[Le #146] Functions as args to a class cast Exception

[stanislowskij]

⚠️ Imported from legacy repository. This issue is a duplicate of Clojure-Intro-Course/babel-legacy#146.

We can actually try to get the function name out of it.

babel.middleware=> (neg? neg?)
Expected a number, but a function was given instead.

In Clojure interactive session on line 1.
Call sequence:
[isNeg (ns:clojure.lang.Numbers) called in file Numbers.java on line 125]
[Clojure interactive session (repl)]

The function name is actually in the error:

 :cause "clojure.core$neg_QMARK_ cannot be cast to java.lang.Number"