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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<oprypin> the function is expensive

<Papierkorb> what, the comparison?

<Papierkorb> You only need one additional comparison over a bsearch

<oprypin> no, the function. you're saying compare the values around it which assumes recomputing or storing them

<Papierkorb> You said bsearch, thus I assumed you have all data, or at least, enough

<oprypin> Papierkorb, i have all inputs (0..size) and can compute outputs

<oprypin> i think i have a better idea. ignore the output of bsearch, and find the optimum manually, only relying on bsearch to limit the number of calls

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<oprypin> yep

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<oprypin> solution https://carc.in/#/r/2iqs cc Papierkorb

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<oprypin> can be done without the storage but boy is it ugly

<oprypin> https://carc.in/#/r/2iqv yep totally ugly

<Papierkorb> and much more space efficient

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<oprypin> i actually cant deal with this ugly solution, don't care ¯_(ツ)_/

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<bmcginty> Is there a way to get a list of any objects crystal creates, as well as a list of the objects it deletes before they are deleted? I'm trying to track down a memory leak, and it'd be way easier if I could see which objects where hanging around between gc.collect calls.

Nick Franken

@fridgerator

@sdogruyol when will the results form the survey be available?

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* byteflame sent a long message: byteflame_2017-08-13_05:43:20.txt https://matrix.org/_matrix/media/v1/download/matrix.org/zsewrBvfTfvouCpNDBYiuwaa

<byteflame> Whoops, the first line in request should be req = HTTP::Request.new method, path, headers, body

Hanyuan Li

@hanyuone

I'm thinking of making a YAML-based GUI library as a binding for CrSFML, is this a good idea?

So you write YAML and stuff for making your GUI, instead of loads of function calls

I'm not sure if this would be a good idea, but eh

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<watzon> Querp-Derp: This is probably the one and only instance where I would suggest using XML, but something like that is definitely needed. No one wants to code all of that sh** by hand

<watzon> Qwerp-Derp *

<watzon> Wtf phone

<watzon> I give up

Hanyuan Li

@hanyuone

RenderWindow:
  name: window
  dimensions: [800, 600]
  items:
    RectangleShape:
      name: square
      dimensions: [100, 100]
      position: [100, 100]

Maybe something like this?

I can't really think of good syntax

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<watzon> I guess something like that could work out. Either way, as long as I don’t have to write actual code to make a button. I mean come on

Hanyuan Li

@hanyuone

My plan is you write a Button class with all of the commands and stuff in it

And then you write how it's going to be laid out using something like YAML

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<watzon> Rust actually has a plethora of GUI API wrappers, but I don’t think I’ve seen one yet that allows the use of XML or anything else to abstract away the actual design portion

Hanyuan Li

@hanyuone

I can't really think of a good syntax though

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<watzon> Take a look at android layouts and just translate the xml to yaml https://developer.android.com/guide/topics/ui/declaring-layout.html

<watzon> That should at least give you a starting point

<watzon> I still think XML might be better fitted to this use case though, I’m not sure if YAML is flexible enough

Hanyuan Li

@hanyuone

Hmmmmm

I wanted to reflect the whitespace-sensitive syntax of Crystal and Ruby, XML seems less user-friendly

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<watzon> You could alway write your own DSL or parser

<watzon> Might be a little more work, but it could be a fun project

<watzon> Not saying YAML won’t work of course, but I don’t know how well a UI in YAML will do

Hanyuan Li

@hanyuone

Can't I just use Crystal's YAML parser?

I wish there was a PEG parser in Crystal... :(

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<watzon> Either way good luck. Should be a fun project

Hanyuan Li

@hanyuone

:) It's a stepping stone to a bigger project

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<watzon> What GUI framework are you going to be generating code for though? Crystal is lacking in those right now

Hanyuan Li

@hanyuone

Probably CrSFML

It's not suited for GUIs, but it's the most developed library out there

For putting stuff on a screen :P and game dev

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<watzon> Yeah we could use some others for sure

<watzon> It’s just a lot of work

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