ChanServ changed the topic of #crystal-lang to: The Crystal programming language | | Fund Crystal's development: | GH: | Docs: | Gitter:
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<FromGitter> ... mapping.
<FromGitter> <aaaScript> Would anyone happen to know the best way to add a new key/value to a JSON::Any object? I took a look at the api but did not see a `#[]=` method. ⏎ ⏎ I also have not add much success with using `as_h` so I'm thinking about either making some sort of struct instead which would be neater, however, my JSON string is pretty complex and I would prefer to just to easily add in a new key too avoid any strict
<FromGitter> <Blacksmoke16> if the structure is known ahead of time i'd look into
<FromGitter> <Blacksmoke16> otherwise you can do like
<FromGitter> <aaaScript> Yeah I've used Serializable before in the past but for complicated structures (that have variants) it's a bit difficult. Though I think it will be neater to work with if I do get it right.
<FromGitter> <aaaScript> Taking a look at your example: ⏎ ⏎ ```json.as_h["name"] = "Fred"``` ⏎ ⏎ This is exactly what I was trying to do but didn't occur to me to use ``. []
<FromGitter> <aaaScript> I think that should work nicely. Thanks.
<FromGitter> <darkstego> Maybe there should be a #[]= method that implements that
<FromGitter> <Blacksmoke16> 👍
<FromGitter> <Blacksmoke16> mm not sure this is common enough to warrant but :shrug:
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<FromGitter> <> Has there been an attempt to run big Ruby libraries like ActiveRecord on Crystal as-is? This could be a step towards easy porting of Rails apps to Crystal.
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<FromGitter> <Blacksmoke16> Doesn't work like that
<FromGitter> <Blacksmoke16> Crystal isn't just compiled ruby. They are separate languages so changes are most likely going to be needed
<FromGitter> <> I understand. I have an open-source hobby app written in Rails that I'm thinking about migrating to Crystal. Tools like this would make the migration easier.
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<FromGitter> <Dan-Do> Is there any shard which convert html code `<strong>text</strong>` to markdown code `**text**`?
<FromGitter> <Dan-Do> Just search on github, there is `system reverse_markdown` function on ruby
<FromGitter> <paulocoghi> @Dan-Do , you can use the Markdown-Panda C library on Crystal, which provides HTML to Markdown and vice-versa
<FromGitter> <Blacksmoke16> yea i wouldnt bank on them existing
<FromGitter> <Blacksmoke16> but more so consider it a port to another lang. Keeping the same syntax is nice, but might also be worth rethinking the architecture of the app to make better use of crystal features
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<FromGitter> <Dan-Do> I got error `WARNING: Unsupported BIO ctrl call (76)`
<FromGitter> <Dan-Do> There is something related to openssl, don't how to fix :(
<FromGitter> <Dan-Do> Kyostya's json benchmark is now famous :)
<FromGitter> <Dan-Do> @kostya congrat
<FromGitter> <eliasjpr> Project Update - Authority OAuth 2.0 Server for Crystal - Docs -
<FromGitter> <paulocoghi> Haha, nice :)
<FromGitter> <paulocoghi> Congratulations on the new release!
<straight-shoota> @Dan-Do You could probably employ sanitize for a markdown conversion. Just need to define a custom transform policy and adapter for text output.
<FromGitter> <eliasjpr> Thank you!
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<SamantazFox> require "json"
<SamantazFox> u = x["foo"].try & "u").try &.[0]
<SamantazFox> x = JSON.parse("{\"foo\":[\"a\", \"b\", \"c\", \"d\"]}")
<SamantazFox> why the hell do I get "out of bounds" exception
<FromGitter> <Blacksmoke16> Because it doesn't match anything so the array is empty
<SamantazFox> I know, but isn't `.try` supposed to catch that and give me `nil`?
<FromGitter> <> SamantazFox, i'm making a wild guess but does ruby return `nil` if `select` produced 0 results?
<SamantazFox> idk, I almost never coded in Ruby xD
<FromGitter> <> well anyway crystal doesnt return `nil` in that case
<FromGitter> <Blacksmoke16> `#try` doesnt yield if what you call it on is `nil`
<FromGitter> <Blacksmoke16> so in the end you're doing like `Array(String).new[0]`
<oprypin> both of your `.try` actually have no effect
<oprypin> oops wrong window D:
<FromGitter> <Blacksmoke16> ^ `#[]` raises if missing so it wouldnt actually ever be `nil`
<FromGitter> <> your code is same as `u = x["foo"] "u")[0]`
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<SamantazFox> yeah, there is a missing `?` after `x["foo"]`
<FromGitter> <> 1) x["foo"] raises or returns a non-null value ⏎ 2) always returns an array. even if it's empty doesn't matter, `try` only reacts to `nil`
<SamantazFox> how then can I select in a way that I'm ensured `nil` rather than `[]`?
<FromGitter> <Blacksmoke16> `#find` maybe?
<FromGitter> <Blacksmoke16> assuming you only care about the first match
<FromGitter> <> `u = x["foo"].as_a.find(&.as_s.== "u")`
<SamantazFox> wonderful :D
<SamantazFox> thanks y'all :)
<SamantazFox> Also, quick other question: is there a reason why `.dig?` doesn't work on `nil`s?
<FromGitter> <Blacksmoke16> kinda related i had the idea of adding `#presence` to Array (or maybe one of the modules) that also check `#empty?` and not `nil`
<FromGitter> <Blacksmoke16> probably the same reason `#+` doesn't
<FromGitter> <Blacksmoke16> or any other method
<SamantazFox> I mean, `my_json.dig?("foo", "bar")` works, but why `my_json.dig?("foo").dig?("bar")` wouldn't?
<FromGitter> <Blacksmoke16> because how would it work if the first dig returns `nil`? this is a case where `#try` comes into play
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<FromGitter> <Blacksmoke16> `my_json.dig?("foo").try &.dig?("bar")`
<SamantazFox> I really hate having `.try` every single time I access sub-elements...
<FromGitter> <> SamantazFox, `dig` is a method only on the `JSON::Any` type. the `Nil` type doesn't have such a method
<FromGitter> <Blacksmoke16> `JSON::Any` is a pita if you haven't noticed, surprised to see you havent gave up on it and moved to serializable or something yet
<FromGitter> <Blacksmoke16> assuming your data is structured and known ahead of time
<FromGitter> <> SamantazFox, right-- JSON+Crystal is tailored towards using
<SamantazFox> We have no other choice xD
<FromGitter> <Blacksmoke16> how so?
<SamantazFox> Youtube gives huge JSON files.
<FromGitter> <Blacksmoke16> so?
<SamantazFox> they evolve all the time
<FromGitter> <Blacksmoke16> fair, if the structure is fluid then not much you can do in that regard i guess then :/
<FromGitter> <> SamantazFox, you dont literally have to use `try`... ⏎ there's also this option ⏎ ⏎ ```if (u = x["foo"]?) ⏎ u.as_a.find(&.as_s.== "u") ⏎ end``` []
<FromGitter> <> also... `my_json.dig?("foo").try &.dig?("bar")` - that's better written as what I'm pretty sure is equivalent: `my_json.dig?("foo", "bar")`
<FromGitter> <Blacksmoke16> ^
<SamantazFox> oprypin: yeah, I alternate, but when you have stuff like that, well, that's not that easy
<SamantazFox> (I can't even paste the file in a pastebin, it's too large xD)
<SamantazFox> Just to give you an idea, here's 2% of it, as bpaste doesn't accept more that 256kB
<FromGitter> <Blacksmoke16> couldnt you have some sort of transformation layer that handles the brunt of that, while still allowing you to work with objects
<SamantazFox> What do you mean?
<FromGitter> <Blacksmoke16> i.e. consume input JSON and output standardized objects. I imagine the end data is stable/common and will just need to keep the input transformation logic up to date which i imagine would be a lot easier than using `JSON::Any` throughout the codebase
<SamantazFox> Oh, yeah, that's what we do, mostly
<FromGitter> <Blacksmoke16> gotcha
<SamantazFox> like, 80% of it is just dumped after we got the reply, parsed it, and extracted the data we needed.
<SamantazFox> but the major problem is at "getting the data we need"
<FromGitter> <Blacksmoke16> cons of working with a private API i suppose :P
<SamantazFox> yeah xD
<SamantazFox> but sadly, this is what it needs to provide a better platform to watch youtube videos, while excaping the grabby hands of big G