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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/

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13:24

straight-shoota closed #13014
02:34

Blacksmoke16 labeled #13023
02:19

cyangle labeled #13023
02:19

cyangle opened #13023
00:41

devnote-dev labeled #13022
00:41

devnote-dev opened #13022
Jan 27 23:05

straight-shoota labeled #13021
Jan 27 23:05

straight-shoota labeled #13021
Jan 27 23:05

straight-shoota labeled #13021
Jan 27 23:05

straight-shoota labeled #13021
Jan 27 23:05

straight-shoota opened #13021
Jan 27 22:40

straight-shoota labeled #13020
Jan 27 22:40

straight-shoota labeled #13020
Jan 27 22:40

straight-shoota labeled #13020
Jan 27 22:40

straight-shoota opened #13020
Jan 27 21:18

stefandd edited #13018
Jan 27 20:46

etra0 review_requested #13006
Jan 27 18:30

Blacksmoke16 closed #13007
Jan 27 18:30

Blacksmoke16 closed #13019
Jan 27 18:21

wyhaines closed #13019

John Jansen

@johnjansen

i think it was the standard “were thinking about it” line on the GC front, @sdogruyol may remember or @elorest, they have better memories than me

Chris Watson

@watzon

Wishing I was there :laughing:

Garance A Drosehn

@drosehn

@DougEverly thanks for the pointer to your daemonize.cr. I'm not currently looking to write any daemons in crystal, but that's something that I'm likely to do. My comments were in response to questions brought up earlier by @watzon . What you have is a good start, and I think having that function available as a shard is better than individual programmers trying to figure it out.

Chris Watson

@watzon

Anyone know how to take a C macro like this #define LINUX_VERSION(x,y,z) (0x10000*(x) + 0x100*(y) + z) and Crystalize it?

Isaac Sloan

@elorest

@johnjansen My recollection was we’d like to develop some sort of full crystal replacement similar to what go ended up using. It’s not really at the top of the priority list right now though.

Matias Garcia Isaia

@mgarciaisaia

@watzon why not a regular function? That's just making a number from three different others, right?

Chris Watson

@watzon

Yeah I just thought of that

I'm tired and overthinking things lol

Jason Waldrip

@jwaldrip

@watzon would you prefer that as part of the build though?

You can do that with macro syntax pretty easily, i typically have a runner that evals the shard.yml and inserts the version

Chris Watson

@watzon

@jwaldrip yeah I just added it as a method. That works fine :)

Just got my second shard up on GitHub! Still have a bit of work ahead of me, but I have the bindings to procps-ng https://github.com/watzon/crystal-procps

John Jansen

@johnjansen

@elorest that was my vague recollection too …

Jason Waldrip

@jwaldrip

@elorest @johnjansen GC's are not easy... well, not true, gc's are trivial, mallocs are the real pain.

Isaac Sloan

@elorest

yep.

Jason Waldrip

@jwaldrip

Could just comb though bohem and convert it to crystal

Chris Watson

@watzon

Better yet, let's just write a C->Crystal transpiler to do the heavy lifting

Then make all the things Crystal libs

:grin:

Jason Waldrip

@jwaldrip

:-)

sevk

@sevk

:smile:

sevk

@sevk

C->Crystal transpiler +1 , keep all things simple :+1:

Ghost

@ghost~55586c4815522ed4b3e08557

Good luck with that :smile:

Andrea Peruffo

@andreaTP

One question, in a spec I wanna check the output sent to STDOUT but it looks like I cannot mock it, how to do it?

chuanshuo

@lilijreey

@faustinoaq yes Crstal just a front-end, can by run anywehere. like Kotiln

@huacnlee 居然看见了一个熟悉的头像

From IRC (bridge bot)

@FromIRC

<w-p> is it not possible to initialize a class property with setter function from inside the initialize call?

<w-p> for example: https://play.crystal-lang.org/#/r/2hm0

Ghost

@ghost~55586c4815522ed4b3e08557

w-p no you need to explicitly initialize each instance variables in the initializer, not in other functions.

note that when you do @bar = something the setter is not called

From IRC (bridge bot)

@FromIRC

<w-p> so, I can't force the setter to be called during initialization?

<RX14> w-p, i think you misunderstand what a setter is

<RX14> @bar = bar isn't calling bar= and never will

<RX14> because you're setting the instance variable directory

<RX14> not calling the setter

<RX14> directly*

<w-p> https://play.crystal-lang.org/#/r/2hm3

<RX14> indeed

<w-p> self.bar works but still, only if it the associated variables are initialized

<RX14> yes

<w-p> so, defaults can't be calculated.

<RX14> they can be calculated in the initialize function or in "top-level defaults"

<w-p> but not via setters

<RX14> no, it doesn't analyse called functions for whether ivars are set

From IRC (bridge bot)

@FromIRC

<RX14> you must initialise all instance variables before you call the first function in your constructor

Ghost

@ghost~55586c4815522ed4b3e08557

RX14 wut it works, I thought one couldn't init variables in other methods from the initializer Oo

From IRC (bridge bot)

@FromIRC

<RX14> you can't

<w-p> alright. that's fine. now I know. thanks.

Ghost

@ghost~55586c4815522ed4b3e08557

oh no i miss-read the example

From IRC (bridge bot)

@FromIRC

<RX14> w-p, the problem is that i think there are certain conditions where if you allow what you want to do, you can break the type system

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