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What programming language ruby, python og javascript?
(sh.itjust.works)
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this post was submitted on 07 Jun 2024
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Programming
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Oh really? How would an IDE go-to-definition on
x.barin this code?Best it can do is heuristics and guesswork.
By using the AST? Do you really not know how languages work? I mean seriously, this is incredibly basic stuff. You don’t need to know the type to jump to the ast node location. Do you think that formatters for dynamic languages need to know the type in order to format them properly? Then why in the world would you need it to know where to jump to in a type definition!?!
Edit: also in the case of Ruby, the entire thing runs on a VM which used to be YARV but I think might have changed recently. So there’s literally bytecode providing all the information needed to run it. I highly recommend reading a book about how the Ruby internals work since you seem to think you understand but it’s quite clear you don’t, or for some reason think “jump to” is this magical thing that requires types.
I think you're getting a bit confused. How do you know where
x's type is defined and therefore wherex.baris defined if you don't know what typexis? It's literally impossible. Best you can do is global type inference but that has very big limitations and is not really feasible in a language that wasn't designed for it.Not sure if that is a serious question, but it's because formatting doesn't depend on the type of variables but going to the definition of a field obviously depends on the type that the field is in.
Maybe my example was not clear enough for you - I guess it's possible you've never experienced working intellisense, so you don't understand the feature I'm describing.
Ctrl-click on
bar. Where does it jump to?formatting does depend on the type of variables. Go look at ktfmt's codebase and come back after you've done so...
Lol, nice try with the insult there. I code in Kotlin, my intellisense works just fine. I just think you're quite ignorant and have no clue what you're actually talking about.
it gives you an option, just like if it was an interface. Did you actually try this out before commenting? Guessing not. And how often are you naming functions the exact same thing across two different classes without using an interface? And if you were using an interface intellisense would work the exact same way, giving you the option to jump to any of the implementations.
I'm sorry, but you clearly haven't thought this out, or you're really quite ignorant as to how intellisense works in all languages (including Ruby, and including statically typed languages).
I skimmed it. It appears to visit the AST of the code and format that, as any formatter does. ASTs have not been type checked.
Can you give an example?
Precisely! It doesn't know the answer so it has to guess, or make you guess.
You mean how often does the same field name come up more than once? All the time obviously! Think about common names like
id,size,begin,children, etc. etc.I'm sorry but you clearly haven't thought this through, or you're just happy to ignore the limitations of Ruby. I suspect the latter. Please don't pretend they aren't limitations though. It's ok to say "yes this isn't very good but I like Ruby anyway".