003415

If not, I'm going to write up a question about it before I go to bed

Doesn't sound familiar. Sounds like it'd be an interesting challenge.

10:20 PM

Should I sandbox it first? It's 5 am and I could make a mistake in the specs

yes

@xnor I think you're entirely misinterpreting my challenge

my challenge is to find a en.wikipedia.org/wiki/Perfect_hash_function

not a generic hash function

Then isn't GPerf the best way to do that?

if you can fit gperf's output in 140 characters

perhaps

I don't know if it can handle this many words either

On the topic: Is there an analysis suite for generic hash functions (something like DIEHARD(ER) or TestU1, but specifically for hash output)? Random analysis tells you the quality of the underlying RNG, but what about the hash algo itself?

10:37 PM

2 hours ago, by Downgoat

is there some sort of a tool which takes in a BNF grammar and spits out a lexer?

no one?

@Downgoat catalog.compilertools.net/lexparse.html

@AlexA. too many words

Chris Jester-Young

@Downgoat What? Surely you want a parser generator + a lexer that you write by hand?

@ChrisJester-Young pls no

though I'm almost finished anyway...

I basically need to test for edge cases and I'll be done with the parser

No one is ever done testing for edge cases ;-)

10:44 PM

this is a great oppurtunity for JS bashing

JavaScript edge-case testing is so bad, they missed a huge bug which is JavaScript itself.

Chris Jester-Young

Lulz.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

The Arithmetic Derivative code-golf arithmetic sequence The derivative of a function is a cornerstone of mathematics, engineering, physics, biology, chemistry, and a large number of other sciences as well. Today we're going to be calculating something only tangentially related: the arithmetic d...

Ah, right on time

Was just about to post that my challenge was up in the Sandbox

And now, bed

Goodnight

11:03 PM

Good night!

night

Not trying to gain rep, but can I get more votes here? I just want to have more snippets.

11:23 PM

Congrats @EasterlyIrk on 1K rep!!

oh cool

brb adding

updated.

@Downgoat was that you?

If so, thx.

If not, THANKS RANDOM PERSON!!!!!

@EasterlyIrk the upvote? yes :)

\o/ YAY THANK YOU MUCH

does anyone know what the golden part in a wire does? Is it an insulator?

You're gonna have to be more specific

11:30 PM

^

^

its shiny

Are the wires wrapped inside a gold plating?

^

@ZachGates ¯\_(ツ)_/¯ Doesn't look like it

11:31 PM

@Downgoat ಠ_ಠ

@Downgoat is the wire inside?

yes

user image

Very memorable.

Huh. That actually is pretty memorable.

Though it isn't a question.

@mınxomaτ wat.

you seem to be very good at finding odd bugs in web applications

I like the "powered by The Cloud". That means literally nothing.

11:36 PM

My WiFi is powered by The Wall Outlet

how do they know you aren't visiting through an ethernet connection

user image

how should variables be stored internally?

in a giant object?

Well, some kind of hashtable.

Whatever that means in the context of your language.

I'm not sure how that would work with scoping though

I'm not big on speed but I also don't want it to be slow as shit

Python uses a stack of hashes.

11:45 PM

so does JavaScript ( ͡° ͜ʖ ͡°)

Each hash is a scope

should functions have their own scope?

or just classes

also, should super calls be: super var1, var2 or super var1 var2 or super (var1, var2) or super(var1, var2)

Ideally in most cases functions should have their own scope like classes do; but I'm sure there are exceptions

@Phrancis does python do that?

My problem with doing that is if there is something like...

Depends on who writes it. But I'm pretty sure native Python functions do, AFAIK. I don't Python very often...

11:48 PM

func a() {
    self.foo = "bar";
    func b() {
        // how do I access foo?
    }
}

how should I make foo acessable to b in a senario like this?

Ah, that's different. Not sure about that one

Are you trying to rewrite JavaScript or something?

no. What makes you think that?

Dunno, just seems very JS-like to declare a function inside another function

but you can do that in python correct?

I wouldn't know

11:55 PM

You can do it in R and Julia

At least in R, any variable local to a will be accessible by b

Nested Functions in Python

@AlexA. I'm talking about self/this variables in this case

I don't know what that is so I'll just slink back into the shadows

@Phrancis eewww books

@AlexA. like in a class:

I may be wrong but I was under the impression that self in Python referred to instance of an object, like this in Java

11:57 PM

so should functions have their own this/self?

Are your functions objects?

no

^^ your answer (IMO)

you only need 1 carrot (otherwise it points to the wrong esmsage(

user image

11:59 PM

4/10 not pointing the right way

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The Nineteenth Byte

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