<FromGitter>
<asterite> Blacksmoke16 you can use <=>. If they are not comparable you get nil
<oprypin>
asterite, no, i think you get an exception? try `5 <=> "a"`
<oprypin>
sorry, i mean comppilation error
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<FromGitter>
<sam0x17> so I was about to ask why crystal doesn't have generic methods but I think I realized why when I went to write the syntax -- the only thing that would make sense would be essentially the java/C++ template syntax which would look very uncrystal: ⏎ ⏎ ```def my_generic_method<T, U>(arg1, arg2) ⏎ ⏎ end``` [https://gitter.im/crystal-lang/crystal?at=5e7d4ea39efda609e29df83f]
<FromGitter>
<sam0x17> still, I'd use it if it were a thing, I often end up defining a one-method-module just to house a generic method
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<FromGitter>
<Blacksmoke16> yea exactly, so im kinda out of luck
<FromGitter>
<Blacksmoke16> @asterite should i make an issue about that `<=>` issue?
<FromGitter>
<sam0x17> yeah but more intended for one line usage like `RaisesError(MyException) .value? { 448 / 0 }`
<FromGitter>
<Blacksmoke16> hmm yea, i cant think of any other way to do it
<FromGitter>
<sam0x17> I seem to generate things like that semi-frequently though
<FromGitter>
<Blacksmoke16> i cant say i ever had the need :p
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<FromGitter>
<ImAHopelessDev_gitlab> Isn't the term "greater than" used in mathematics / numbers? How does it work in the context of structs?
<FromGitter>
<ImAHopelessDev_gitlab> size of a object?
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<FromGitter>
<sam0x17> well crystal allows operator overloading so it could be defined to mean anything for a particular struct
<FromGitter>
<sam0x17> but usually this would happen if you want your struct/class to be sortable -- you define a custom <=> operator and I *think* that also gives you > and < out of the box
<FromGitter>
<sam0x17> as well as ==, etc
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<FromGitter>
<asterite> Sam you can do: de raises_error?(t : T.class) forall T
<FromGitter>
<asterite> then you pass the class as just another argument
<FromGitter>
<asterite> That's why we don't have generic methods, because you can already pass classes around and capture their type generically, which actually ends up creating multiple methods, just like generics in other languages
<FromGitter>
<asterite> Blacksmoke16 oh, I though <=> was already defined for Object. I'll add it today
<FromGitter>
<stronny> do you even need forall here?
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<FromGitter>
<phykos> How can I get the highest number my machine can represent with an `Int`?
<FromGitter>
<ImAHopelessDev_gitlab> i just don't understand how a struct can be greater than another struct. what determines it to be "greater" the size of it? amount of ivars and types it uses?
<FromGitter>
<dscottboggs_gitlab> @phykos `Int` is not a type in crystal
<FromGitter>
<dscottboggs_gitlab> @ImAHopelessDev_gitlab it's up to the programmer how they choose to implement the `>` method
<FromGitter>
<ImAHopelessDev_gitlab> in c, i know there is sizeof, but is that what we're talking about here or something totally different
<FromGitter>
<dscottboggs_gitlab> @phykos if you mean to figure out whether you should use an `Int32` or `Int64` on a given system, you could do like ⏎ ⏎ ```alias SystemInt = {% if flag? :bits32 %} Int32 {% else %} Int64 {% end %}``` [https://gitter.im/crystal-lang/crystal?at=5e7de98550e7e56b4b96533c]
<FromGitter>
<phykos> Forgot about that
<FromGitter>
<phykos> s/Int/Integer
<FromGitter>
<phykos> @dscottboggs_gitlab what are those `{%%}`?
<FromGitter>
<dscottboggs_gitlab> yes, but much more powerful and a bit more safe
<FromGitter>
<phykos> Lemme check
<FromGitter>
<phykos> K
<FromGitter>
<dscottboggs_gitlab> but yes, this basically translates to some `#ifdefs`
<FromGitter>
<toddsundsted> @stronny without `forall` there doesn't seem to be any way to rescue exceptions of the passed type (`rescue e : T`). `typeof` doesn't seem to work here (`rescue e : typeof(t)`)
<FromGitter>
<phykos> Ok
<FromGitter>
<phykos> I know Ruby way too much, tho I don't use Crystal since a coupe of months
<FromGitter>
<stronny> yeah, basically to get rid of boilerplate `self; end`
<FromGitter>
<Blacksmoke16> well in this case i would prob still want the return type to be the interface but yea
<FromGitter>
<Blacksmoke16> similar to how `: Nil` makes it return nil
<FromGitter>
<stronny> yep
<FromGitter>
<toddsundsted> @stronny i seems like a bug. the compiler should have access to the type of `t` there and `typeof(...)` can be used to declare the type of a variable elsewhere
<FromGitter>
<lbarasti> Hey folks, any pointer to statistical shards? There is one mentioned in the awesome crystal repo, but the link is dead
<FromGitter>
<Blacksmoke16> which one is that/
<FromGitter>
<lbarasti> I'm looking for features like generating random numbers on well-known distributions
<Welog>
hello. when i do multiple puts in a spawn, with a sleep, I get the putted text by groups of 41 lines and nothing until this "buffer" get this number of lines. Do you know how is it possible to avoid that to get every puts in realtime ?
<FromGitter>
<Blacksmoke16> STDOUT.sync = true
<FromGitter>
<Blacksmoke16> Won't buffer output
<Welog>
oh thanks Blacksmoke16!
<FromGitter>
<Blacksmoke16> Also next crystal version will flush on newlines by default on ttys
<FromGitter>
<Blacksmoke16> So shouldn't need it then
<Welog>
ok, good to know. I only do that for debug purpose, but who know :)
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<FromGitter>
<asterite> I think sync is true right now for TTY. It's for files that's not the case. Welog: do you see this behavior in the console, or when outputting to a file?
<watzon>
Is it? I'm wondering if it might be having a hard time detecting a tty inside of a container then.
<watzon>
Because I'm using nsbox right now to run my development environment in a container, and if I don't set sync to true I don't get any output.
<FromGitter>
<asterite> ah, yes, that can be the causee
<FromGitter>
<Blacksmoke16> @watzon using docker you prob have to use `-i` flag
<FromGitter>
<Blacksmoke16> er `-t`
<FromGitter>
<Blacksmoke16> ` -t, --tty Allocate a pseudo-TTY`
<FromGitter>
<Blacksmoke16> might have to do something similar
<watzon>
Not docker in this case, but podman is being used in the background I believe