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/

oprypin

@oprypin:matrix.org

[m]

frojnd, yea that would be https://crystal-lang.org/api/1.4.1/File.html#open%28filename%3APath%7CString%2Cmode%3D%22r%22%2Cperm%3DDEFAULT_CREATE_PERMISSIONS%2Cencoding%3Dnil%2Cinvalid%3Dnil%29%3Aself-class-method

IO::Memory shouldn't be involved.

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<frojnd> So I should ditch https://crystal-lang.org/api/1.4.1/IO.html#copy%28src%2Cdst%29%3AInt64-class-method "def self.copy" and rather try the https://crystal-lang.org/api/1.4.1/File.html#open%28filename%3APath%7CString%2Cmode%3D%22r%22%2Cperm%3DDEFAULT_CREATE_PERMISSIONS%2Cencoding%3Dnil%2Cinvalid%3Dnil%29%3Aself-class-method (def self.open(filename : Path | String, mode = "r", perm =

<frojnd> DEFAULT_CREATE_PERMISSIONS, encoding = nil, invalid = nil) : self) ?

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@FromIRC

<frojnd> @oprypin https://carc.in/#/r/d4op I get No such file

<frojnd> But then again maybe I don't understand how to write to file

oprypin

@oprypin:matrix.org

[m]

frojnd, maybe the directory "some_file" doesn't exist

the code is all good, also should delete this line as well io = IO::Memory.new io.gets_to_end

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@FromIRC

<frojnd> @oprypin it doesn't since it didn't extract it. Hm I have to create it by hand?

oprypin

@oprypin:matrix.org

[m]

yes

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@FromIRC

<frojnd> If I delete that io line, what should I put inside IO.copy()

<frojnd> Just IO.copy(io.gets_to_end, f)

oprypin

@oprypin:matrix.org

[m]

literally just delete that line, no other change compared to https://carc.in/#/r/d4op
that is because you already have |io|

frojnd,

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@FromIRC

<frojnd> I see

<frojnd> I have to use typeof more often in this lerning proccess

<frojnd> Thank you oprypin

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@FromIRC

<Sankalp> Hi #crystal-lang

George Dietrich

@Blacksmoke16

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@FromIRC

<Sankalp> Set{1,2,3}.map(...) returns an Array

<Sankalp> Is this expected?

George Dietrich

@Blacksmoke16

i think so

could call .to_set on it

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@FromIRC

<Sankalp> True

George Dietrich

@Blacksmoke16

https://crystal-lang.org/api/1.4.1/Enumerable.html

Note that most search and filter methods traverse an Enumerable eagerly, producing an Array as the result. For a lazy alternative refer to the Iterator and Iterable modules.

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@FromIRC

<Sankalp> Ahh.. I see.

<Sankalp> Thank you, Blacksmoke16!

Kirill Zvonov

@kzvonov

Hey guys! I've a problem installing Crystal on my M1 Pro Chip inside a docker container. To be precise (1) I have M1 Pro chip (2) I have a container with ruby powered by Debian 11 (3) I'm trying to run this script RUN curl -fsSL https://crystal-lang.org/install.sh | bash

I suppose I can compile it from the source code, but are there any guides about it?

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<Sankalp> There's a guide on how to install it on a debian system https://crystal-lang.org/install/on_debian/

Kirill Zvonov

@kzvonov

Yep, there's, but it doesn't work for Mac M1 Pro Chip when you are installing crystal in a Docker container

(1) % docker run --rm -it debian bash

(2) apt update && apt install curl

(3) curl -fsSL https://crystal-lang.org/install.sh | bash

(4) crystal -> bash: crystal: command not found

It doesn't work

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@FromIRC

<frojnd> @kzvonov what does the output say after you run curl ... command ?

<frojnd> @kzvanov also add dpkg -l |grep crystal to docker and see the output

Kirill Zvonov

@kzvonov

dpkg -l |grep crystal
ii  crystal1.2-docs                    1.2.2-1+1.103                  all          Documentation for the Crystal Programming Language
ii  crystal1.2-samples                 1.2.2-1+1.103                  all          Sample code for the Crystal Programming Language

@FromIRC frojnd thanks for helping

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@FromIRC

@kzvonov, I'm a bot, bleep, bloop. I relay messages between IRC (#crystal-lang on irc.libera.chat) and here

<frojnd> @kzvanov can you also paste the output of: curl -fsSL https://crystal-lang.org/install.sh | bash

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@FromIRC

<frojnd> Maybe because you are on arm?

Kirill Zvonov

@kzvonov

any suggestions?

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@FromIRC

<frojnd> I know there were some experimenting with arm but more on https://forum.crystal-lang.org https://forum.crystal-lang.org/t/docker-images-for-arm-rpi/1105/6?

Kirill Zvonov

@kzvonov

Thanks!

George Dietrich

@Blacksmoke16

@kzvonov checkout https://packagecloud.io/84codes/crystal

Paul M. Lambert

@plambert

Dumb, quick question: anyone know of a relatively loose date/time string parser that allows a whole lot of common patterns? Like 2022-05-02 06:07:08 and 5/2/2022 6pm and such?

Not looking for anything perfect, just to allow CLI users the chance to use whatever format they try first...

moe

@moe:busyloop.net

[m]

didn't find one when i last looked

shouldn't be too hard to port one of the ruby ones tho, if you're so inclined. e.g. https://github.com/mojombo/chronic

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