Crystal lang : method_missing for class object?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP



Crystal lang : method_missing for class object?



Something like this?


class A
module ClassMethods
macro method_missing(call)
% p call %
end
end
extend ClassMethods
end
A.a



Result of the code is Error : undefined method 'a' for A:Class. It seems method_missing doesn't work for class object.


Error : undefined method 'a' for A:Class


method_missing



The reason for the question is that I implemented a class with a current class method to get an instance for current context. For the simplification, I want some like forward_missing_to to replace MyClass.current.xxx with MyClass.xxx, so method_missing is required according forward_missing_to's implementation.


current


forward_missing_to


MyClass.current.xxx


MyClass.xxx


method_missing


forward_missing_to



I also found, delegate works fine for class methods using above way. So actually my pratical problem has been solved, but I'm still interesting with the question : method_missing for class object, is it impossible?


delegate


method_missing





There's no way to do this right now. Also, method_missing is discouraged and I can imagine it being removed in the future.
– asterite
Aug 13 at 18:27


method_missing









By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service, privacy policy and cookie policy, and that your continued use of the website is subject to these policies.

Popular posts from this blog

Firebase Auth - with Email and Password - Check user already registered

Dynamically update html content plain JS

Creating a leaderboard in HTML/JS