crystal-lang/crystal

The Crystal programming language | http://crystal-lang.org | Fund Crystal's development: http://is.gd/X7PRtI | Docs: http://crystal-lang.org/docs/ | API: http://crystal-lang.org/api/

George Dietrich

@Blacksmoke16

skynet is real

moe

@moe:busyloop.net

[m]

but i'm not on ubuntu, i'm on windows!
If you are using Windows, you will not be able to use the pre-built Crystal package as it is only available for Linux-based systems. In order to use Crystal on Windows, you will need to build it from source by following the instructions on the Crystal website. Alternatively, you can try using a different package manager or pre-built package that is available for Windows. You can also try using a virtual machine or dual-booting to install a Linux-based operating system and use the pre-built Crystal package on that system.

ok i'll stop spamming now. but this thing is crazy 🤯

Beta Ziliani

@beta-ziliani

time for a core team member bot

j8r

@jrei:matrix.org

[m]

beta bot 😄

phil294

@phil294:matrix.org

[m]

Hi! Is it possible to debug binaries with MT enabled? I'm trying to GDB into errors which I presume are caused by GC + GTK + MT, but running with gdb always fails. Current error message is SIGPWR, Power fail/restart, but I think I'have had others too. I am just generally wondering if it's possible to debug multithreading applications.

j8r

@jrei:matrix.org

[m]

Tried with Valgrind?

phil294

@phil294:matrix.org

[m]

no, though I barely even know what it is, I'll test that later. Thanks

From IRC (bridge bot)

@FromIRC

<yxhuvud> sigpwr seems to happen on power failure. I hadn't seen that one before.

azurelmao

@azurelmao

What am I defining the initial capacity for if I can't use it like this?
https://carc.in/#/r/e78e

George Dietrich

@Blacksmoke16

it allocates memory such that it could fit 100 Int32 values

azurelmao

@azurelmao

So in order to skip past indexes I first have to fill the array with some value?

George Dietrich

@Blacksmoke16

there's another overload that allows you to initialize each index to some value if you want

azurelmao

@azurelmao

Yeah ik, I had just hoped there would be a more convienent way to do it

George Dietrich

@Blacksmoke16

more convenient how?

or backing up, what end result are you wanting?

azurelmao

@azurelmao

It's just that I have a class which adds itself to a class var on init

def initialize(@id)
    if id > 0
      @@item_list.insert(@id, self)
    end
  end

so now I have to check whether the id is 0

in order to fill the array

George Dietrich

@Blacksmoke16

are they instantiated in order? i.e. is it possible the first instance has an @id of 10 and the next 1 or is it always going to go in order?

0, 1, 3, ...

0, 1, 2, ...*

azurelmao

@azurelmao

they won't be in order

George Dietrich

@Blacksmoke16

Hash(Int32, self).new then?

azurelmao

@azurelmao

Oh, I haven't thought of that

I'll try it

George Dietrich

@Blacksmoke16

seems like a more reasonable data model if you just want to store objects with a numerical key

azurelmao

@azurelmao

btw, this is unrelated to my previous question I'm just curious, but is there a literal for object instantiation? Something like:

foo = Foo{id: 1}

Which would bypass the initialize method and let you assign the properties by hand

George Dietrich

@Blacksmoke16

azurelmao

@azurelmao

I see

George Dietrich

@Blacksmoke16

unless you make everything nilable and do something like:

foo = Foo.new
foo.id = 1
...

but ofc, having a proper constructor is usually the better way

i.e. Foo.new 1 or Foo.new id: 1

azurelmao

@azurelmao

I usually avoid Nilable types, because of the trouble they cause

Anyways, thank you for helping me!

George Dietrich

@Blacksmoke16

actually, not exactly what you want, but you could look into https://crystal-lang.org/reference/1.6/syntax_and_semantics/literals/hash.html#hash-like-type-literal

From IRC (bridge bot)

@FromIRC

<SamantazFox> For anyone interested: I've been doing my Advent of Code in Crystal this year ^^ https://github.com/SamantazFox/AoC-2022

From IRC (bridge bot)

@FromIRC

<riza> SamantazFox: there are a bunch of us, the Discord server has an aoc channel. But I'm over here at github.com/robacarp/advent_of_code/

<riza> a couple more links from the discord https://github.com/hovsater/aoc-crystal

<riza> https://git.sr.ht/~refi64/AoC-2022

<riza> https://github.com/Daegalus/adventofcode22

<riza> there are probably many others

<riza> oh we have a leaderboard too....uuuummm

<riza> https://adventofcode.com/2022/leaderboard/private/view/659296

re:fi.64 🏳️‍🌈

@refi64:linuxcafe.chat

[m]

Note that mine is not actually in Crystal 😅

From IRC (bridge bot)

@FromIRC

<riza> oh whoops

<riza> i like that they're on sr.ht

<riza> i keep meaning to set up a gittea or something but ...

re:fi.64 🏳️‍🌈

@refi64:linuxcafe.chat

[m]

sr.ht is definitely pretty nice

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