Modify def_callback
code to be easier to understand
#364
+29
−20
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I had a bit of trouble following how this code actually works.
I find the argument names to be unfortunatly named. When I see signature/arity, I think of methods. But it actually refers to the structure of child nodes here.
There also was the
arity_check
argument, which isn't necessary. Reusing the arity with a endless range makes it a bit simpler.