5 ms·

> (+ 1 2 '(1 2)) > "3(1 2)" Yup, I'm out.

bunderbunder 2y ago
Fair. I don't mind dynamic typing so much, but I agree that getting clever with automatic type conversion is just plain wat. (reference to: https://www.destroyallsoftware.com/talks/wat https://www.destroyallsoftware.com/talks/wat)
- systems 2y ago
  I wouldnt call that getting clever, its just a string of what you did > (type (+ 1 2 '(1 2))) #object[String]
  - bunderbunder 2y ago
    The problem is how you get there. 1 and 2 are integers. '(1 2) is a list. None of them are strings, but + helpfully converts them to strings because ClojureScript is leaking some of JavaScript's wat behavior.
ARandomerDude 2y ago
That's because this is actually ClojureScript (JS under the hood) running as a browser library. If you try that in Clojure, you'll get: > ClassCastException class clojure.lang.PersistentList cannot be cast to class java.lang.Number If you try it in a "proper" ClojureScript dev environment (shadow-cljs), you get nil as a result with this warning: > cljs.core/+, all arguments must be numbers, got [number cljs.core/IList] instead
- parhamn 2y ago
  Thats actually good to know, I thought this was reflective of Clojure itself.
  - yladiz 2y ago
    In a way it is, since Clojure typically both compiles but doesn’t really hide its connection to either Java or JS, so you can’t ignore the underlying target language.
gleenn 2y ago
That has more to do with Javascript being weird than Clojurescript. That would almost certainly throw a good exception when using Clojure / Java.
deleted 2y ago
[deleted]
monsieurbanana 2y ago
Clojurescript compiles to Javascript and so inherits some of it's idiosyncrasies. This is one of the real problems of clojure: you need some knowledge of the host language. It's also one of it's major strengths, and the only reason a lisp managed to get so much (relative) commercial traction.
TacticalCoder 2y ago
That's JavaScript for you. Here's a talk about the (in)sanity of JS: https://youtu.be/et8xNAc2ic8 https://youtu.be/et8xNAc2ic8 The same under Clojure (on top of the JVM) shall throw a class cast exception.
- latexr 2y ago
  And the classic “Wat”. https://www.destroyallsoftware.com/talks/wat https://www.destroyallsoftware.com/talks/wat

Fair. I don't mind dynamic typing so much, but I agree that getting clever with automatic type conversion is just plain wat. (reference to: https://www.destroyallsoftware.com/talks/wat https://www.destroyallsoftware.com/talks/wat)

systems 2y ago
I wouldnt call that getting clever, its just a string of what you did > (type (+ 1 2 '(1 2))) #object[String]
- bunderbunder 2y ago
  The problem is how you get there. 1 and 2 are integers. '(1 2) is a list. None of them are strings, but + helpfully converts them to strings because ClojureScript is leaking some of JavaScript's wat behavior.

ARandomerDude 2y ago

That's because this is actually ClojureScript (JS under the hood) running as a browser library. If you try that in Clojure, you'll get: > ClassCastException class clojure.lang.PersistentList cannot be cast to class java.lang.Number If you try it in a "proper" ClojureScript dev environment (shadow-cljs), you get nil as a result with this warning: > cljs.core/+, all arguments must be numbers, got [number cljs.core/IList] instead

parhamn 2y ago
Thats actually good to know, I thought this was reflective of Clojure itself.
- yladiz 2y ago
  In a way it is, since Clojure typically both compiles but doesn’t really hide its connection to either Java or JS, so you can’t ignore the underlying target language.

gleenn 2y ago

That has more to do with Javascript being weird than Clojurescript. That would almost certainly throw a good exception when using Clojure / Java.

deleted 2y ago

[deleted]

monsieurbanana 2y ago

Clojurescript compiles to Javascript and so inherits some of it's idiosyncrasies. This is one of the real problems of clojure: you need some knowledge of the host language. It's also one of it's major strengths, and the only reason a lisp managed to get so much (relative) commercial traction.

TacticalCoder 2y ago

That's JavaScript for you. Here's a talk about the (in)sanity of JS: https://youtu.be/et8xNAc2ic8 https://youtu.be/et8xNAc2ic8 The same under Clojure (on top of the JVM) shall throw a class cast exception.

latexr 2y ago
And the classic “Wat”. https://www.destroyallsoftware.com/talks/wat https://www.destroyallsoftware.com/talks/wat