#crystal-lang on 2016-08-31 — irc logs at freenode.irclog.whitequark.org

2016-07-04 09:10 jhass changed the topic of #crystal-lang to: The Crystal programming language | http://crystal-lang.org | Crystal 0.18.7 | Fund Crystals development: http://is.gd/X7PRtI | Paste > 3 lines of text to https://gist.github.com | GH: https://github.com/crystal-lang/crystal | Docs: http://crystal-lang.org/docs/ | API: http://crystal-lang.org/api/ | Logs: http://irclog.whitequark.org/crystal-lang

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07:37 <BlaXpirit> ttdonovan, it's interesting. crystal has methods to convert integers of particular size like this, but probably not for BigInt. so your code might actually be the most concise possible

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08:02 <crystal-gh> [crystal] olbat opened pull request #3218: Fix: Int32 overflow when using File.read on big files #3209 (master...fix_file_read_int32_overflow) https://git.io/viUAw

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12:31 <RX14> BlaXpirit, i disagree with you on string size. I think that 4gb is a good size limit and it should stay

12:32 <RX14> doubling the header size to allow people to misuse strings seems like a bad idea to me

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18:12 <noblehelm> crystal lang has any shard for image processing?

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18:19 <jhass> http://crystalshards.xyz/?filter=image

18:20 <jhass> depending on what you want, shelling out to imagemagick might be easiest

18:20 <RX14> yes

18:20 <RX14> you want imagemagick bindings probably

18:20 <RX14> which don't seem to exist as a shard

18:22 <noblehelm> i want to load it to a matrix and be able to perform processing on it and output an image thereafter

18:24 <noblehelm> like interpolation, gaussian filters and {low,high}-pass

18:25 <RX14> sounds like something imagemagic should be able to do

18:26 <RX14> if it can't apply said filters to the matrix, it will be able to output raw RGB to handle yourself

18:29 <noblehelm> i'm currently undergoing a image processing course, so that's why

18:30 <noblehelm> asked my teacher if i could do in something like python, she refused because she said python already have too many things to facilitate

18:30 <RX14> well then

18:30 <RX14> using imagemagic is cheating

18:30 <RX14> it does everything for you

18:31 <jhass> you're probably not supposed to use any library then

18:31 <jhass> what's your input data?

18:31 <noblehelm> any image

18:31 <RX14> you might want a png decoder or the likes though

18:31 <noblehelm> any format

18:31 <RX14> which seem to exist

18:31 <RX14> https://github.com/l3kn/stumpy_png

18:32 <RX14> this looks good

18:32 <RX14> it takes pngs and returns a "canvas" which is the raw rgba grid

18:33 <RX14> probably should use [] and []= instead of get_pixel and set_pixel though

18:35 <noblehelm> dang, a real png decoder

18:35 <noblehelm> i wonder if someone did one for jpeg

18:36 <noblehelm> thank you

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18:46 <RX14> stumpy_png is a bit rough round the edges

18:46 <RX14> like having a crop_y bot not a crop_x

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18:54 <noblehelm> funny thing, i did a computer graphics course before and the teacher was a stupid dude who insisted that a CG course must have an entire topic on JPEG decoder

18:55 <noblehelm> he did set aside 2D and 3D to teach Fourier analysis and JPEG

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19:35 <RX14> looks like asterite might be back

19:51 <BlaXpirit> :)

19:51 <Papierkorb> yay

19:55 <RX14> i wouldn't like to look at his github notifications lol

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21:18 <noblehelm> quit

21:18 <noblehelm> crap

21:18 <noblehelm> missed the backlash

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21:18 <RX14> i do it all the time lol

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